T clew ring4/5/2023 Goosewing - to boom out the headsail to windward on a run by using a whisker pole to hold the sail on the opposite side to the mainsail. Gooseneck - the fitting attaching the boom to the mast, allowing it to move in all directions. Go about - to turn the boat through the eye of the wind to change tack. GNSS - Global Navigation Satellite System. GMDSS - Global Maritime Distress and Safety System. Gimbals - two concentric rings, pivoted at right angles which keeps objects horizontal despite the boats motion. Genoa - a large headsail in various sizes, which overlaps the mainsail and is hoisted in light to fresh winds on all points of sailing. Cringle - (1) a rope loop found at either end of a line of reef points, (2) an eye in a sail. Datum level varies on country & area.Ĭlaw ring - a fitting, which slips over the boom like a claw, to which the main sheet is attached after reefing the sail.Ĭleat - a wooden, metal or plastic fitting around which a rope is secured.Ĭlew - the after, lower corner of a sail where the foot and leech meet.Ĭlose-hauled - the point of sailing closest to the wind see also beat.Ĭlose reach - the point of sailing between close-hauled and a beam reach, when the wind blows forward of the beam.Ĭlose-winded - describes a boat able to sail very close to the wind.Ĭourse - the direction in which a vessel is steered, usually given in degrees, true, magnetic or compass. It is caused by heavy following seas or helmsman' error.īroad reach - the point of sailing between a beam reach and a run when the wind blows over the quarter.īulkhead - partition wall in a boat normally fitted athwartships.Ĭable - distance of measurement equalling 0.1 sea mile, 185 metres, 200 yardsĬentre-board - a board lowered through a slot in the keel to reduce leeway.Ĭentre-line - centre of the boat in a fore-and-aft line.Ĭhart Datum - reference level on a chart below which the tide is unlikely to fall. It is used to change the direction of pull.īoot-topping - a narrow coloured stripe painted between the bottom paint and topside enamel.īroach - when a boat running downwind slews broadside to the wind and heels dangerously. to prevent chaffing.īallast - extra weight, usually lead or iron, placed low in the boat or externally on the keel to provide stability.īallast keel - a mass of ballast bolted to the keel to increase stability and prevent the boat from capsizing.īatten - a light, flexible strip, fed into a batten pocket at the leech of the sail to support the roach.īeam - (1) the maximum breadth of the boat, (2) a transverse member which supports the deck, (3) on the beam, an object is at right angles to the centre-line.īear away - to steer the boat away from the wind.īearing - the direction of an object from an observer, measured in degrees true or magnetic.īeat - to sail a zigzag course towards the wind, close-hauled on alternate tacks.īelay - to make fast a rope around a cleat usually with a figure of eight knot.īend - (1) secure a sail to a spar before hoisting, (2) connect two ropes with a knot.īerth - (1) place occupied by a boat in harbour, (2) sleeping place on board.īilge - the lower, round part inside the hull where water collects.īlock - a pulley in a wooden or plastic case, consisting of a sheave around which a rope runs. Back - when a wind backs, it shifts anti-clockwise.īack a sail - to sheet it to windward so that the wind fills it on the side that is normally to leeward.īackstay - a stay that supports the mast from aft and prevents its forward movement.īaggywrinkle - rope, teased out, plaited together and wound around stays, shrouds etc.
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