The sections aft are designed to support the full aft cabin configuration with buttock lines that run out at a milder angle.

Narrow catamaran hull. But above the waterline you will experience the comfort of a cruising catamaran with a high-volume hull. Make it too wide and you end up pitch-poling with too much sails on. The narrow beam means you pay standard monohull fees at most marinas.

The wider it is the more stabilityhowever at some point excessive beam becomes unmanageable. This produces a faster better-supported hull. Both are totally impractical.

The easily driven and enormously stiff platform offers the potential for higher speeds under sail or power and increased range under power. There is also a lot of data for the round bilge narrow non planing motorboats popular in the 1930-50s which again are similar to a single multihull hull. The formula for catamaran hull speed is 134wetted length12.

Americas Cup AC72 Design - Narrow Hull Catamaran. Make it too narrow and she cant carry sails enough to be a decent sailboat. The beam is narrow compared to modern designs the later Elite is wider and the hulls aft dont have sugar scoops for swimming platforms.

I designed this with the idea that a narrow hull with a flat front. Catamarans allow for very high stability with very narrow hull beam and deep draft. If You look at this book they quote our research on small catamaran beam selection - High Speed Catamarans and Multihulls - Technology Performance and Applications Liang Yun Springer.

The hull has a narrow waterline beam to maximize performance. A boat that can move her nearly 50 US tons 45 metric tons at 13 knots using less than 200 hp. The design concept comprises a narrow long hull that cuts through waves.