Cornish Crabbers Clam 21

Starting at
£37.950 GBP

A beautiful launch with graceful lines, the Clam 21 is the ideal boat for exploring rivers & inland waterways. With a cockpit spacious enough for 4 and room down below for comfortable weekends away.

Algemene informatie

Clam 21
Motorboot boot
Lengte - totaal
6,40 Meters
Lengte waterlijn
6,09 Meters
Lengte aan dek
6,40 Meters
2,40 Meters
0,57 Meters
1.400 kg


Yanmar 1GM10 9hp
38 liter

The interior layout is similar to that of the Shrimper 21 but with the absence of the centreboard case she feels like a much bigger boat – the saloon is airy with 2 single bunks, chart table and a cooker with double burner and grill. A separate ‘v’ berth forward cabin with under-bunk loo compartment makes her perfect for staying on board.

With her ballast keel the Clam 21 is incredibly stable and sturdy underfoot. Powered by twin cylinder 14hp Yanmar 2YM15 engine she has comfortable cruising at 6 knots and higher speeds when required.


Construction: Hand laid solid GRP hull with no foam core. Integral centreplate case laminated as part of the complete hull structure. Internal bunk and forepeak moulding bonded into hull with internal structural bulkheads bonded to both hull and deck mouldings. Standard colours are Off White, Dark Blue or Dark Green.

The hull and deck joint is by way of an overlap or ‘Biscuit Tin Lid’ with GRP bonding.

Rudder: The rudder is transom hung on two stainless steel hangings bolted through the transom with Hardwood backing pads. The rudder is constructed from laminated Plywood.

Engine Beds: Engine beds are incorporated in the GRP bunk moulding with mild steel mounts bonded into the bed design which incorporates an oil drip tray.

Ballast: Ballast is by way of Iron punchings encapsulated in resin inside the hull keel moulding

Boot Top: A single boot top moulded in gel coat located above antifouling level. Colour in contrast to main hull and normally

matching the deck.


Construction: Hand laid GRP with balsa core in way of horizontal load areas. Hard wood pads under deck fittings and stress points.

Cockpit : Cockpit locker lids are hand laid with Balsa core. There is integrated non slip on horizontal surfaces with an optional two tone colour. A cockpit drain is located in the centre of the main foot well with additional drainage from the seats. A central water tight locker offers general storage or houses the diesel engine.

Ports: 2 aluminium fixed ports are fitted one each in the hull topsides.

Vents: Ventilation is via a washboard vent and opening forward hatch.

Miscellaneous Deck Equipment:

Fuel filler & tank vent, Life harness attachment point by the companionway.

Cockpit Lockers: Two main watertight lockers with latches and padlocks are provided. A hast / staple with padlock is also

provided for the companionway hatch.


Stern Gear: A 1” stainless steel shaft is fitted, connected to the engine via a flexible coupling and fitted with a Tides Marine ‘lip seal’ gland. The shaft drives a fixed 2-bladed propeller.

Engine: Yanmar 1GM10 9hp marine diesel engine. A 55 amp (12V) alternator is fitted to the engine.

Engine Instruments and Controls: The engine instruments are located at the rear of the cockpit coaming and are recessed with a clear cover. Instruments include audible alarm, alternator warning light, start switch and stop control. A single lever engine control is supplied and fitted in the cockpit well.

Engine Cooling: The engine is directly salt water cooled. A 1/2″ diameter pipe leads from the main seawater inlet through a strainer to the engine and discharges overboard through the exhaust.

Engine Exhaust: A flexible exhaust hose connects the exhaust via a swan neck with water trap to the outlet fitting through the transom.

Fuel System: A stainless steel diesel tank with a capacity of approximately 38 litres, breather and integrated fuel gauge. The tank is fitted with flow and return lines, the flow line having a manual shut off valve.


Bilge System: 1 x Manual bilge pump operated from the cockpit with a handle stored in the aft locker.

Fresh Water Tanks: 2 x 10ltr plastic jerry can with manual hand pump. Also a bucket / sink.

Soil System: When fitted the heads discharge directly to sea via a vent loop and skin fitting.

Inlet / Outlet Fittings: Engine: In through a single skin fittings with a valve and strainer. Out via exhaust system.


Gas System: There is a double burner hob cooker attached to a separately stored gas bottle.


12 volt DC system

Batteries: Engine – one 12 volt 88 amp/hour.

Charging: Via main engine – a 35 amp (at 12 volt) alternator.

Switchboard: An optional switch panel is fitted to boats that have additional electronics..

Miscellaneous Standard Equipment

Deck: 1 x Bilge pump handle stowed in aft cockpit locker. 1 x Fire extinguisher – situated down below.


Joinery: The interior joinery is constructed from high quality materials and in accordance with good yacht practice. Bulkheads and side back linings are from Plywood.

Finish: All cabin woodwork is finished in mix of painted bulkheads and varnished trim.

Soles: Laminate teak & holly sole boards fitted as standard.

Upholstery: A choice of soft or wipe down plastic upholstery is available.

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