Uttern C66
Uttern C66 is a GRP planing cabin motorboat from UtternBåtar AB. It is designed for recreational coastal operation with a protected helm and cabin arrangement rather than the fully open layout of a small runabout. Different C66 examples were supplied with different propulsion and trim packages, so the exact engine, sterndrive and electrical configuration must be identified from the individual boat. The GRP hull reduces the general corrosion concerns associated with an aluminium hull, although metal fittings, drive components and fasteners still require normal marine corrosion control. If carried aboard a larger vessel, the C66 remains a recreational craft unless separately approved and equipped for workboat or rescue-boat service. Its RCD certification covers the recreational-craft design and should not be confused with SOLAS rescue-boat approval. Lifting points, added davit fittings or owner modifications therefore require separate verification if the boat is used as a ship's tender.
Inspector Detail
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Common issues
- Galvanic corrosion at fittings and through-hull penetrations typical of aluminium small craft
- Steering and control cable corrosion in the marine environment
- Bilge pump/battery system failures from lack of routine testing
- Wear at davit/launch-and-recovery mounting points if carried and used as a ship's tender
Inspection checklist
- Check the hull for corrosion, especially at fittings and through-hull penetrations
- Verify bilge pump and battery/charging system operation
- Check steering, throttle and control cable condition
- Confirm the RCD/CE compliance plate and buoyancy/capacity markings are legible
- If used as a ship's tender or workboat, check launch/recovery gear (davit, falls) condition
- Service the fitted propulsion engine per its own manufacturer's schedule - not covered by this hull-level entry
Service intervals
| Hull/fitting corrosion check | every 6-12 months, or per the operator's small-craft maintenance programme |
| Bilge pump/battery test | monthly if kept in active service |
Critical spares
- Sacrificial hull anodes (matched to the hull material)
- Bilge pump
- Battery
- Steering/control cable
- Propulsion engine spares per the fitted engine manufacturer's own parts kit
Safety
- Launch/recovery (if used as a ship's tender) is a personnel-injury risk - follow davit/crane SWL and drill procedures
- A petrol-outboard fuel system presents a fire/explosion risk from vapour accumulation in enclosed compartments
- Buoyancy and load capacity markings must not be exceeded
Class survey
This record is filed under 'Yacht & Boat Equipment (Quarantine)' with an RCD (EU Recreational Craft Directive) approval, indicating a leisure/small-craft product rather than SOLAS-classed shipboard machinery. If carried and used as a ship's tender or workboat, confirm its actual role and any class notation before applying lifeboat/rescue-boat-style survey requirements - it typically falls outside the main machinery survey scope unless separately required. Verified technical detail for this specific model is limited, so this entry is kept intentionally brief rather than filled with unconfirmed figures.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Service & Maintenance
Inspect the GRP hull, transom, deck, windows and fittings during haul-out and after any impact. Service the fitted engine and drive strictly to their own manufacturer schedules and inspect corrosion protection, bellows, steering and propeller condition as applicable to the installed propulsion. Test bilge pumping, batteries, navigation lights and basic safety equipment before operation. Retain the RCD identification and verify that modifications have not obscured capacity or compliance markings. If used from a parent vessel, inspect lifting and securing arrangements against the ship's approved drawings rather than assuming the recreational-craft fittings are suitable for hoisting.
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DNV type approval
Verified against the DNV Approval Finder — the certificate below is issued by DNV, not by us.
- Certificate
- RCD-B-389
- Approved as
- Recreational Craft
- Certificate holder
- UtternBåtar AB (Sweden)
- Valid until
- 2029-12-31