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Catalac 8M with twin diesels




Tom Lack Catamarans, Christchurch, Dorset.



Price reduced



27' 0"

Sail area

386 sq ft main and genoa

Brief details


13' 6"



This Catalac 8M is a cruising catamaran with twin diesels fitted new in 2010, making her a very spacious and versatile cruising boat. The twin hulls have chined vee-bottoms, and she will dry out upright on sand or mud bottoms. Like all catamarans, the lack of heeling beyond 5 or 10 degrees is a feature many people value, as is the space both below and in the cockpit.


2' 4"




3,000 kgs


2 x Vetus diesel

Keel type

Vee-hulled catamaran


each 11 bhp

Tom Lack Catamarans Ltd. started out building Bill O'Brien designed Bobcats in marine ply, but in around 1970 started working with designer John Winterbotham and created the first Catalac 9M. The slightly smaller 8M followed in 1975, and was the most popular model of the range, which eventually included 10 and 12 metre versions.

The 8M and 9M Catalac designs were slightly modified to Mk II in about 1980, by adding a skeg and changing the rudders from lifting blades to fixed rudders supported at the base by the skeg. This modification improved the windward performance of the boats, and this yacht, although built before this change, had a similar skeg and rudders fitted when new twin diesels were installed in 2010. At around the same time the hulls were coppercoated.

All the Catalac range are pure cruising catamarans, with moderate displacement and modest but adequate sail area. They are not designed for high speed, although on all points of sail except dead to windward are as fast or faster than most similar length monohulls. Catalacs are not designed to "fly hulls", and except in very extreme conditions (unlikely to be experienced in any normal cruise) are virtually capsize-proof. Over the years quite a number have made transatlantic and longer passages.

The 8M Catalacs were usually powered by a single outboard of 10-15 hp mounted on the back of the bridge deck, but some were built with twin Yanmar 1GM engine of 6 or 9 bhp

Production of Catalac catamarans made by Tom Lack ceased around 1985, although other builders took over the various moulds and continued building Catalacs in smaller numbers thereafter. About 600 Catalacs in total were built by Tom Lack Ltd.

Catalac 8M with twin diesels for sale

Yachtsnet photographs October 2015

Catalac 8M with twin diesels for sale

Below: Many Catalac 8Ms including this one were fitted with a fixed shelter over the companionway hatch, giving additional shelter. This structure is actually asymmetric, with sides more vertical on the "doorway" side. It looks odd from some angles, but works well.

Bow view
Catalac 8M with twin diesels for sale
Helm position

The saloon is in the central section over the bridgedeck, with standing headroom
under the raised canopy, and sitting headroom by the table and seating.
Forward of this (the other side of the two circular perspex windows) is the
forecabin with a double berth 6' 3" long by 4' 10" wide (photo below).
Access to the forecabin is via the starboard hull and galley area.

Forecabin double berth

Above and right: Access to the forecabin is via the galley which is in the starboard hull. Headroom here is 6' 3"

An Engels 12v front-opening fridge is built in at the aft end of the galley

Port hull

The port hull holds a very long (7' 6" plus but narrow - 23" tapering to 16")
double berth, forward of which is the heads compartment

Catalac 8M

When the two diesels were fitted in 2010 the hulls were fitted with skegs similar to the Mk II Catalacs, to protect the props. This change is also said to improve windward performance.

The hulls were
also coppercoated.

One of the twin diesels

For sale now through ill health of the owner, this Catalac offers a
versatile coastal cruiser with the advantage of twin modern diesels.

Equipment List:

Engine details

2 x Vetus M2 C5 2-cylinder 11 bhp freshwater cooled diesels installed new 2010 with new gearboxes, shafts, props and twin plastic fuel tanks

Fuel tank capacity

2 x 65 litre


2 x fixed


2 x engine start batteries and separate services battery, all cross-switchable

Battery charging/electrics

2 x engine alternators, split charger and solar panel to charge services battery

Sails and deck equipment

Rig details

Sloop rig, alloy mast with Easyreef in-mast mainsail reefing. S/S standing rigging renewed 2010. Mast in tabernacle for lowering.


Maxi-roach in-mast mainsail


Roller genoa

Genoa furling


Other sails

Ghoster with whisker pole

Primary winches

2 x Barton G8 on coachroof

Halliard winches

2 x on mast

Bower anchor

Danforth approx 10 Kg with chain and warp

Kedge anchor

Danforth approx 5 Kg with chain and warp


Hydraulic wheel


Autohelm 3000 wheel pilot

Steering compass


Warps & fenders

4 warps and 4 fenders


Cockpit cushions

Navigation Equipment and instruments


Simrad CP33 6" chartplotter


NASA Clipper Duet

Depth sounder

NASA Clipper Duet

VHF radio

Cobra F55 with DSC

Safety/emergency equipment


2 x horseshoe

Bilge pumps

5 x electric pumps for both hulls, lockers and engine compartments

Gas detector

Pilot twin sensor gas detector


Cabin layout

Saloon in bridge-deck with two seats and table, converts to large double berth, forward of this is a permanent double berth. In the port hull is the heads and a single berth, in the starboard hull is the galley.



Water tank capacity

2 x 35 gallon


Plastimo Neptune 2500 two-burner, grill and oven


Engels front-opening fridge


Jabsco twist-and-lock






Plastimo P310 HA 3.1 metre inflatable with aluminium bottom and wheels - available by separate negotiation



Tohatsu 2-stroke - available by separate negotiation

These particulars are believed to be correct but cannot be guaranteed and are subject to confirmation by the purchaser subject to still being available.

For further information or to arrange a viewing,

please contact Yachtsnet on 01326-212234


The particulars detailed herein are intended to give a fair description of the vessel but their accuracy cannot be guaranteed. These particulars are not a part of any contract or offer, and are supplied on the understanding that all negotiations shall be conducted via Yachtsnet Ltd., who are acting as brokers for the vendor. The vendor is not selling in the course of business unless otherwise stated. The prospective purchaser is strongly recommended to check the particulars, and where appropriate, at his own expense, to employ qualified agents to carry out surveys, structural and/or mechanical & electrical checks or tests

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