Mana 24 - Self-Assembly 'Cat-Kit'

Home Self Build Boats Mana 24 - Self-Assembly 'Cat-Kit'

Wharram's First Kit Boat

Introducing the CNC-cut self-build 'Cat Kit', a trailable family camping boat. All plywood parts are pre-cut - just take it out of the box and assemble it yourself! Keep it at home, trail it and sail it anywhere. MANA is the Polynesian word for 'spirit' given to an object by its maker or the person that uses it.

  • Mana 24 with decktent
  • Mana 24 moored in a creek, man standing aboard
  • Hanneke and two helpers putting cable ties on the joints of a catamaran hull
  • A big box full of plywoood parts and other boat components
  • Mana 24 pre-cut plywood parts on a work bench
  • Mana 24 with decktent on a pontoon

An Economical Way To Enjoy Sailing

Due to the present period of financial austerity and increasingly high marina costs, a large number of would-be sailors are having a hard time financing the dream of sailing their own boat.

However, there is an economical way to enjoy sailing, by building your own small lightweight boat, keeping it at home and trailing it to the waters you want to sail in, chasing the good weather. This gives the opportunity to explore many more sailing areas than if based on a permanent mooring and at a much lower cost.

In designing the MANA, we explored this idea and looked sideways into the world of camping and have combined the innovative CNC cut "flat pack" boat-building concept with the philosophy of outdoor living to create the unique MANA camper-sailer, specifically designed for trailer sailing.

All these ideas have come together, resulting in the new MANA 24 design, a catamaran specifically designed for trailer sailing. The MANA kit is sold with all the plywood cut out by CNC cutter, so building the boat at home will be a bit like assembling a flat-pack. All the parts slot together perfectly so a hull can take shape in a day.

A person slotting CNC cut pieces of plywood together
CNC cut bulkhead parts on a table

Building from such a kit takes away the worry of measuring and cutting all the boat parts, which can be quite daunting to many first time builders and saves a lot of time in the early stages of building. As she is built from a pre-cut kit, we have been able to give the Mana more complex and beautiful shaping, giving her more interior volume than the Tiki designs. During construction all the kit parts slot together and are locked with wooden wedges, so no room for error. Even all the stitch holes (for fastening joints with cable ties) are drilled and lines scribed where to glue on bearers and stringers.

MANA's 23'6" hull length has a special significance for James Wharram. In 1956 he made the first successful catamaran voyage across the Atlantic in his first catamaran, the 'Tangaroa', also 23'6" long.

In trailer/sailer design every increase in length equals harder launching and recovery work. At 23'6"- 7.15m hull length MANA 24 sits between our TIKI 21 and TIKI 26 designs (both very popular trailer sailers), with easier launching and handling like the smaller TIKI 21, but an interior space close to that of the Tiki 26. Her new chined hullshape gives more width for the bunks, which are placed aft where the hulls are widest, and where there is least motion.

A catamaran hull turned on its side, heat lamps above, Hanneke working with epoxy
Hanneke and two helpers putting cable ties on the joints of a catamaran hull

For speedy assembly the hulls and beams of the MANA are connected with quick-fit webbing straps with over-centre buckles, which are very strong and much easier to fit than bolts.

With the main mast of the MANA placed well forward the platform gives ample flat space for a low cost dome tent or a custom-made pramhood tent, which can double as spray hood when sailing. Adapting camping habits to a sailing lifestyle gives wider sailing opportunities at minimum cost and lots more family fun!

MANA uses the well proven Wharram Wingsail rig in a new Catrig configuration. The Wingsail rig is a modern version of a high aspect Dutch style gaff rig, sleeved round the mast for maximum aerodynamic efficiency.

In this new Catrig configuration the mainsail gives the drive with a very clean leading edge. The small mizzen aids with balance, steering and tacking. Having no jib, there is no need for a very tight forestay. The standing rigging uses the latest dyneema rope, which is light and easily set up. The mizzenmast can be used as sheer pole for single-handed assembly.

Mana 24 with decktent erected
Mana 24 moored in a creek, man standing aboard

Mana 24 Design Data

Building Method: Ply/Glass/Epoxy/Laminate
Length Overall: 23' 6" 7.16 m
Beam Overall: 12' 8" 3.85 m
Waterline length: 20' 10" 6.35 m
Beam of each hull: 3' 2" 0.97 m
Max draft: 18.5" 0.47m
Headroom over seat/bunk: 3' 0.90 m
Sleeping capacity: 2 single bunks in hulls, double birth under decktent
Dry weight (approx): 1190 lbs 540 kg
Maximum displacement (Approx): 2510 lbs 1140 kg
Sail area: 216 sqft 19.6 sqm
Deck sleeping area: 7'3" x 8' 2.20m x 2.45m
Full deck area: 7'3" x 11'6" 2.20m x 3.50m
Bird's eye layout drawing of Mana 24 catamaran

What You Get In A Mana Kit

CNC cut plywood parts, timber parts, epoxy materials, fastenings, ropes, blocks and fittings are all included in the kit. See the price list.

A completed Mana hull and a hull in component pieces
CNC cutting machine with cut plywood pieces
Hardwood blocks and fittings
Bags of metal hardware
Bags of ropes, glue, tape, gloves

Transporting The Mana Kit

The entire kit can fit and be transported in the back of a van with ease. The van in the photos is a VW Transporter.

Two men lifting plywood parts into a van
Three men stood at the back of an open van with plywood parts inside

Boat In A Box

Your Mana 24 kit will arrive in a box like this!

A box on a trailer
A man looking inside a box full of plywood parts and fittings

We're Taking Orders

The Mana 24 kit is now available and we are taking orders. We will be handling each order individually due to different options and shipping costs, so if you would like to discuss ordering a Mana kit, please contact us, we will then be able to work out shipping details to your building site and supply you with a pro forma invoice.

Mana with sails up

Price List

Cost of complete kit, including all fittings, masts and sails is £12,750 (if bought complete, separate costs below). All prices excluding VAT, and excluding shipping costs (shipped FOD, Freight on Delivery).

If your budget is tight, it is possible to buy the kit in two stages, buying masts, sails, rigging, ropes and fittings later. Or you can buy just the basic Boatbuilding Kit which includes the building rights and plans, and source fittings, rope and fasteners yourself as all are detailed in the plans.

1. Boatbuilding Kit - Total Cost £9,975

  • Complete set of plywood parts to build two hulls, crossbeams and motorbox, CNC precision cut. All plywood Robbins Elite BS1088 Marine Plywood, guaranteed for 15 years, manufactured from selected Gaboon (Okoume) veneers throughout
  • Platform panels, 2 large, 2 small, prefabricated from 40mm plastic honeycomb, glassed top and bottom
  • Small hardwood timber parts, CNC cut to size, ready for final shaping, sanding and fitting
  • Perspex windows and washboards, CNC precision cut
  • WEST Epoxy kit, includes all resins*, pumps, fillers and glass cloth, mixing sticks, 1 box vinyl gloves, 1 rubber squeegee
  • Sikaflex 295 for fitting windows
  • Sikaflex 221 for bedding fittings etc
  • Neoprene rubber for sealing hatches
  • Rubber for padding beam mounts
  • Gripfast nails, stainless steel machine screws, cable-ties and roller-sleeves (to be cut into paint/epoxy-pads), 2 paint-pad handles.
  • Douglas Fir timber for stringers, framing etc and hardwood for hatch coamings (mahogany) and keel strips (iroko), all in long lengths to be cut to size by builder*

*N.B. For overseas customers Boatbuilding Kit should be bought excluding the long lengths of Douglas Fir and hardwood timber for easier transport. Cost deducted by £1100. We can also not include the epoxy resin and hardener as these are hazardous products with freight restrictions. You will need to buy these through your local dealer. Cost for these deducted by £900. (i.e. Cost of Boatbuilding kit excl. long timber and epoxy £7,975).

2. Blocks, Fittings And Rope Kit - Total Cost £1,200

  • All blocks, cleats, shackles and other fittings to rig the Mana
  • All ropes for sheets, halyards, lanyards and standing rigging (Dyneema)
  • Stainless steel buckles and webbing straps for crossbeams
  • Shockcord for tillers and hatches
  • Aluminium boathook/mizzen boom
  • Set of fittings for both mastheads and hinging unit for base of main mast, fabricated from aluminium and stainless steel

3. Sails, Made By Jeckells Of Wroxham - Total Cost £1,530 (Specify Colour)

  • Mainsail with two reefs
  • Mizzen with 1 reef

4. Masts* - Total Cost £510

  • Aluminium mast tubes. 4 ½” OD x 10swg for main mast, 2 pieces @ 5m and 2.30 long, plus sleeve. 3” OD x 10swg for mizzen, 4m long.

*N.B. For overseas customers we suggest you source your mast tubes locally as shipping long lengths will be costly.

Collage of images of a catamaran

Building Time Estimate

We kept precise building hours while building the prototype. We built to a high quality standard with excellent finish, i.e. a lot of time spent on precision sanding, fairing etc. Building time in the early stages of building is greatly reduced by the CNC cut plywood parts, which takes away all the worry of measuring and cutting and lets the builder assemble the hulls very quickly.

Summing Up Of The Times We Took

  • All construction work; hulls, beams, gaffs, tillers, hatches, including epoxy coating all interior surfaces: approx. 500 hours
  • All exterior glassing work; hulls and crossbeams: 90 hours
  • All sanding of glassed surfaces: 45 hours
  • Painting, two coats epoxy primer, two coats 2-pack topcoat incl. non-slip decks and antifouling: approx. 80 hours

N.B. What should be noted is how many hours it takes to do sanding and painting compared to the building time. Glassing, sanding, fairing and painting add up to 30% of the total building time. On our basic building time estimates in our Design Book, final finishing and painting are not taken into account. Working from a kit does save many hours.

Transport Sizes And Weights

  • The plywood kit, including made-up platform panels will be in labeled bagged bundles measuring in total approx. 2.5m x 1.20m x 0.3m and weighs around 300kg
  • Fastenings, blocks, fittings and ropes, 1 box, approx. 60 x 40 x 30cm. Weight 25kg
  • The WEST epoxy kit measures approx. 1.3m x 0.6m x 0.45m and weighs around 100kg

For overseas transport the above items have to be packaged in one special wooden pallet crate - 2.62m x 1.29m x 0.77m - at additional cost of £250.

  • Timber will be a long parcel (around 3.5m - 4m long) and will weigh around 50-60kg
  • Aluminium masts, in max. 5m long sections, weight incl. fittings 40kg

For overseas customers we advise them to source the timber and masts locally.

You will be able to collect the complete kit from Cornwall, UK yourself on a trailer or in a van saving on a lot of shipping costs and paperwork.

Contact Us

Interested in building a Mana? Contact us now: