Ptarmigan 15′ Cruiser Catamaran

Description

Ptarmigan 15′ catamaran – Easy Build, Stable & Adventure-Ready

Designed for simplicity and versatility, this 15’ Catboat is perfect for sailors who want an easy-to-build wooden boat that’s stable, practical, and fun to sail. Created as an English version of the traditional catboat, she retains the catboat’s renowned stability while offering a slightly narrower beam for efficient performance on rivers, estuaries, and sheltered waters like the Blackwater.

Construction is straightforward thanks to stitch-and-epoxy methods. With just 12 sheets of 3/8’’ and one sheet of 1/2’’ plywood, you can build a strong, adaptable boat without complex joinery. Inside, you’ll find space for two simple berths and camp cooking, making her ideal for overnight trips and weekend adventures.

This design is flexible too:

• Wide side decks (or choose maximum cabin width with no side decks)

• Centreboard version, or build with a fixed ballast keel and bilge plates

• Yawl rig option included in the plans

• Alternative 14’ x 5’ motor boat version available

Despite her compact size, the 15’ Catboat delivers comfort and capability. She can be left on a mooring, easily trailed when needed, and offers stability that inspires confidence for new and seasoned sailors alike.

Specifications:

• LOD: 15 ft (4.57 m)

• Beam: 5 ft (1.52 m)

• Draft: 10’’ / 3’ (0.25 / 0.91 m)

• Sail Area: 115 sq. ft. (10.7 sq.m.)

• Weight: ~650 lbs (295 kg), plus optional 150 lbs ballast

Build your own Ptarmigan 15′ catamaran – a beautiful, adaptable wooden sailboat that’s just as enjoyable to construct as it is to sail.

 Specifications

Description	Imperial	Metric
LOA	15'	4.58m
Beam	5' and 6'	1.52m and 1.83m
Hull Mid Depth	1'10"	0.56m
Draft	10" or 3'	0.25m or 0.92m
Sail Area	114 sq.ft	10.7 sq.m
Estimated Dry weight	650lbs	295kg
Ballast	150lbs	68kg
Head Room	3'7"	1.09m
Berths	0
Hull Shape	Flat bottom plank plus 2 planks per side
Construction method	Stitch and tape
Plywood Requirements	12 x 9mm sheets 1 x 12mm sheet
Drawing/ Design Package	6 x A1 drawings	21 x A4 instructions
Guidance usage	2 - 3 Adults inland waterways
Additions and alterations included with the plans	Bilge Keels Open Version with bulwark and high peaked gaff yawl rig with jib on bowsprit