11.25m Gaff Ketch,Holts design and build,1977

Price Details

OIRO Price: £35,000 GBP
Location: Brightlingsea, Essex  GB
Year: 1977
Condition: Good , Re launched May 2017
Category: Sail
Class: Antique and Classics
Keel Type: Full Keel


Martha Kathleen is a massively robust and strong vessel built for her present owner’s parents back in 1977. Intended for short handed cruising in the Western Isles of Scotland. A beamy traditional styled boat with plenty of internal volume and excellent sea going qualities.
She is carvel planked in Iroko , carries a heavy cast concrete keel.
Internally, she has lead and iron ingots ( bilges have recently been shot blasted and epoxy coated).  Deep aft open self draining cockpit. Deck is laid and scrubbed Iroko. There is an 8ft x 12ft coachroof  over the main accommodation giving a generous headroom of 6ft 4ins plus  below.


Length Overall: 13.34 m
Length Of Deck: 10.97 m
Length At Water Line: 10.06 m

Beam: 3.76 m
Draft: 1.73 m
Max Draft: 1.73 m


Fuel Tank Capacity: 50l  Stainless steel
Water Tank Capacity: 25l in water containers.
Displacement: 15 tonnes
Cruising Speed: 5 knots
Engine Power: 50hp
Number of Engines: 1


Berths: 8
Cabins: 2
Heads: 1
Passenger Capacity: 6


Builder: Holt & James
Designer: Arthur Holt
Boat Name: Martha Kathleen


Hull Material: Wood
Hull Design: Displacement
Hull Speed: 7: knots


Engine Model: Thorneycroft 50 type
Fuel Type: diesel
Engine Description: Thorneycroft 1977, 4 cylinder diesel engine.
Morse cable controls. Charged via alternator and solar panel
Sited aft. Electric start. Last serviced April 2017 engine bearers and mounts were replaced.
Hydraulic wheel steering from aft of the cockpit.
Raymarine autopilot and tiller.
Fixed triple bladed propeller, shaft driven.

Sea water heat exchanger

Relaunching May 26th 2017, with still a good load of re rigging, cleaning and sorting out to do on deck and below.


Carvel planked iroko on laminated iroko frames.
Wide open laid iroko decks with a simple coach-roof forward of the mizzen and a deep and secure self-draining cockpit aft of it.
She has had considerable work cleaning out her bilges and re-ballasting, re-caulking. External long ballast keel .


From companionway below there is a chart table stb’d and a galley area to port with two burner gas stove, racked for two ‘in-use’ , five gallon water cans and small basin to port. Main saloon has a large fixed dining table . 2 x full length and wide settee berths running aft  below on both sides of the cabin  with lockers under and behind .
Going forward the heads are to port  with Jabsco marine seatoilet  and a rack of two gallon water cans, a hanging locker opposite. A solid fuel stove against the mast deck bulkhead. In the focsl’e there are four berths one is of a double width and the opposite number is used as the bosun’s locker.
a fore hatch with fixed companionway ladder to hatch and foredeck. The forepeak for chain, fenders and warps is open to the focs’l.
Cockpit: Deep open Aft  cockpit with seat lockers including vented gas bottle locker and lockers behind. Gimballed compass mount and Raymarine display.  Aft locker for sails and five gallon water cans. Hydraulic wheel steering and Morse controls for engine.



Rig: Gaff ketch with Bermudian mizzen, galvanised iron standing rigging and running backstays, bottle-screws. Bowsprit can be run in for mooring in marinas.
Sails: No1 jib on Wykeham-Martin roller, No2 and No3 jibs set flying (older sails), Stay sail with one set of reef points, Mainsail with two deep reefs, Mizzen with one deep reef, jackyard topsail, mizzen stay sail (older sail), light air jib that fills the fore triangle and asymmetric reaching sail with snuffer.
Running rigging replaced and standing rigging enhanced, new working sails and light air jib from James Lawrence and an asymmetric reacher from Jeckells.
Fore triangle height (I):
38.00 ft
Fore triangle base (J): 19.50 ft
Mainsail head (G): 13.00 ft
Mainsail luff (H): 18.00 ft
Mainsail foot (F): 14.00 ft
Mizzen luff (H): 16.00 ft
Mizzen foot (B): 9.50 ft
Topsail perpendicular (TI): 12.00 ft
Topsail luff (TH):18.00 ft
Calculated T(H)CF: 0.991
Navigation Equipment:

Raymarine chart plotter, depth and log, anemometer, hydraulic autopilot, Garmin GPS at chart table, AIS receiver and VHF. Solar panel supplies two 12v batteries (one 2015, other 2016)