NOA 5.5t Off-Load

Common issues

• Hull gelcoat/GRP UV degradation and chalking from prolonged weather exposure
• On-load release hook mechanism stiffening or seizing from infrequent lubrication and servicing
• Engine starting failure on drills due to battery or fuel degradation between exercises
• Seat harness webbing wear and buckle corrosion
• Corrosion at the skid/ramp and free-fall release point
• Bilge pump failure found only at the next drill
• Hatch/canopy seal deterioration leading to water ingress

Inspection checklist

• Annual thorough examination per SOLAS III / LSA Code
• On-load release gear operational test, with the 5-yearly load test per manufacturer and class requirement
• Engine start and running test, including any water-spray protection system if fitted
• Structural inspection of the hull for cracks, delamination or impact damage
• Painter line and towing bridle condition check
• Seating, harnesses and internal fittings check against the inventory
• Internal/external lighting and equipment inventory check
• Free-fall release mechanism function test

Service intervals

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Critical spares

• On-load release hook mechanism spares (maker's kit)
• Engine starting battery
• Fuel filter / water separator element
• Hatch/canopy seal kit
• Painter line

Safety

• Release gear must never be function-tested with personnel inside unless it is a properly organised load test
• Free-fall ramp area must be kept clear/under exclusion during drills and testing
• Confirm ventilation before running the engine for checks in an enclosed boat
• Any doubt about hull structural integrity takes the boat out of service before a free-fall launch

Class survey

Freefall lifeboats fall under SOLAS III/20 and the LSA Code testing regime. Class attends the 5-yearly on-load release gear overhaul/load test and reviews the maker's service reports together with the drill and annual-examination log; a missing or overdue annual examination record is a common finding.