2. a ship's boat having double-banked oars and one or two lugsails. Crank - easily keeled over, especially by wind or sea through improper design or loading. 2. to shove off, Sheer Strake - the top plank, under the gunwale, of the topsides. Expect 4.1 mm of precipitation over the past 3 hours. Verb: to use the lead and line (sounding line) or some other device for measuring depth 4. to go down or touch bottom, as a lead. Bonnet - a strip of canvas laced onto the bottom of a loose footed jib in order to increase the sail area in fair weather. Any of the following sailboard sails can have, Race Sail - a sailboard sail that has camber inducers on all of its battens that is designed for slalom and triangular races, Wave Sail - an RAF sail that is designed with a high foot so that the foot won't get caught on waves while sailing in the surf. Jibe (USA), Gybe (Great Brittan) or Gibe - a downwind change of tack that makes the bow of the vessel pass through dead downwind. Strictly, a three-masted vessel square-rigged on all three masts, or on three masts of a vessel with more than three. Right of Way - the right to continue on a current course without changing direction or speed. Galvanic reaction is the principle upon which batteries are based. Celestial Navigation - determination of position, and thus, the total process of navigation based on your position, by the position of the sun, moon, and stars. A little weather helm is good in limited amounts since it gives the helm a positive feel when steering and allows the helmsman to monitor how the boat reacts to changing wind conditions. These vary slightly in wording and in the signals that vessels must use from the COLREGS that are used in outer waters and on the high seas. The exception to this scheme is the course (lower main sail on each square-rigged mast), which does not have a yard below it. Monohull - a vessel with a single hull, as opposed to a multi-hull boat like a catamaran, proa, trimaran, etc. if your Compass reads 275°, your True course is 265°. 5. A stronger gust might require a full-fledged luffing of the sails. Seiche pronounced "saysh" - an unusual, rhythmic oscillation of water in a lake or a partially enclosed coastal inlet, such as a bay, gulf, or harbor. Primer Bulb - 1. a rubber squeeze valve in the fuel line of an outboard engine that, when squeezed, forces gasoline into the carburetor to prime the engine, Privateer - A privately-owned ship authorized by a government (by means of a Letter of Marque) to conduct hostilities against an enemy. Compare to other sailboat types on this page. Often the rolling brakes the mud's suction and she can be pulled free and gotten underway. Expect 0.5 mm of precipitation over the past 3 hours. Also see Tide. In San Francisco Bay, and even the Hudson River, teredo worms are becoming an increasing threat to wooden pilings supporting harbor infrastructure. See illustration at Prevailing Winds of the World. Leech Cord - a small line running through the tabling on the leech of a sail that can be tightened to reduce the fluttering of the trailing edge of the sail in certain conditions. Bight - 1. the central portion of a rope between the ends or end and standing (hitched to an object) part of the rope. (More Info), Here we try to capture the feel of the weather as an image � it will never be perfect but is useful for a quick overview. //-->. Swigging - to take up the last bit of slack on a line such as a halyard, anchor line or dock line by taking a single turn round a cleat and alternately heaving on the rope above the cleat and pulling on the tail below the cleat Also called to Veer and Haul or to Sweat and Tail. Pile or Piling - a wood, concrete, or metal pole driven into the bottom. The agonic line is a line of longitude on which a compass will show true north, since where magnetic declination is zero, magnetic north coincides with geographic north. The anchor buoy is said to be watching if it is floating on the surface. Also, if a hull is given a new coat of paint, it extremely important that its boot top be repainted at the proper height on the hull. Compare to a Wharf, Jetty, and Quay. Called "Typhoon" in other parts of the world. On a sailboard, if your right hand is forward, you are on a starboard tack. Approximately 1,000 - 30,000 volts per centimeter is required to induce St. Elmo's fire; however, this number is greatly dependent on the geometry of the object in question. Compare to Jetsam and Flotsam and Derelict and Lagan or Ligan. Strake - one row, from stem to stern, of the overlapping planks in a hull, Stretchers - athwartship, moveable planks or spars, against which oarsmen brace their feet when pulling, Strike Sails - to shorten, douse, drop, or lower sails, Stringers - longitudinal strengthening timbers inside the hull, Strip Building - a planking method in which strips of wood are edge-fastened together to form the hull, Strongback - a heavy reinforcing timber that runs athwartships and rests on top of the keel on some vessels like the skipjack, Studding-sails (pronounced "stuns'l") - long and narrow sails, used only in fine weather, on the outside of the large square sails of square-rigged sailing ships, Stuffing Box - a fitting that seals and lubricates the propeller shaft where it exits the hull, S-Turns - repeatedly making shallow, carved turns while still maintaining the same general course without tacking or jibing, S-Twist - twisted rope with a left-hand or clockwise lay; opposite of and less common than Z-twist rope, Suit of Sails - the full complement of the vessel's sails, all sail aloft, Superstructure - Cabins, Wheelhouse, Bridge, Deckhouses, etc., built above the decks, Surf - waves leaving deep water and breaking in shallow water, Surfing - the action of a vessel, sailing downwind, as it accelerates down the face of a wave, Surge - A vessel's transient acceleration and deceleration in a fore-and-aft direction. As far as J! 3. an engine permanently mounted within the hull and whose only parts outside the hull are part of the drive shaft and propeller, Inboard/Outboard (I/O) - a propulsion system that uses an inboard motor, mounted at the transom, with a propeller assembly, similar to the bottom of an outboard, mounted on the outside of the transom, bolting to the motor with the transom sandwiched between, Inflatable Boat - a craft that has an inflatable hull and pontoons, or, perhaps, a flat, rubber hull with floorboards and pontoons for the above water hull; frequently used as tenders for larger vessels. It has three strands and the number of threads it contains determines its size. Hull Speed (in knots) = 1.34 times the square root of the waterline of a vessel in feet. Binding Knot - a knot that may be used to keep an object or multiple loose objects together, using a string or a rope that passes at least once around them. It is also known by other names such as pilot bread (as rations for ship's pilots), ship's biscuit, shipbiscuit, sea biscuit, or sea bread. The Westerlies are particularly strong, especially in the southern hemisphere, where there is less land in the middle latitudes to cause the flow pattern to amplify, or become more north-south oriented, which slows the Westerlies down.
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