righting force

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• Metacentric height — Ship Stability diagram showing centre of gravity (G), centre of buoyancy (B), and metacentre (M) with ship upright and heeled over to one side. Note that for small angles, G and M are fixed, while B moves as the ship heels, and for big angles B… …   Wikipedia

• Pontoon effect — Note that the pontoon on the right is completely submerged, while the pontoon on the left is almost completely out of the water. [Citation title = Baltimore Kinetic Sculpture Race 2004 Race Report url=http://www.kineticbaltimore.com/KSR/2004/… …   Wikipedia

• Sailing ballast — Ballast is used in sailboats to provide moment to resist the lateral forces on the sail. Insufficiently ballasted boats will tend to tip, or heel, excessively in high winds. Too much heel may result in the boat capsizing. When sailing vessels… …   Wikipedia

• Kayak roll — The Kayak Roll (often referred to as an Eskimo roll ) is the act of righting a capsized kayak by use of body motion and or a paddle. Typically this is done by lifting the torso towards the surface, flicking the hips to right the kayak halfway up… …   Wikipedia

• Reflex — A reaction that is involuntary. The corneal reflex is the blink that occurs with irritation of the eye. The nasal reflex is a sneeze. * * * 1. An involuntary reaction in response to a stimulus applied to the periphery and transmitted to the… …   Medical dictionary

• ship — shipless, adj. shiplessly, adv. /ship/, n., v., shipped, shipping. n. 1. a vessel, esp. a large oceangoing one propelled by sails or engines. 2. Naut. a. a sailing vessel square rigged on all of three or more masts, having jibs, staysails, and a… …   Universalium

• Lifeboat (rescue) — For a shipboard vessel designed to provide emergency escape, see Lifeboat (shipboard); for other uses, see Lifeboat (disambiguation) A rescue lifeboat is a boat rescue craft which is used to attend a vessel in distress, or its survivors, to… …   Wikipedia

• Hobie 16 — See Also: Hobie 16 subsection of Hobie cat entry The ISAF International Class Hobie 16 (H16) is a popular catamaran manufactured by the Hobie Cat Company for racing and day sailing. The craft was the driving force behind the popularization of… …   Wikipedia

• Personal flotation device — A man wearing a life vest, with another life vest hanging at the lower left. A personal flotation device (abbreviated as PFD; also referred to as, lifejacket, life preserver, Mae West, life vest, life saver, cork jacket, buoyancy aid, flotation… …   Wikipedia

• Canting keel — A canting keel is a form of sailing ballast, suspended from a rigid canting strut beneath the boat, which can be swung to windward of a boat under sail, in order to counteract the heeling force of the sail. The canting keel must be able to pivot… …   Wikipedia

• Keel — 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… …   Wikipedia