PORTABLE SPEED

Tris are fast on the water--and the road

Today's trailerable trimarans offer double-digit speed capability under sail and overland portability. Here's what to look for.

ABOVEDECKS

Prepare to go fast. Even the smallest tris are capable of speeds in the teens under sail. Also prepare to sail wider angles upwind than you would on a monohull. But why worry--you'll probably be going twice as fast.

Make sure the beams and hinges are overbuilt, the hull structure is heavily reinforced, and the beam locking mechanisms are easily accessible.

Tris are maneuverable under power with the outer hulls retracted.

Make sure the boat's retractable rudder will provide adequate steerage in thin water.

All tris are designed to be easy to rig, but you'll need to apply some elbow grease to hoist the mast using a gin pole.

Make sure the helm station is comfortable and that there is a long tiller extension to permit steering from the windward hull.

The trampolines between the hulls should be taut and be able to stay fastened even when the outer hulls are retracted.

If you're planning some weekend cruising, make sure there are adequate mooring cleats and anchor stowage.

BELOWDECKS

The narrow main hull is the only living space. Smaller tris lack standing headroom and provide camping-style accommodations, but most trailerable tris over 30 feet provide standing headroom, an enclosed head, and up to six berths. Stowage in the hulls can be used for gear that won't be damaged if it gets wet.