18ft Gaff Canoe Yawl, a Sea Otter by David Moss, inboard & Road Trailer

Asking Price

Price:  £12,950 GBP
Location: Mistley, CO11 1NG, Essex GB
Make: Sea Otter 18, Raised coach roof
Year: 1998 -2001
Condition: Good and continually maintained
Category: Sail
Class: Antique and Classics
Keel Type: Lifting Keel


An 18ft Sea Otter, described as a Gaff Canoe Yawl, a Classic design built by Master Boatbuilders. David Moss of Skippool River Wyre, Lancashire.
A wooden stripped plank hull raised fore-deck version with a lifting centreboard keel, when lowered gives her a 3ft 4ins draft. An open, aft, self-draining cockpit. Wooden washboards in her companionway.  She has an encapsulated lead ballast keel. Built and designed with the utmost attention, all of her fixtures and fittings have a specific use and purpose. She carries a Gaff Rig 210sq.ft. of sail. Found to be a very stiff boat with a generous freeboard. Presently sat ashore on her road trailer, under cover gear lowered and in dry store.

A deep water mooring swing mooring, Wrabness, River Stour available by Arrangement.


Deck Length:   18ft 6ins
Length Overall:    23ft   7.01m   24ft 8m incls Bowsprit and Bumpkin

Beam:  6ft 2ins       2m
Draft: 1ft 5ins (keel up) 0.46m     3ft 4ins (keel down) 1.02m
Air Draft: 6.10m


Fuel Tank Capacity: 25litres
Water Tank Capacity: 50litres
Displacement: 2.00Tonnes
Cruising Speed: 5 knots
Engine Power: 5hp
Number of Engines: 1


Berths: 2
Cabins: 1
Heads: 1
Passenger Capacity: 3



Builder: David Moss, Lancashire
Designer: David Moss
Boat Name: Chiggo


Hull Material: Douglas Fir stripped planked
Hull Design: Displacement
Hull Speed: 6 knots


Engine Model: Mellga MD178F1E, installed new 2018. Fuel Type: diesel.
Until 2018 she had a Yanmar L70 this was replaced a new Mellga Engine MD178F1E, air cooled, direct injection diesel engine, 3/4 inch, shaft driven to a triple bladed propeller.
Electric start. Manual throttle. Engine is sited in the Starboard side cockpit locker. Various spare parts for the engine available.



Douglas Fir, 16mm thick strip planked hull, thee exterior hull  is covered with a 3.5mm Khaya (African Mahogany) veneer, which has been

laid diagonally, glued and coated with epoxy to seal . 1100lbs Encapsulated lead ballast keel, secured with alloy-bronze bolts
Keel & skeg of solid Iroko.

Open self-draining cockpit. Marine ply, epoxy sheathed and painted in Cream, laid on deck beams of Douglas Fir.

The coamings and all exterior brightwork is varnished Iroko.


A single open cabin, offers 3 bench berths, all 6ft 6ins in length. Berth cushions covered in Burgundy vinyl.
A chemical Portaloo. A manual pump for water to a galley basin. Portable Gas stove.


7ft Pram Dinghy with oars and rowlocks. Dinghy ashore is covered with tarpaulin to protect from Winter elements.
Custom built Road Trailer, twin axle, 4 wheeled (incl. a spare wheel)
Cockpit cover
Heavy duty overall Winter Cover (Tarpaulin)
Anchor with chain.
Fenders and warps
All paints Used / antifouling / varnish / thinners.
A toolbox of tools for the vessel.
Boat’s archive.

Sails and Rig:

Sails: Jib, Main and mizzen, all tan.   Total area: 210 sq ft,

Professionally serviced by Westwood Sails & Covers.



A Gaff Rig Yawl. Solid Spruce masts and boom. A fixed Bowsprit and Bumpkin, giving her an overall length 23ft.

Traditionally cut sails all of Tan terylene fabric. Fore sail has Wykeham Martin Furling gear.

Boom roller for the main sail, with slab reefing. Mizzen sail. Stainless steel chain plates.

Navigation Equipment:

Bruce Anchor 7.5kg with 19m galvanised chain.

Safety Equipment:

Manual Bilge pump, Horseshoe life ring
1 pack of Offshore flares
2 x dry powder automatic fire extinguishers

Grab rail on coach roof.



Disclaimer: Disclaimer: The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.