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A stand or housing that supports and protects a vessel’s magnetic compass at the steering position. A traditional ship’s binnacle may incorporate lighting and corrector magnets or soft-iron correctors used during compass adjustment. On a yacht it may form part of the pedestal carrying the wheel, engine controls or instruments. The compass and its correction…
A spar attached to or associated with a mast that controls the foot and position of a sail. On a conventional mainsail the boom extends aft from the mast, supports or tensions the sail’s foot and transfers loads from the mainsheet, vang or kicking strap, outhaul and reefing systems. It pivots across the vessel as…
The forward part of a vessel. The bow includes the hull structure at and around the vessel’s forward end, where the port and starboard sides converge or are joined by the stem. Its form varies with intended speed, displacement, seakeeping, cargo or accommodation needs and construction method. Some bows are fine and wave-piercing, others full…
A mooring line leading from the bow area of a vessel to a shore fitting or other secure point. It helps control the bow’s position and is used with stern, breast and spring lines as required. The direction in which it leads determines whether it mainly restrains movement away from the berth, along the berth…
A spring line led from the bow area of a vessel towards a shore point farther aft. Its fore-and-aft lead primarily checks the vessel’s forward movement along the berth. It works with an opposing spring and other mooring lines to control surge, sway and yaw caused by wind, stream, tide or passing traffic. Names such…
A spar projecting forward from a vessel’s bow to support rigging or the tack of a forward sail. On traditional rigs it may carry forestays and stays for jibs, increasing the foretriangle or spreading the standing-rigging loads. Modern yachts may use a fixed or retractable bowsprit primarily for an asymmetric spinnaker or other reaching sail…
A vertical partition that divides a vessel’s interior into separate compartments. Bulkheads help organise the vessel’s internal space and may also contribute to the strength of the hull. Depending on their construction and purpose, they may be structural, watertight, fire-resisting or simply partitions around accommodation and machinery spaces. It is therefore inaccurate to assume that…
A plug used to close a drain, opening or small unwanted hole in a vessel. Purpose-made bungs or drain plugs are fitted to openings such as dinghy drains and must be in place before launching whenever the design requires them. Their material and shape vary according to the opening they are intended to seal. Tapered…
A sleeping berth aboard a vessel, often built into the accommodation. Bunks may be single, double, stacked, pipe-framed or formed by converting seating. Offshore arrangements can include lee cloths, boards or shaped cushions to help retain an occupant as the vessel heels and moves. A usable sea berth needs ventilation, dry bedding, secure structure and…
A wearable flotation device that assists a conscious person in remaining afloat and swimming. Buoyancy aids are commonly used for dinghy sailing, paddlesports and other activities where the wearer expects to enter the water and rescue is close. They are generally designed for active users and should not be assumed to turn an unconscious wearer…
If you belive the Earth is flat, you're about to fall of the end...
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