Yacht and Boat Design

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		We specialise in custom ply/epoxy or cedar multihulls for amateur building. Sail or power. We started out by home building our own boats so we are well aware of home builders requirements in the form of detailed plans and instructions. Below are some of our plans, click on them to see enlarged views. 28ft. Trailerable Folding Catamaran


		The "Clamcat" is a folding Catamaran which folds to 28 ft by 8 ft beam for Trailering. The folding mechanism is simple and easy to construct. The boat is designed for a couple, with occasional extras. Coastal cruising and some around the buoys racing, Construction plans and instructions are aimed at the home builder. One is currently, and can be seen, building at http://www.greendot.net/Altair28.htm "The Altair ClamCat 28 was designed for a client who wishes to cruise and occasionally race locally in Florida waters. The design criteria included Trailering, shallow water and light wind capability, excellent unloaded performance, double berth, adequate galley and maximum length 28 ft. This boat is designed for local inshore racing and coastal cruises with optional rigs to optimise for racing or coastal cruising. Retractable foils allow sailing in shallow water. The cruising configuration is ok for offshore minimalist cruising, the boat is not intended for a large payload. Construction of ply with cedar for hull bottom and deck is simple and quick."-Kerry Thomas

The 860

The Altair 860 is a 28 ft catamaran designed for economical home building in ply, foam and cedar strip. The design could also be built in foam/glass as a production boat.
She has a good turn of speed and reasonable accommodations for a family coastal cruising without sacrificing performance. This boat would also fit into the New Zealand multihull associations 28 ft race class with minor changes.
A roomier 31 ft version is also available.

Accomodation Plan

Other designs available

Altair concept 45
A 45 ft economical cruiser racer catamaran in ply/cedar/foam with sitting headroom in the bridge deck and full headroom in the hulls. 2 double berths and up to four singles, galley and dinette/saloon. Excellent performance is expected along with offshore cruising capability.

Kaipara flats boat.
12 or 14 ft Shallow draft tunnel, jet or outboard runabout for Northland harbours but also capable of open sea use. For fishing or exploring.

10 m Cruising cat.
This was drawn for a design contest some years ago. Coastal and offshore cruising with good accommadations and reasonable performance.

Study plans and materials lists are NZ$15 plus p+p for all designs.