The C1100 is an 11 metre aluminium catamaran, offered as the C1100 cab with pricing on application. At this size every project is different, so the kit is quoted against the specification rather than sold from a price list.

The hulls are 11.00 m long with an 11.80 m overall length on a 4.00 m beam. Plate is 6 mm on the bottom, 4 mm sides, 4 mm decks and 3 and 4 mm cabin. Deadrise at the centre of gravity is 18 degrees and the deck is self-draining. Fuel capacity is 2 x 500 litres for 1,000 litres total, and person capacity is twelve. Power is twin outboards to 350 hp each, with 2 x 250 to 300 hp recommended and a 370 kg per-engine weight limit.

With a 4 metre beam, the deck area and interior volume available at this size support a wheelhouse with proper seating, a head, a galley, dive or survey equipment, and a working aft deck with room to move.

This is the size around which Sherwood Marine's commercial and recreational work really converge in catamaran designs. We design patrol boats, rescue vessels, fire boats, passenger vessels and work and utility craft on catamarans in this range, and the same hull thinking underpins the C1100 – it’s a serious offshore platform with proper tunnel clearance above waterline. It suits dual-use applications, or as a pleasure boat with more rugged use in mind.