New Designs


 C-C 60 Fly Br. 'Pacific' Power Catamaran


- All Alloy - All Luxury - All Space - All Speed - All Oceans -
All of the above—-EXCEPT—The EXORBITENT fuel cost associated with large  cruisers—EXCEPT—These Cats share the latest underwater shape developed for the SUNCOAST range of catamarans last year. SEE :- The table at the bottom of this page.
ALL Compu-Craft Power Catamarans are now upgraded to take advantage of the SUNCOAST PROGRAM—The  - RESULT—Much improved—ECCONOMY—Distance covered for—DOLLAR SPENT.






These boats are not only economical to operate, they are designed
to be very quick and easy to construct.
All the aluminum components in each boat is straight stock or flat sheet, every item is only bent in one plane or fitted as a straight member. No mechanical ROLLING, FORMING or FORCE in necessary to build the HULLS, BRIDGEDECK or SUPERSTRUCTURE. (If you can weld alloy—YOU CAN BUILD THESE BOATS.) This ease of construction WITHOUT the NEED for complex and expensive equipment and the labour it takes to use it, MEANS THESE BOATS will go together quickly and COST MUCH LESS to build.
THIS IS POSSIABLE because the lines are conically developed for not only the hulls but for every plate that goes to build the complete BOAT, HULLS, BRIDGEDECKS, DECKS,CABINS AND ALL SUPERSTRUCTURE, is cut to shape and welded in place WITHOUT ANY FOLDING, ROLLING, HEATING OR BASHING of any kind. JUST CUT, WELD and CLEANUP.
C-C 51 Fly Br. 'Pacific'
Look at the accommondation in this boat and imagine what could be arranged for the BIG SISTER above.


If you are looking for a small Power

Catamaran -

With Live Aboard Accommodation !

This is a unique way to provide a collection of Power Catamarans that can be built using :-

1.   Several different types of construction – Good old F/Glass, Pre-cut Composite panels, CNC Alloy Plate KITS,

Ply/Glass over Alloy Tube Frame KITS and Cedar Strip Plank (WEST).

2.   Several different types of materials – CNC Cut Alloy Plate, Pre-cut Plywood or Composite panels, F/glass

over Foam, Cedar S/P and Solid Glass.

3.   Several different underwater shapes - Each optimized to obtain the BEST economy at the SPEED required

for its intended use.

4.   Several engine options such as - Inboards, Outboards, Legs or Jets.

5.   Several different fuels – Petrol and Diesel of cause or One of Three other types of “custom built” engines

that can be configured to take advantage of less common GREEN fuels.(These motors are also very compact

and lightweight.)

The choices do not finish with the building and power options – There are Two different styles of boat to choose

from, their character, performance and accommodation layouts are the same but each has a very different

appearance to it’s colleague. (You could hardly call them Sister Ships.)

One is the very traditional Trawler type with covered walk around decks, raised foredeck with direct access from the

steering position and a large flat aft deck. A cruising couple’s, live-aboard DREAM.

The other is basically the same boat with all the same options but with to-days looks, even more interior space, a

huge step in cockpit and the swim board can be the full width of the boat. (Over 4 metres) The family will LOVE IT.

LOA                        9.6m  31ft 6in

Beam                      4.6m  15ft

Speed                    Depends on Power Choice and Displacement

Underwater            True Displacement Style Hulls that are designed not to plane and are economical to 20kts. or

Fine Planning Hulls that can achieve high speeds and smooth ride - for posing purposes.










































































To The C-C 31 Range Of Aft Cabin
Cruising Yachts
C-C 31 Trailable Centreboard Yacht
This is an INTERESTING and EXCITING every man’s FUN boat. She can be built from cedar strip plank (W.E.S.T. System) or Compu-Craft Easy-Build method. A very quick and cost effective way to build a boat.

C-C 31 Trailable Yacht001



C-C 31 Trailable Yacht

This variation of the C-C 31 has been modified to meet the road regs.  for trailer boats in

England where it is legal to tow boats up to 2.9m (9 ft. 6 ins.) wide.

Several other changes have also taken place – The increase of internal volume has

produced room for – A head in the saloon cabin, larger dble. bunk in the aft cab., headroom

has been increased particularly in the aft cab. The saloon cabin houses the biggest galley

ever seen on a 31 footer, a raised dinette that converts to a double bunk and another double

in the bow. She has a centre cockpit that is safe and protected, aft of the cockpit is an aft

cabin with a large enclosed toilet, shower and vanity, opposite is a great double bunk. The

engine has been relocated to a recess through the transom, probably a much better place

for it on a trailable boat. A new rig has been planed too, a cat ketch with unstayed  masts

that just drop into a sleeve in the deck and the sails are pretensioned as with a wind surfer.

So there you have it – A GREAT LITTLE YACHT HAS GOT EVEN BETTER     


LOA   9.652m (31’ 8”)

Beam  2.82m (9’ 3”)

Draft Hull Only  300mm (12”)

Draft C/B Down  1.9m (6’ 3”)

Hd. Rm. Galley   2.07m (6’ 10”)

Hd. Rm. Aft Cab.   1.75m (5’ 9”) 

NOTE :- This range of designs is available from 28 feet to 50 feet  in length and with a

variety of rigs ( 1 to 3 masts) and panel over alloy frame or cedar strip plank construction.

They can use the ballasted dagger centreboard as depicted here and benefit from the ultra

shoal draft when the board is up. They can have a mini-keel and centreboard, (Dagger or

swing back.) with the ballast in either the board or keel (Lightweight board.) or a combination

 of both.

Also a cockpit aft and various accommodation layouts have been used in the past.




5 New Power Catamarans

C-C 43 Fly Br PC035


Over the last few months most of my spare time has been devoted to developing a new range of

super efficient power catamarans. The purpose for this exercise was to allow future

Compu-Craft owners to GO FURTHER or FASTER for the SAME DOLLARS.

My Power Catamarans have always been far better than most at achieving this endeavour. All the C-C 38 to 44 foot range provide cruising

speeds of 10 to 14 knots for fuel consumption of a litre per nautical mile travelled and the engines installed have ranged from 65 to 120 HP

per side. This has applied now for about Fifteen years or so, after I had spent many hundreds of hours on the computers developing what was

then very advanced underwater shapes for these boats. All this work was bought about after some very encouraging results, from a

previous study and developmental program of Sailing Catamaran hull shapes to reduce the Sailing Catamaran’s unpleasant  pitching

motion (This motion  also reduced their sailing performance.) and also resulted in designs that were far less likely to capsize. All this took

place in the early Nineties and now the rising COST OF FUEL has driven me to DO IT ALL AGAIN.

That last generation of Power Catamarans was a great success, ask anyone who owns a Compu-Craft Power

Cat and they will tell you so.

NOW THERE IS A WHOLE NEW RANGE of Compu-Craft  designs,  available from 37 to 63 feet long (11m to 19.2m) and ALL OF THESE BOATS

are MUCH MORE ECONOMICAL than the previous boats.

ANOTHER piece of GOOD NEWS is that all the future plans for the present range of proven Compu-Craft power catamarans can now be

provided with this NEW IMPROVED underwater shape.

This new hull form has ANOTHER ADVANTAGE – The size of the motors are not limited to around  that 100 HP or so and a top speed of 18

to 20 knots. These boats can now be powered to cruise economically  at any speed from Eight to Thirty knots or more and do so for far less

FUEL COST, than any other type of boat. (See Table of speed/power.) The reason THIS IS SO! – These boats are not designed to rise up onto

the plane at speed as most other designs do. These are true displacement boats and a great deal of fine tuning of these designs was aimed

at preventing the bow from trimming up. On the other hand, they make very little wash and at speed trim almost level. This attitude helps to

reduce pitching and positively prevents the hulls from pounding. (A real problem with planing hulls.)

Four of the designs in this range are Fly Bridge cats similar in style to the Big Game fishing boats, but with a few different features. These

boats are designed for living aboard and long range cruising, family weekends and holiday trips. THEY HAD TO BE PRACTICAL.

So feature One :- These hulls had to be ECONOMICAL and perform IMPECCABLY at any speed, UP TO that achievable by the installed

power. This ruled out planing hulls that would perform best only at planning speed and not so well at lower speeds.

Two. The Fly Bridge style has a lot going for it, especially on a catamaran, but it needs to be put to better use than just a sundeck and a

place to steer the boat from – Then let’s put some accommodation in it as well. The steering position is still there of course, plus a couple of

moveable stable chairs, a spacious lounge/dinette that folds into a double bunk, for those calm starry nights, and next morning there is

a small galley to knock up a cuppa in bed before breakfast on the upper deck. This galley also serves as a bar through the day.

Three. To get to this little heaven in the sky, there is a proper set of stairs. Not a fragile S/S ladder that scares the daylights out of the little

woman. YOU NEED her up there to serve the drinks and cook the brekkie. (And nudge you, when the boat is about to go aground.)

Four. The owners of these boats will often do their own maintenance, so the engine rooms had to be spacious, stand up headroom and Two

metres wide.Now if you look at the drawings I’m sure you will notice many more features of interest.

C-C 43 Fly Br PC034

C-C 43 Fly Br PC036



The other design in this collection is the C-C 43 Family MS  the details are set out below and the first question should be – What is MS?

MS stands for “MOTOR SAILER”. That’s right a Motor Sailer Catamaran.

This design has borrowed features from both Power and Sailing cats, such as Two large double cabins in the stern, along with a large hard

top covered cockpit, an elevated steering position that has 360 degree vision over the cabin top with seating for Three people, a huge

saloon galley and dining area. Top this off with Two spacious lockup tlt. shr. vanity and double cabin suites, again the engine rooms have

standing hd. room and miles of space round each engine.

The drawings here show the Power Cat version without a rig, but I am in the process of completing the sailing version. Note :- This design

has no centreboard,(It could have.) so it will not go to windward without some engine assist. However IT WILL GO VERY MUCH faster than

most other mono motor sailers on all other points of sailing. If long range cruising at constant above average speeds is a dream, then this

boat with its great accommodation and a Twenty HP diesel in each hull, will be a very cost effective and convenient CRUISING MACHINE.              

C-C 43 Family MS037 


The NEW DESIGNS that make up this range are listed below

Compu-Craft – C-C 43 Family MS Power Catamaran.

LOA.                13.3m              43’ 8”

LWL                 13.0m              42’ 7”

Beam               6.32m              20’ 9”

Draft                0.9m                3’0” 

HP/Side                      Top Speed                  Cruise                       Call Up HP

21                                10kts                            7 / 8kts                        16

63                                15kts                            10 / 12kts                    30

137                              20kts                            15 / 17kts                    75

231                              25kts                            18 / 20kts                    131

375                              30kts                            24 / 26kts                    242

NOTE :-  The C-C 43 Family MS (Above) Can Be Rigged As A MOTOR SAILER. 

Compu-Craft – C-C 37 SunCoast Fly Bridge Power Catamaran. (Plan Yet To Be Finished.)

LOA.                11.3m              37’ 0”

LWL                 9.88m              32’ 5”

Beam               5.25m              17’ 3”

Draft                0.76m              2’6” 

HP/Side                      Top Speed                  Cruise                          Call Up HP

NOTE :-  Engine Requirements Are Yet To Come. 

Compu-Craft – C-C 43 SunCoast Fly Bridge Power Catamaran.

LOA.                13.4m              43’ 11”

LWL                 11.72m            38’ 5”

Beam               6.15m              20’ 2”

Draft                0.9m                3’0” 

HP/Side          Top Speed                 Cruise                       Call Up HP

21                    10kts                            7 / 8kts                        16

65                    15kts                            10 / 13kts                    42

135                  20kts                            14 / 16kts                    70

235                  25kts                            17 / 20kts                    130

370                  30kts                            24 / 27kts                    240     


Compu-Craft – C-C 53 SunCoast Fly Bridge Power Catamaran.

LOA.                16.15m            53’ 0”

LWL                 14.2m              46’ 7”

Beam               7.51m              24’ 7”

Draft                1.1m                3’7” 

HP/Side                      Top Speed                Cruise                         Call Up HP

27                                10kts                            8kts                              18

82                                15kts                            10 / 12kts                    36

165                              20kts                            15 / 17kts                    95

290                              25kts                            18 / 20kts                    153

450                              30kts                            25 / 27kts                    355 

Compu-Craft – C-C 63 SunCoast Fly Bridge Power Catamaran.

LOA.                19.08m            62’ 7”                         

LWL                 16.76m            54’ 9”

Beam               8.74m              28’ 8”

Draft                1.3m                4’26” 

HP/Side                      Top Speed                Cruise                        Call Up HP

91                                15kts                            12kts                            60

206                              20kts                            17kts                            124

390                              25kts                            18 / 21kts                    195

650                              30kts                            24 / 26kts                    385

800                              32.5kts                         25 / 28kts                    410 

NOTE :-  All these boats can be powered for more performance.





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