RoRo Ramp

medium 19 / 19 models (Inspector)

A RoRo ramp carries wheeled cargo on and off the ship under its own power, unlike a hatch cover that seals a hold from above. It doubles as a closing appliance against flooding when stowed, which puts it under a stricter watch than ordinary cargo access equipment.

What sets a RoRo ramp apart

Hatch covers seal a cargo hold and are rarely opened outside port; a RoRo ramp is a working piece of machinery cycled every port call, carrying the full weight of trucks, trailers and container handling equipment as they drive on and off. Stern ramps, quarter ramps and side ramps handle the connection to the quay or another vessel, while internal ramps move vehicles between decks once aboard. When closed and secured, the outer ramp also forms part of the ship's watertight or weathertight boundary, so a ramp fault is a stability and flooding concern, not just a cargo-handling inconvenience.

RoRo ramp arrangement — Side view of a shipboard RoRo ramp hinged at the hull opening and lowered onto the quay, showing the hinge, locking pins, weathertight coaming and the hydraulic lifting cylinder.

Main components

Ramp platform

A steel structure sized for the design axle loading, often reinforced along wheel-track lines where repeated point loads concentrate wear.

Hoisting and actuation

Hydraulic cylinders or wire hoists raise, lower and, on stern ramps, luff the platform to match varying quay heights and tidal range.

Hinges and locking devices

Heavy pintle hinges carry the ramp's weight and the cargo load transmitted through it; locking pins or cleats secure the ramp in the closed, watertight position.

Hydraulic power pack

Supplies pressure to the actuating cylinders, typically with a manual backup pump for operation during a power failure.

Selection and sizing

Load rating is set by the heaviest vehicle or unit expected to cross the ramp, expressed as axle load and total distributed load, not just gross vehicle weight. Ramp length and achievable angle must suit the quay heights and tidal range of the ship's regular ports; a ramp too short for the trade forces a steep, difficult crossing angle for wheeled cargo. Width is set by the widest vehicle class the ship is designed to carry, with clearance margin for driver error.

Regulations and class requirements

SOLAS Chapter II-1 sets special stability and structural requirements for RoRo vessels, recognizing the flooding risk a large open vehicle deck represents. Ramps that form part of the watertight or weathertight boundary are treated as closing appliances under class rules, with position indicators and alarms required on the bridge to confirm the ramp is fully closed and secured before departure. Structural and hydraulic system surveys follow class intervals tied to the ramp's role in the vessel's damage stability case.

Typical faults

Hydraulic cylinder seal leakage, causing slow ramp creep or loss of holding pressure when stopped mid-travel.
Hinge and pintle wear from repeated heavy cycling, introducing play that shows up as misalignment when closing.
Structural corrosion on the ramp plating and stiffeners, accelerated by seawater spray and vehicle traffic wearing through protective coating.
Locking mechanism failure or misalignment, the single fault most directly tied to flooding risk if the ramp cannot be confirmed fully secured.
Position indicator or alarm sensor faults, which can mask a genuine closure problem from the bridge.

What to look for in a supplier

Structural design verified against the vessel's actual axle loading and the ramp's role in the approved stability case.
Hydraulic components rated for continuous heavy-duty cycling, not a light industrial equivalent.
Class-approved design documentation for any ramp modification or renewal, since this affects the ship's damage stability certificate.
Spare parts availability for hinges, locking pins and hydraulic seals without a full system replacement.

Never accept a ramp position indicator reading without confirming the physical lock visually at least once per voyage cycle; a stuck sensor and a genuinely secured ramp look identical on the bridge panel.

Inspector Mode Show All 19 / 19 with inspector value

5 manufacturers · 19 models

MacGregor

MacGregor Internal Ramp

SWL 100-300t · Marine Equipment · hydraulic actuation

Type

internal_ramp

Operation

hydraulic

Common Failures & Inspection Points

Hydraulic system failure
Structural fatigue cracking
Locking mechanism wear

Service: Internal ramps connecting vehicle decks. Annual load test.

Spare Parts: Cargotec (MacGregor): Spare parts per manufacturer. Lead time: 3-8 weeks. Keep seals and valve inserts on board.

Strengths

High load capacity (up to 30‑40 t per lane) suitable for heavy vehicles
Compact internal installation saves valuable deck space
Integrated hydraulic locking mechanism ensures safe, repeatable positioning
Class‑approved design with proven service history on car carriers and ROPAX vessels
Ease of maintenance through standardized hydraulic components

Weaknesses

Hydraulic system adds complexity and requires regular leak checks and fluid management
Limited angle adjustment compared with some electric or manual ramps
Weight of the ramp structure can affect overall vessel stability if not accounted for in design
Potential wear on locking pins necessitates periodic replacement
Annual load testing required to maintain certification

Typical Vessels: Pure Car Carrier (PCC)RO‑POA Passenger Ferry (ROPAX)Offshore Supply Vessel with vehicle deckMilitary amphibious transport ship

Certifications: DNV GL class approvalABS class approvalIMO SOLAS RoRo compliance

Decision Guide: Choose if you need a high‑capacity, space‑efficient internal ramp with proven hydraulic reliability on RoRo vessels. Avoid if your operation prefers simpler manual or electric ramps, has limited maintenance resources for hydraulic systems, or requires extreme angle flexibility.

Use Cases: Installed on car carriers to move cars and trucks between lower and upper vehicle decks during port loading/unloading; used on ROPAX ferries to provide rapid internal deck access for passenger vehicles; fitted on offshore supply vessels to transfer equipment and light vehicles between cargo decks while at sea.

Datasheet

Stern Ramp Quarter Type

Axle load 50t · Cargo Hold Access · hydraulic folding stern ramp

Type

stern_quarter

Axle load tonnes

Width (m)

Actuation

hydraulic

Technical Specifications

Antriebssystem: Hydraulic cylinders or motors with slow to medium speed, integrated load-holding valves
Paneelbauart: Two to six panels per cargo hatch, double steel skins (folded covers) or single steel skins (rolling covers)
Dichtungssysteme: FlexSeal, Cat-Profile, C-Seal, Omega, Omega Lite or foam rubber with compression rods
Lagerpads: Fixpad, Flexipad, Lubripad or Unipad — weight transfer during ship movement
Hydraulik-Befüllung: Speziell für Seeeinsatz ausgelegt, integrierte Heiz-/Kühlanlage, Tank-Größe minimal zur Decklatzersparnis
Korrosionsschutz: Stainless steel piston rods or stainless steel sleeves, bronze ball bearings, lubrication nipples between seal rings

Product Lines

Side-Rolling (standard Panamax/Capesize)
Folding (Handysize/Handymax)
Piggy-Back (space-constrained decks)
Lift-On/Lift-Off (multi-purpose)
Single-Flap (compact design)
Stacking (weather decks)
Hydraulic-Pivoting (vertical stowage)

Common Failures & Inspection Points

Area: Rubber seals (gaskets) age/harden through ozone and UV or show wear signs
Check: Visual inspection for discoloration, cracks, deformation; tactile inspection of elasticity. Damaged sections (minimum 1 m length) must be replaced. Do not apply oil/grease products. Validate with ultrasonic leak detection test.
Area: Compression rods corrode, bend or show rough surfaces — compromises sealing and destroys rubber
Check: Surface inspection for corrosion and scratches. Check straightness with steel ruler. Damaged rods must be properly replaced/repaired and realigned (alignment critical for even compression).
Area: Hydraulic cylinder leaks, piston rods corroded or oil contamination reduces functionality
Check: Check oil level. Take oil samples and analyze quarterly for contamination. Oil change every 5 years; replace filter annually. Inspect piston rods for corrosion/scratches. For leaks inspect seal rings and cylinder block. Lubricate grease nipples between seal rings.
Area: Drainage system clogged or check valves not functioning — water backs up and causes rusting/water ingress into cargo hold
Check: Inspect drainage channels for blockage (visual, if necessary with wire probe). Test check valves opening/closing manually (ball should move freely, not be hardened). Inspect drainage holes in cargo hold corners. Clean or replace if fouled.
Area: Bearing pads (Bearing Pads: Fixpad, Flexipad, Lubripad, Unipad) worn — reduced height no longer compresses rubber correctly or increases wear
Check: Measure pad height against manufacturer specification. Wear of 4 mm or more destroys rubber seal. Damaged pads must be replaced with original spare parts of same size and material (involve specialists). Check movement between panel and cargo hold edge with pencil test.
Area: Leaks at compression/sealing joints undetectable or compression strength insufficient (flat or corroded steel surfaces)
Check: Perform ultrasonic tightness test: place ultrasonic generator in closed cargo hold, run sensor receiver outside around all joints. Signal strength shows compression quality. Additionally chalk test: rub compression rods with chalk, imprint shows uneven compression. Hose test in empty cargo holds (0.5 m/s, 12 mm nozzle, 1–1.5 m distance) as validation.

Typ-universelle Inspektions-/Wartungspunkte fuer Hatch Covers & Cargo Access (MacGregor + DNV/OSHA, 2026-06). Per-Modell-Specs NICHT auto-gefuellt.

Service: Grease hinge pins weekly; test lip mechanism before every port.

Spare Parts: MacGregor: spare parts per manufacturer. Lead time: 3–8 weeks. Keep seals and valve inserts on board.

Strengths

High axle load capacity of up to 50 tonnes per wheel pair
Compact footprint thanks to 2–6 panel folding design, suitable for limited deck space
Corrosion‑resistant components (stainless‑steel rods, bronze bearings) designed for sea service
Integrated heating/cooling in the hydraulic circuit prevents fluid thickening in cold water
Multiple seal options (FlexSeal, Cat‑Profile, Omega, etc.) allow tailoring to environmental exposure

Weaknesses

Complex hydraulic system requires regular oil analysis, filter changes and greasing of hinge pins
Numerous moving parts increase inspection workload and potential for leaks or seal degradation
Maximum opening width (≈12 m) may be insufficient for very wide cargoes compared with side‑rolling ramps
Weight of the structure can affect vessel stability when fully deployed
Seal materials are susceptible to ozone/UV ageing; frequent gasket inspections are mandatory

Typical Vessels: RoRo Car CarrierHeavy‑Lift RoRo VesselOffshore Supply Vessel with cargo deckFerry / Passenger vessel with vehicle decksCruise ship provisioning ramp

Certifications: DNVIMO SOLAS

Decision Guide: Choose if you need a high‑load, space‑efficient stern access solution on vessels where deck height varies and hydraulic power is available. Avoid if budget for maintenance is limited, the required opening width exceeds ~12 m, or a simpler, low‑maintenance mechanical ramp would suffice.

Use Cases: The quarter‑type ramp is commonly installed on car carriers to load vehicles via the stern, on heavy‑lift RoRo ships to handle oversized machinery, and on offshore supply vessels where flexible, weather‑protected cargo access is required. It also serves cruise liners for provisioning and ferries that need rapid vehicle turnaround.

Manufacturer Datasheet

Datasheet

Stern Ramp Straight Type

Axle load 60t · Cargo Hold Access · hydraulic actuation

Type

stern_straight

Axle load tonnes

Width (m)

Technical Specifications

Antriebssystem: Hydraulic cylinders or motors with slow to medium speed, integrated load-holding valves
Paneelbauart: Two to six panels per cargo hatch, double steel skins (folded covers) or single steel skins (rolling covers)
Dichtungssysteme: FlexSeal, Cat-Profile, C-Seal, Omega, Omega Lite or foam rubber with compression rods
Lagerpads: Fixpad, Flexipad, Lubripad or Unipad — weight transfer during ship movement
Hydraulik-Befüllung: Speziell für Seeeinsatz ausgelegt, integrierte Heiz-/Kühlanlage, Tank-Größe minimal zur Decklatzersparnis
Korrosionsschutz: Stainless steel piston rods or stainless steel sleeves, bronze ball bearings, lubrication nipples between seal rings

Product Lines

Side-Rolling (standard Panamax/Capesize)
Folding (Handysize/Handymax)
Piggy-Back (space-constrained decks)
Lift-On/Lift-Off (multi-purpose)
Single-Flap (compact design)
Stacking (weather decks)
Hydraulic-Pivoting (vertical stowage)

Common Failures & Inspection Points

Area: Rubber seals (gaskets) age/harden through ozone and UV or show wear signs
Check: Visual inspection for discoloration, cracks, deformation; tactile inspection of elasticity. Damaged sections (minimum 1 m length) must be replaced. Do not apply oil/grease products. Validate with ultrasonic leak detection test.
Area: Compression rods corrode, bend or show rough surfaces — compromises sealing and destroys rubber
Check: Surface inspection for corrosion and scratches. Check straightness with steel ruler. Damaged rods must be properly replaced/repaired and realigned (alignment critical for even compression).
Area: Hydraulic cylinder leaks, piston rods corroded or oil contamination reduces functionality
Check: Check oil level. Take oil samples and analyze quarterly for contamination. Oil change every 5 years; replace filter annually. Inspect piston rods for corrosion/scratches. For leaks inspect seal rings and cylinder block. Lubricate grease nipples between seal rings.
Area: Drainage system clogged or check valves not functioning — water backs up and causes rusting/water ingress into cargo hold
Check: Inspect drainage channels for blockage (visual, if necessary with wire probe). Test check valves opening/closing manually (ball should move freely, not be hardened). Inspect drainage holes in cargo hold corners. Clean or replace if fouled.
Area: Bearing pads (Bearing Pads: Fixpad, Flexipad, Lubripad, Unipad) worn — reduced height no longer compresses rubber correctly or increases wear
Check: Measure pad height against manufacturer specification. Wear of 4 mm or more destroys rubber seal. Damaged pads must be replaced with original spare parts of same size and material (involve specialists). Check movement between panel and cargo hold edge with pencil test.
Area: Leaks at compression/sealing joints undetectable or compression strength insufficient (flat or corroded steel surfaces)
Check: Perform ultrasonic tightness test: place ultrasonic generator in closed cargo hold, run sensor receiver outside around all joints. Signal strength shows compression quality. Additionally chalk test: rub compression rods with chalk, imprint shows uneven compression. Hose test in empty cargo holds (0.5 m/s, 12 mm nozzle, 1–1.5 m distance) as validation.

Typ-universelle Inspektions-/Wartungspunkte fuer Hatch Covers & Cargo Access (MacGregor + DNV/OSHA, 2026-06). Per-Modell-Specs NICHT auto-gefuellt.

Service: NDT ramp panels at dry-dock; ensure tidal compensation works in all conditions.

Spare Parts: MacGregor: spare parts per manufacturer. Lead time: 3–8 weeks. Keep seals and valve inserts on board.

Strengths

High axle‑load rating (60 t) suitable for heavy vehicles and machinery
Wide 15 m opening maximises cargo throughput on large RoRo ships
Modular panel layout (2–6 panels) allows flexible installation and easy replacement
Robust corrosion protection – stainless‑steel rods, bronze bearings and optional heated hydraulic circuits for sea‑water service
Multiple sealing options (FlexSeal, Cat‑Profile, Omega etc.) to meet diverse weather‑deck requirements

Weaknesses

Complex seal maintenance – gaskets prone to ozone/UV hardening and require frequent inspection
Hydraulic system needs regular oil analysis and periodic filter changes; leaks can impair operation
Compression struts and bearing pads wear and must be monitored for corrosion and height loss
Drainage channels can become blocked, leading to water accumulation if not cleaned regularly
Weight of the ramp assembly may limit retrofit on vessels with low deck‑strength margins

Typical Vessels: Pure Car Carrier (PCC)RoRo ferryHeavy‑lift RoRo vesselContainer‑ship with RoRo decksOffshore supply vessel with cargo deck

Certifications: SOLASDNV

Decision Guide: Choose if you need a high‑capacity, wide‑opening stern ramp for heavy vehicles and want modular panels with proven corrosion‑resistant hardware. Avoid if your operation cannot support the regular hydraulic‑system maintenance or if vessel weight limits preclude a large steel ramp assembly.

Use Cases: Installed on Panamax/Capesize RoRo carriers to load cars, trucks, trailers and oversized cargo in ports with significant tidal ranges; also used on offshore supply ships where rapid, weather‑tight deck access is required.

Manufacturer Datasheet

Datasheet

Side Ramp SR-40

Axle load 40t · Cargo Hold Access · hydraulic side-loading ramp

Type

side_ramp

Axle load tonnes

Technical Specifications

Antriebssystem: Hydraulic cylinders or motors with slow to medium speed, integrated load-holding valves
Paneelbauart: Two to six panels per cargo hatch, double steel skins (folded covers) or single steel skins (rolling covers)
Dichtungssysteme: FlexSeal, Cat-Profile, C-Seal, Omega, Omega Lite or foam rubber with compression rods
Lagerpads: Fixpad, Flexipad, Lubripad or Unipad — weight transfer during ship movement
Hydraulik-Befüllung: Speziell für Seeeinsatz ausgelegt, integrierte Heiz-/Kühlanlage, Tank-Größe minimal zur Decklatzersparnis
Korrosionsschutz: Stainless steel piston rods or stainless steel sleeves, bronze ball bearings, lubrication nipples between seal rings

Product Lines

Side-Rolling (standard Panamax/Capesize)
Folding (Handysize/Handymax)
Piggy-Back (space-constrained decks)
Lift-On/Lift-Off (multi-purpose)
Single-Flap (compact design)
Stacking (weather decks)
Hydraulic-Pivoting (vertical stowage)

Common Failures & Inspection Points

Area: Rubber seals (gaskets) age/harden through ozone and UV or show wear signs
Check: Visual inspection for discoloration, cracks, deformation; tactile inspection of elasticity. Damaged sections (minimum 1 m length) must be replaced. Do not apply oil/grease products. Validate with ultrasonic leak detection test.
Area: Compression rods corrode, bend or show rough surfaces — compromises sealing and destroys rubber
Check: Surface inspection for corrosion and scratches. Check straightness with steel ruler. Damaged rods must be properly replaced/repaired and realigned (alignment critical for even compression).
Area: Hydraulic cylinder leaks, piston rods corroded or oil contamination reduces functionality
Check: Check oil level. Take oil samples and analyze quarterly for contamination. Oil change every 5 years; replace filter annually. Inspect piston rods for corrosion/scratches. For leaks inspect seal rings and cylinder block. Lubricate grease nipples between seal rings.
Area: Drainage system clogged or check valves not functioning — water backs up and causes rusting/water ingress into cargo hold
Check: Inspect drainage channels for blockage (visual, if necessary with wire probe). Test check valves opening/closing manually (ball should move freely, not be hardened). Inspect drainage holes in cargo hold corners. Clean or replace if fouled.
Area: Bearing pads (Bearing Pads: Fixpad, Flexipad, Lubripad, Unipad) worn — reduced height no longer compresses rubber correctly or increases wear
Check: Measure pad height against manufacturer specification. Wear of 4 mm or more destroys rubber seal. Damaged pads must be replaced with original spare parts of same size and material (involve specialists). Check movement between panel and cargo hold edge with pencil test.
Area: Leaks at compression/sealing joints undetectable or compression strength insufficient (flat or corroded steel surfaces)
Check: Perform ultrasonic tightness test: place ultrasonic generator in closed cargo hold, run sensor receiver outside around all joints. Signal strength shows compression quality. Additionally chalk test: rub compression rods with chalk, imprint shows uneven compression. Hose test in empty cargo holds (0.5 m/s, 12 mm nozzle, 1–1.5 m distance) as validation.

Typ-universelle Inspektions-/Wartungspunkte fuer Hatch Covers & Cargo Access (MacGregor + DNV/OSHA, 2026-06). Per-Modell-Specs NICHT auto-gefuellt.

Service: Inspect support wires monthly; train crew on shore interface procedures.

Spare Parts: MacGregor: spare parts per manufacturer. Lead time: 3–8 weeks. Keep seals and valve inserts on board.

Strengths

High axle load capacity (40 t) suitable for heavy machinery and containers
Modular panel design (2–6 panels) allows flexible deck integration and space saving
Multiple sealing options (FlexSeal, Cat‑Profile, Omega, etc.) provide excellent watertight integrity
Corrosion‑resistant components (stainless steel rods, bronze bearings) extend service life in marine environments
Hydraulic system equipped with heating/cooling and low‑profile tanks for reliable operation at sea

Weaknesses

Complex hydraulic maintenance – requires regular oil analysis, filter changes and cylinder inspections
Sealing elements (gaskets, compression rods) are prone to ageing from UV/ozone and need frequent visual checks
Drainage and non‑return valves can become clogged, risking water ingress if not inspected periodically
Higher initial capital cost compared with simpler fixed‑flap or manual ramps

Typical Vessels: RoRo / Car CarrierHeavy‑Lift VesselContainer Ship with side‑loading capabilityBulk Carrier (unitised cargo)Offshore Supply Vessel

Certifications: SOLAS Reg II-1DNV

Decision Guide: Choose if the vessel requires high‑capacity side loading of heavy or oversized cargo, has sufficient hydraulic power and can accommodate regular maintenance of seals and hydraulics. Avoid if deck space is extremely limited, the ship lacks a dedicated hydraulic system, or operational budgets cannot support the higher upkeep demands.

Use Cases: The SR-40 is typically installed on vessels that load trucks, construction equipment, large containers or modular units from the side in ports lacking heavy‑lift cranes. It enables rapid turn‑around for car carriers, offshore platform supply ships and bulk carriers handling unitised cargo where side access reduces reliance on deck‑mounted gantry cranes.

Manufacturer Datasheet

Datasheet

Internal Ramp IR-80

Axle load 80t · Cargo Hold Access · hydraulic hoistable internal ramp

Type

internal_hoistable

Axle load tonnes

Technical Specifications

Antriebssystem: Hydraulic cylinders or motors with slow to medium speed, integrated load-holding valves
Paneelbauart: Two to six panels per cargo hatch, double steel skins (folded covers) or single steel skins (rolling covers)
Dichtungssysteme: FlexSeal, Cat-Profile, C-Seal, Omega, Omega Lite or foam rubber with compression rods
Lagerpads: Fixpad, Flexipad, Lubripad or Unipad — weight transfer during ship movement
Hydraulik-Befüllung: Speziell für Seeeinsatz ausgelegt, integrierte Heiz-/Kühlanlage, Tank-Größe minimal zur Decklatzersparnis
Korrosionsschutz: Stainless steel piston rods or stainless steel sleeves, bronze ball bearings, lubrication nipples between seal rings

Product Lines

Side-Rolling (standard Panamax/Capesize)
Folding (Handysize/Handymax)
Piggy-Back (space-constrained decks)
Lift-On/Lift-Off (multi-purpose)
Single-Flap (compact design)
Stacking (weather decks)
Hydraulic-Pivoting (vertical stowage)

Common Failures & Inspection Points

Area: Rubber seals (gaskets) age/harden through ozone and UV or show wear signs
Check: Visual inspection for discoloration, cracks, deformation; tactile inspection of elasticity. Damaged sections (minimum 1 m length) must be replaced. Do not apply oil/grease products. Validate with ultrasonic leak detection test.
Area: Compression rods corrode, bend or show rough surfaces — compromises sealing and destroys rubber
Check: Surface inspection for corrosion and scratches. Check straightness with steel ruler. Damaged rods must be properly replaced/repaired and realigned (alignment critical for even compression).
Area: Hydraulic cylinder leaks, piston rods corroded or oil contamination reduces functionality
Check: Check oil level. Take oil samples and analyze quarterly for contamination. Oil change every 5 years; replace filter annually. Inspect piston rods for corrosion/scratches. For leaks inspect seal rings and cylinder block. Lubricate grease nipples between seal rings.
Area: Drainage system clogged or check valves not functioning — water backs up and causes rusting/water ingress into cargo hold
Check: Inspect drainage channels for blockage (visual, if necessary with wire probe). Test check valves opening/closing manually (ball should move freely, not be hardened). Inspect drainage holes in cargo hold corners. Clean or replace if fouled.
Area: Bearing pads (Bearing Pads: Fixpad, Flexipad, Lubripad, Unipad) worn — reduced height no longer compresses rubber correctly or increases wear
Check: Measure pad height against manufacturer specification. Wear of 4 mm or more destroys rubber seal. Damaged pads must be replaced with original spare parts of same size and material (involve specialists). Check movement between panel and cargo hold edge with pencil test.
Area: Leaks at compression/sealing joints undetectable or compression strength insufficient (flat or corroded steel surfaces)
Check: Perform ultrasonic tightness test: place ultrasonic generator in closed cargo hold, run sensor receiver outside around all joints. Signal strength shows compression quality. Additionally chalk test: rub compression rods with chalk, imprint shows uneven compression. Hose test in empty cargo holds (0.5 m/s, 12 mm nozzle, 1–1.5 m distance) as validation.

Typ-universelle Inspektions-/Wartungspunkte fuer Hatch Covers & Cargo Access (MacGregor + DNV/OSHA, 2026-06). Per-Modell-Specs NICHT auto-gefuellt.

Service: Inspect hoisting wires monthly; test locking devices before every voyage.

Spare Parts: MacGregor: spare parts per manufacturer. Lead time: 3–8 weeks. Keep seals and valve inserts on board.

Strengths

High axle‑load capacity (80 t) for heavy wheeled cargo
Compact internal stowage frees deck space when retracted
Modular panel options (2–6 panels, folded or rolling) adapt to various hatch sizes
Corrosion‑protected hydraulic cylinders and stainless‑steel components extend service life in marine environments
Fast operation with hydraulic drive and optional heating/cooling for cold climates

Weaknesses

Complex hydraulic system requires regular oil analysis and filter changes
Gasket and compression‑rod wear are critical maintenance items, especially in high UV/ozone exposure zones
Internal volume occupied by the ramp reduces usable cargo space compared with external ramps
Initial procurement cost is higher than simple manual or external roll‑on ramps
Weight of the system (≈ 10–12 t) adds to vessel deadweight and may affect stability calculations

Typical Vessels: RoRo ferriesCar carriersHeavy‑lift RoRo vesselsMulti‑purpose cargo ships with internal hatch access

Certifications: DNV class approvalIMO SOLAS compliance

Decision Guide: Choose if you need a high‑capacity (≤ 80 t) internal ramp that can be stowed below deck, require rapid hydraulic operation, and operate in harsh weather with corrosion protection. Avoid if budget constraints limit maintenance of hydraulic systems, or if the vessel design favours external ramps to maximise cargo volume.

Use Cases: The IR‑80 is typically installed on RoRo vessels transporting cars, trucks, trailers and heavy industrial plant where internal hatch access protects cargo from the elements and maximises deck utilisation. It is also used on multi‑purpose ships that need a flexible, high‑load ramp without sacrificing external deck space.

Manufacturer Datasheet

Datasheet

MacGregor Stern Ramp R-Type

SWL 150-500t · Marine Equipment · hydraulic stern ramp

Type

stern_ramp

Operation

hydraulic

Common Failures & Inspection Points

Hydraulic cylinder seal leak
Hinge pin wear
Ramp flap mechanism failure
Hydraulic power pack overheating

Service: Annual hydraulic system inspection. Hinge pin NDT at drydock.

Spare Parts: MacGregor: spare parts per manufacturer. Lead time: 3–8 weeks. Keep seals and valve inserts on board.

Strengths

High load capacity suitable for heavy vehicle cargo
Fast deployment and retraction via hydraulic actuation
Modular design allows retrofit on existing vessels
MacGregor’s proven engineering reputation and widespread support network
Easy access to hydraulic components for routine maintenance

Weaknesses

Hydraulic cylinder seals are prone to leakage if not inspected regularly
Hinge pins can experience wear, requiring NDT at dry‑dock intervals
Power pack may overheat in high ambient temperature or continuous operation
Requires dedicated hydraulic power source and associated piping
Weight of the system is higher than some newer electric‑actuated alternatives

Typical Vessels: RoRo Cargo ShipCar CarrierFerryOffshore Supply Vessel

Decision Guide: Choose if: you need a robust, high‑capacity stern ramp with proven hydraulic reliability and the vessel already has or can accommodate a hydraulic system. Avoid if: maintenance resources are limited, weight savings are critical, or an electric/servo actuation solution is preferred for energy efficiency.

Use Cases: Commonly installed on new builds and retrofits of vehicle carriers, ferries and offshore supply vessels to enable rapid roll‑on/roll‑off operations in ports with limited shore infrastructure. The ramp’s hydraulic system is favored where quick cycle times and high load ratings are essential.

Datasheet

MacGregor Side Door/Ramp

SWL variable · Marine Equipment · hydraulic side door ramp

Type

side_door

Operation

hydraulic

Common Failures & Inspection Points

Door seal leakage
Hydraulic actuator failure
Hinge bearing wear

Service: Weather-tight seal critical. Test before each voyage.

Spare Parts: MacGregor: spare parts per manufacturer. Lead time: 3–8 weeks. Keep seals and valve inserts on board.

Strengths

Weather‑tight seal designed for harsh sea conditions
Hydraulic actuation enables rapid opening/closing with minimal crew effort
Side mounting saves valuable bow space and allows flexible vehicle flow
Modular design facilitates retrofit on existing vessels
Integrated hinge bearing system reduces deck intrusion when open

Weaknesses

Seal leakage can occur if regular testing is neglected
Hydraulic system adds complexity and requires periodic maintenance
Hinge bearings are subject to wear and may need replacement after high‑cycle use
Opening width is limited compared to full bow doors, restricting oversized cargo
Initial procurement cost higher than simple manual ramps

Typical Vessels: Pure Car Carrier (PCC)RoRo Container ShipPassenger/Vehicle FerryOffshore Supply Vessel with vehicle deckMilitary roll‑on/roll‑off transport ship

Decision Guide: Choose if: you need a side‑entry solution that maintains watertight integrity, rapid hydraulic operation, and space‑saving deck layout. Avoid if: your vessel operates in low‑maintenance environments, budget constraints preclude hydraulic systems, or you require the widest possible opening for oversized cargo.

Use Cases: Commonly installed on car carriers and RoRo ferries to load/unload cars, trucks, and heavy equipment through a side hatch while at berth or offshore. Also used on offshore supply vessels where deck space is limited and a weather‑tight seal is essential during rough seas.

Datasheet

Stern Ramp / Quarter Ramp

30-200 t axle load · Vehicles / Rolling Cargo

Type

Stern Ramp / Quarter Ramp (Hydraulic)

Size Range

Stern Ramp
Quarter Ramp
Slewing Ramp

Power range (kW)

Drive Type

Hydraulic

Construction

Heavy steel structure, hydraulic cylinders, hinge system

Technical Specifications

Antriebssystem: Hydraulic cylinders or motors with slow to medium speed, integrated load-holding valves
Paneelbauart: Two to six panels per cargo hatch, double steel skins (folded covers) or single steel skins (rolling covers)
Dichtungssysteme: FlexSeal, Cat-Profile, C-Seal, Omega, Omega Lite or foam rubber with compression rods
Lagerpads: Fixpad, Flexipad, Lubripad or Unipad — weight transfer during ship movement
Hydraulik-Befüllung: Speziell für Seeeinsatz ausgelegt, integrierte Heiz-/Kühlanlage, Tank-Größe minimal zur Decklatzersparnis
Korrosionsschutz: Stainless steel piston rods or stainless steel sleeves, bronze ball bearings, lubrication nipples between seal rings

Product Lines

Side-Rolling (standard Panamax/Capesize)
Folding (Handysize/Handymax)
Piggy-Back (space-constrained decks)
Lift-On/Lift-Off (multi-purpose)
Single-Flap (compact design)
Stacking (weather decks)
Hydraulic-Pivoting (vertical stowage)

Common Failures & Inspection Points

Area: Rubber seals (gaskets) age/harden through ozone and UV or show wear signs
Check: Visual inspection for discoloration, cracks, deformation; tactile inspection of elasticity. Damaged sections (minimum 1 m length) must be replaced. Do not apply oil/grease products. Validate with ultrasonic leak detection test.
Area: Compression rods corrode, bend or show rough surfaces — compromises sealing and destroys rubber
Check: Surface inspection for corrosion and scratches. Check straightness with steel ruler. Damaged rods must be properly replaced/repaired and realigned (alignment critical for even compression).
Area: Hydraulic cylinder leaks, piston rods corroded or oil contamination reduces functionality
Check: Check oil level. Take oil samples and analyze quarterly for contamination. Oil change every 5 years; replace filter annually. Inspect piston rods for corrosion/scratches. For leaks inspect seal rings and cylinder block. Lubricate grease nipples between seal rings.
Area: Drainage system clogged or check valves not functioning — water backs up and causes rusting/water ingress into cargo hold
Check: Inspect drainage channels for blockage (visual, if necessary with wire probe). Test check valves opening/closing manually (ball should move freely, not be hardened). Inspect drainage holes in cargo hold corners. Clean or replace if fouled.
Area: Bearing pads (Bearing Pads: Fixpad, Flexipad, Lubripad, Unipad) worn — reduced height no longer compresses rubber correctly or increases wear
Check: Measure pad height against manufacturer specification. Wear of 4 mm or more destroys rubber seal. Damaged pads must be replaced with original spare parts of same size and material (involve specialists). Check movement between panel and cargo hold edge with pencil test.
Area: Leaks at compression/sealing joints undetectable or compression strength insufficient (flat or corroded steel surfaces)
Check: Perform ultrasonic tightness test: place ultrasonic generator in closed cargo hold, run sensor receiver outside around all joints. Signal strength shows compression quality. Additionally chalk test: rub compression rods with chalk, imprint shows uneven compression. Hose test in empty cargo holds (0.5 m/s, 12 mm nozzle, 1–1.5 m distance) as validation.

Typ-universelle Inspektions-/Wartungspunkte fuer Hatch Covers & Cargo Access (MacGregor + DNV/OSHA, 2026-06). Per-Modell-Specs NICHT auto-gefuellt.

Service: Hydraulic system check before each port call. Hinge pin lubrication monthly. Ramp panel straightness check at drydock. Wire rope inspection per schedule. Complete structural NDT at 5-year survey.

Spare Parts: MacGregor/TTS/Cargotec. Lead time: 4-8 weeks. Hydraulic cylinders: 6-10 weeks.

Manufacturer Datasheet

Datasheet

Internal Ramp / Hoistable Ramp

20-100 t axle load · Vehicles / Rolling Cargo

Type

Internal Ramp / Hoistable Car Deck Ramp

Size Range

Fixed Internal Ramp
Hoistable Ramp

Power range (kW)

Drive Type

Hydraulic / Wire-Operated

Construction

Steel panel with hydraulic/wire hoist system

Technical Specifications

Antriebssystem: Hydraulic cylinders or motors with slow to medium speed, integrated load-holding valves
Paneelbauart: Two to six panels per cargo hatch, double steel skins (folded covers) or single steel skins (rolling covers)
Dichtungssysteme: FlexSeal, Cat-Profile, C-Seal, Omega, Omega Lite or foam rubber with compression rods
Lagerpads: Fixpad, Flexipad, Lubripad or Unipad — weight transfer during ship movement
Hydraulik-Befüllung: Speziell für Seeeinsatz ausgelegt, integrierte Heiz-/Kühlanlage, Tank-Größe minimal zur Decklatzersparnis
Korrosionsschutz: Stainless steel piston rods or stainless steel sleeves, bronze ball bearings, lubrication nipples between seal rings

Product Lines

Side-Rolling (standard Panamax/Capesize)
Folding (Handysize/Handymax)
Piggy-Back (space-constrained decks)
Lift-On/Lift-Off (multi-purpose)
Single-Flap (compact design)
Stacking (weather decks)
Hydraulic-Pivoting (vertical stowage)

Common Failures & Inspection Points

Area: Rubber seals (gaskets) age/harden through ozone and UV or show wear signs
Check: Visual inspection for discoloration, cracks, deformation; tactile inspection of elasticity. Damaged sections (minimum 1 m length) must be replaced. Do not apply oil/grease products. Validate with ultrasonic leak detection test.
Area: Compression rods corrode, bend or show rough surfaces — compromises sealing and destroys rubber
Check: Surface inspection for corrosion and scratches. Check straightness with steel ruler. Damaged rods must be properly replaced/repaired and realigned (alignment critical for even compression).
Area: Hydraulic cylinder leaks, piston rods corroded or oil contamination reduces functionality
Check: Check oil level. Take oil samples and analyze quarterly for contamination. Oil change every 5 years; replace filter annually. Inspect piston rods for corrosion/scratches. For leaks inspect seal rings and cylinder block. Lubricate grease nipples between seal rings.
Area: Drainage system clogged or check valves not functioning — water backs up and causes rusting/water ingress into cargo hold
Check: Inspect drainage channels for blockage (visual, if necessary with wire probe). Test check valves opening/closing manually (ball should move freely, not be hardened). Inspect drainage holes in cargo hold corners. Clean or replace if fouled.
Area: Bearing pads (Bearing Pads: Fixpad, Flexipad, Lubripad, Unipad) worn — reduced height no longer compresses rubber correctly or increases wear
Check: Measure pad height against manufacturer specification. Wear of 4 mm or more destroys rubber seal. Damaged pads must be replaced with original spare parts of same size and material (involve specialists). Check movement between panel and cargo hold edge with pencil test.
Area: Leaks at compression/sealing joints undetectable or compression strength insufficient (flat or corroded steel surfaces)
Check: Perform ultrasonic tightness test: place ultrasonic generator in closed cargo hold, run sensor receiver outside around all joints. Signal strength shows compression quality. Additionally chalk test: rub compression rods with chalk, imprint shows uneven compression. Hose test in empty cargo holds (0.5 m/s, 12 mm nozzle, 1–1.5 m distance) as validation.

Typ-universelle Inspektions-/Wartungspunkte fuer Hatch Covers & Cargo Access (MacGregor + DNV/OSHA, 2026-06). Per-Modell-Specs NICHT auto-gefuellt.

Service: Wire rope inspection before each voyage. Hydraulic system monthly. Alignment check at drydock.

Spare Parts: MacGregor/TTS. Lead time: 3-6 weeks.

Manufacturer Datasheet

Datasheet

Damen Marine

Damen RoRo Ramp Small 8m unverified

Size

Small 8m

Common Failures & Inspection Points

Wire-rope, chain, roller or line-contact wear caused by loaded movement, corrosion or poor lubrication, resulting in visible damage, rough operation or accelerated rope wear
Brake, locking or clutch deterioration caused by repeated loading or contamination, resulting in poor holding or excessive travel
Hydraulic or electric drive failure caused by leakage, motor faults or control problems, resulting in slow, weak or unavailable movement
Bearing, pin, hinge or structural wear caused by cyclic loading and corrosion, resulting in play, vibration, misalignment or abnormal noise
Limit, interlock or control-system fault caused by sensor, wiring or calibration problems, resulting in inhibited movement, alarms or loss of protective functions

Service: Inspect load-bearing structure, brakes, locks, ropes or chains, rollers or sheaves, pins, bearings, drives, controls and foundations as applicable. Lubricate specified points and inspect hydraulic hoses or electrical equipment according to drive type. Function-test local and remote controls, limit devices, emergency stops and interlocks using approved procedures. Examine high-load welds and line-contact areas for corrosion, cracking, deformation or sharp edges. Keep personnel clear of suspended loads and snap-back or pinch zones during tests. Refer to the manufacturer documentation for the exact figure for load tests, allowable wear, brake settings and inspection criteria.

Spare Parts: Keep brake or locking service parts, seals, bearings, hydraulic hose or valve consumables, control switches, sensors and manufacturer-recommended rope, roller or sheave wear parts. Heavy structural, gear and load-bearing components are normally strategic spares.

Use Cases: It is used for cargo-hold access and weather protection on merchant ships, passenger vessels, offshore units or other vessel types where this equipment category is fitted.

Datasheet

Damen RoRo Ramp Medium 12m unverified

Size

Medium 12m

Common Failures & Inspection Points

Wire-rope, chain, roller or line-contact wear caused by loaded movement, corrosion or poor lubrication, resulting in visible damage, rough operation or accelerated rope wear
Brake, locking or clutch deterioration caused by repeated loading or contamination, resulting in poor holding or excessive travel
Hydraulic or electric drive failure caused by leakage, motor faults or control problems, resulting in slow, weak or unavailable movement
Bearing, pin, hinge or structural wear caused by cyclic loading and corrosion, resulting in play, vibration, misalignment or abnormal noise
Limit, interlock or control-system fault caused by sensor, wiring or calibration problems, resulting in inhibited movement, alarms or loss of protective functions

Use Cases: It is used for cargo-hold access and weather protection on merchant ships, passenger vessels, offshore units or other vessel types where this equipment category is fitted.

Datasheet

Damen RoRo Ramp Large 16m unverified

Size

Large 16m

Common Failures & Inspection Points

Wire-rope, chain, roller or line-contact wear caused by loaded movement, corrosion or poor lubrication, resulting in visible damage, rough operation or accelerated rope wear
Brake, locking or clutch deterioration caused by repeated loading or contamination, resulting in poor holding or excessive travel
Hydraulic or electric drive failure caused by leakage, motor faults or control problems, resulting in slow, weak or unavailable movement
Bearing, pin, hinge or structural wear caused by cyclic loading and corrosion, resulting in play, vibration, misalignment or abnormal noise
Limit, interlock or control-system fault caused by sensor, wiring or calibration problems, resulting in inhibited movement, alarms or loss of protective functions

Use Cases: It is used for cargo-hold access and weather protection on merchant ships, passenger vessels, offshore units or other vessel types where this equipment category is fitted.

Datasheet

Damen RoRo Ramp XL 20m unverified

Size

XL 20m

Common Failures & Inspection Points

Hydraulic leakage or actuator failure caused by hose, cylinder, pump or valve faults, resulting in slow, uneven or unavailable movement
Hinge, roller, bearing or pin wear caused by cyclic loading and corrosion, resulting in play, noise or misalignment
Locking-device or interlock failure caused by wear, contamination or sensor faults, resulting in inability to secure the opening or persistent alarms
Seal deterioration caused by compression set, damage or contamination, resulting in water ingress or failure of the required closing condition
Structural cracking or deformation caused by impact, overload or fatigue, resulting in visible distortion or survey findings

Service: Inspect hinges, rollers, pins, bearings, hydraulic equipment, locking devices, seals, controls, foundations and high-load structural areas. Function-test limit switches, position indication, interlocks and emergency stopping arrangements with the operating area clear. Check hydraulic hoses and cylinders or electric drives according to the installed design. Examine structural welds for corrosion, cracking or impact damage. Verify all locks are fully engaged and the required closing indication is obtained before sea passage. Refer to the manufacturer documentation for the exact figure for inspection intervals, test loads, closing criteria and wear limits.

Spare Parts: Keep seals, hydraulic hoses or cylinder service parts where applicable, limit switches, sensors, locking-device consumables, rollers, bearings and manufacturer-recommended drive components. Critical structural and locking parts must match the approved system. Heavy panels and ramp assemblies are normally strategic spares.

Use Cases: Cargo-hold and vehicle-deck access on bulk carriers, container ships, RoRo ships, ferries and other vessels fitted with powered or movable cargo-access structures.

Datasheet

Damen RoRo Ramp XXL 25m unverified

Size

XXL 25m

Common Failures & Inspection Points

Hydraulic leakage or actuator failure caused by hose, cylinder, pump or valve faults, resulting in slow, uneven or unavailable movement
Hinge, roller, bearing or pin wear caused by cyclic loading and corrosion, resulting in play, noise or misalignment
Locking-device or interlock failure caused by wear, contamination or sensor faults, resulting in inability to secure the opening or persistent alarms
Seal deterioration caused by compression set, damage or contamination, resulting in water ingress or failure of the required closing condition
Structural cracking or deformation caused by impact, overload or fatigue, resulting in visible distortion or survey findings

Use Cases: Cargo-hold and vehicle-deck access on bulk carriers, container ships, RoRo ships, ferries and other vessels fitted with powered or movable cargo-access structures.

Datasheet

TTS Marine

TTS Linkspan

Axle load 60t · Cargo Hold Access · hydraulic tidal compensation

Type

linkspan

Axle load tonnes

Common Failures & Inspection Points

Hydraulic, chain, wire or electric-drive faults cause uneven movement, drift or inability to open or close
Hinge, wheel, rail or bearing wear causes misalignment, binding or abnormal noise
Locking-device or limit-switch faults cause incomplete secure indication or blocked operating sequence
Seal damage, compression loss or coaming corrosion causes water ingress
Structural cracking, corrosion or deformation causes poor fit and unsafe load transfer

Service: Inspect panels, coamings, hinges or rails, hydraulic or electric drive, locks, seals, drains, limit switches and structural welds. Verify closing, securing and indication before sailing. Review hose condition and structural inspection or test records. Refer to manufacturer and class documentation for the exact figure for operating pressures, loads, seal compression and wear limits.

Spare Parts: Carry hydraulic seals and hoses where applicable, lock and limit-switch parts, hinge or wheel service items, sealing sections, fuses and control relays.

Strengths

High axle‑load rating of 60 t enables handling of heavy trucks and equipment
Integrated hydraulic tide‑compensation allows operation over wide tidal ranges
Modular handrail and walkway design simplifies inspection and replacement
Proven TTS Marine build quality with a long service history in RoRo ports

Weaknesses

Tidal compensation cylinder can drift, requiring daily testing
Handrails are prone to damage and need weekly inspections
Flap hinges have reported corrosion issues in salt‑water environments
Maintenance intensity is higher than simpler fixed ramps

Typical Vessels: RoRo FerryPure Car Carrier (PCC)Roll‑on/Roll‑off Cargo ShipCruise ship with vehicle decks

Decision Guide: Choose if you need a high‑capacity (60 t) RoRo ramp, operate in ports with significant tidal variation, and can commit to daily tide‑compensation checks and weekly handrail inspections. Avoid if maintenance resources are limited or the operating environment accelerates corrosion of flap hinges.

Use Cases: Bulk carriers, general cargo ships, RoRo ferries and vehicle carriers.

Datasheet

TTS Stern Quarter Ramp

Axle load 45t · Cargo Hold Access · hydraulic actuation

Type

stern_quarter

Axle load tonnes

Common Failures & Inspection Points

Hydraulic, chain, wire or electric-drive faults cause uneven movement, drift or inability to open or close
Hinge, wheel, rail or bearing wear causes misalignment, binding or abnormal noise
Locking-device or limit-switch faults cause incomplete secure indication or blocked operating sequence
Seal damage, compression loss or coaming corrosion causes water ingress
Structural cracking, corrosion or deformation causes poor fit and unsafe load transfer

Spare Parts: Carry hydraulic seals and hoses where applicable, lock and limit-switch parts, hinge or wheel service items, sealing sections, fuses and control relays.

Strengths

High axle‑load capacity of 45 t enables handling of heavy vehicles and equipment.
Quarter‑stern location frees up mid‑ship hatch space for other cargo or structures.
Fast opening/closing via integrated hydraulic system reduces turnaround time.
Standardized door seal design allows scheduled replacement (every 3 years) to maintain watertight integrity.
Compact footprint suitable for vessels with limited stern clearance.

Weaknesses

Door seals are a known failure point and require regular replacement.
Hydraulic pump can overheat under prolonged or heavy use, demanding monitoring.
Steering mechanism wear may increase maintenance intervals.
Limited vertical clearance angle may restrict very tall cargo loads.
Requires dedicated hydraulic power supply and associated control hardware.

Typical Vessels: RoRo ferryCar carrierOffshore supply vesselContainer ship with RoRo capabilityHeavy‑equipment transport vessel

Decision Guide: Choose if the vessel needs a high‑load quarter‑stern ramp to maximise deck space and support frequent heavy‑vehicle RoRo operations. Avoid if low maintenance, minimal hydraulic infrastructure, or tall‑cargo clearance are higher priorities.

Use Cases: Bulk carriers, general cargo ships, RoRo ferries and vehicle carriers.

Datasheet

TTS Hoistable Car Deck

Deck load 3.5t per axle · Cargo Hold Access · hydraulic hoist system

Type

hoistable_car_deck

Axle load tonnes

3.5

Common Failures & Inspection Points

Hydraulic, chain, wire or electric-drive faults cause uneven movement, drift or inability to open or close
Hinge, wheel, rail or bearing wear causes misalignment, binding or abnormal noise
Locking-device or limit-switch faults cause incomplete secure indication or blocked operating sequence
Seal damage, compression loss or coaming corrosion causes water ingress
Structural cracking, corrosion or deformation causes poor fit and unsafe load transfer

Spare Parts: Carry hydraulic seals and hoses where applicable, lock and limit-switch parts, hinge or wheel service items, sealing sections, fuses and control relays.

Strengths

Adjustable deck height enables loading of different vehicle types without structural modifications
Relatively low axle load (3.5 t) reduces stress on hull and simplifies integration on medium‑size RoRo ships
Quick hoisting operation speeds up turnaround time in port
Standardized guide rails allow repeatable alignment for successive loads

Weaknesses

Hoisting chain elongation requires quarterly measurement and periodic replacement
Deck panels can warp under repeated loading, necessitating dry‑dock inspections
Guide rail wear may lead to misalignment if not regularly lubricated and inspected
Maximum axle load of 3.5 t limits use with heavy trucks or oversized cargo

Typical Vessels: RoRo FerryCar CarrierROPAX Passenger Ship

Decision Guide: Choose if the vessel needs flexible deck height for mixed vehicle traffic, operates on short‑sea routes with frequent loading cycles, and can accommodate regular maintenance of hoist components. Avoid if the primary cargo exceeds the 3.5 t axle limit, or if low‑maintenance equipment is a priority.

Use Cases: Bulk carriers, general cargo ships, RoRo ferries and vehicle carriers.

Datasheet

Hyundai Maritime / HHI (South Korea)

RoRo Ramp System

30-150 t axle load · Vehicles / Rolling Cargo

Type

Stern Ramp / Internal Ramp

Size Range

HHI Stern Ramp
HHI Internal Ramp

Power range (kW)

Drive Type

Hydraulic

Construction

Heavy steel, hydraulic cylinders

Common Failures & Inspection Points

Hydraulic cylinder seal issues
Structural fatigue from high-cycle loading
Hinge pin wear

Service: Standard RoRo ramp maintenance.

Spare Parts: Hyundai Maritime. Lead time: 4-8 weeks Korea.

Datasheet

Rapp Marine Group (Norway)

Passenger/Vehicle Ramp

10-50 t axle load · Vehicles / Passengers

Type

Bow/Stern Vehicle-Passenger Ramp

Size Range

Small Ferry Ramp
Medium Ferry Ramp

Power range (kW)

Drive Type

Hydraulic

Construction

Steel/aluminum, hydraulic cylinders

Common Failures & Inspection Points

Hydraulic cylinder seal leak
Hinge mechanism wear from tidal cycling
Non-skid surface deterioration
Sealing gasket failure

Service: Hydraulic system daily check during ferry operations. Hinge lubrication weekly. Non-skid surface renewal at drydock.

Spare Parts: Rapp Marine Bodø. Lead time: 3-6 weeks.

Datasheet