centerboard
51Keel — In boats and ships, keel can refer to either of two parts: a structural element, or a hydrodynamic element. These parts overlap. As the laying down of the keel is the initial step in construction of a ship, the construction is dated from this… …
52Airfoil — An airfoil (in American English) or aerofoil (in British English) is the shape of a wing or blade (of a propeller, rotor or turbine) or sail as seen in cross section. An airfoil shaped body moved through a fluid produces a force perpendicular to… …
53Kon-Tiki — is the raft used by Norwegian explorer and writer Thor Heyerdahl in his 1947 expedition across the Pacific Ocean from South America to the Polynesian islands. It was named after the Inca sun god, Viracocha, for whom Kon Tiki was said to be an old …
54Trimaran — A trimaran is a multihulled boat consisting of a main hull (vaka) and two smaller outrigger hulls (amas), attached to the main hull with lateral struts (akas). The design and names for the trimaran components are derived from the original proa… …
55Cotuit, Massachusetts — Cotuit   Village   …
56Cook Inlet — This article is about the body of water. For other meanings, see Cook Inlet (disambiguation). Cook Inlet, showing Knik and Turnagain Arms Cook Inlet stretches 180 miles (290 km) from the Gulf of Alaska to Anchorage in south central Alaska …
57Centreboard — is similar but slides vertically rather than pivoting.FunctionA centreboard is used to provide lift to counter the lateral force from the sails. This is required for sailboats to move in directions other than downwind, since the force of the sail …
58Europe (dinghy) — Infobox Sailboat Specifications class symbol = numberofcrew = One loa = 3350 mm (11 ft) lwl = beam = 1380 mm (4 ft 6 in) draft = hull = 45 kg (100 lb) mastheight = mainsail = 7 msu|p=2 (75 ftsu|p=2) dpn = phrf = portsmouth = updated = olympic =… …
59Whaleboat — A whaleboat is a type of open boat that is relatively narrow and pointed at both ends, enabling it to move either forwards or backwards equally well. It was originally developed for whaling, and later became popular for work along beaches, since… …
60Cape Ann dory — The Cape Ann Dory, a traditional type of fishing boat, is a variant of the beach dory or Swampscott dory. Cape Ann dories were often fitted with a small spirit rig sail, a short folding centerboard, and washboards (bits of deck that run alongside …
