Speed, Strong, Flotation = Safety

Speed is Safety “Unfortunately, the speed range for typical displacement boats between 20 and 50 feet is only five to 10 knots- not nearly enough for many recreational roles. True, slow moving, full displacement vessels are reasonably efficient at carrying heavy loads because buoyancy forces sustain the weight for free, and only modest engine power…

Uffa Fox

Uffa Fox was an English boat designer and sailing enthusiast, responsible for a number of innovations in boat design. His designs introduced planing hulls and trapezing to dinghy racing, which enhanced the popularity of the sport2. He was the first to develop a reliable rotating mast, and the first to embrace mass-production2. He was born…

Competing Hull Forms Bethwaite

The competing hull forms in Murrelet (displacement in the bow and planing aft) bring up some interesting aspects in sailing the cruiser. Because the manufacturer built so many pocket cruisers, the best hull form and ballast configuration was extensively studied. For example, one contemplated factory modification in 2000, involved adding a platform to the transom…

Twin Shallow Keels

Twin keels become more effective with increased angle of heel, while a single keel becomes less effective. “No other nation has put so much faith in bilge (or twin) keels as the British. Other countries have flirted with them, but we became so enamored with the concept that they were the first choice for anything…

Planing vs Displacement Sailing

There are four modes of sailing. Displacement mode, forced mode, planing, and the 4th mode. Obviously many ocean sailboats do not plane and hence there is no reason to learn sail planing techniques on those boats. In fact it is just the opposite. There are good reasons to learn how to prevent planing on displacement…