<Li> Sheet - A rope used to control the position of a sail e.g. the main sheet controls the position of the main sail . </Li> <Li> Skeg - A long tapering piece of timber fixed to the underside of a keel near the stern in a small boat to aid directional stability, especially in a kayak or rowboat . </Li> <Li> Spar - A length of timber, aluminium, steel or carbon fibre of approximately round or pear shape that is used to support sails . Such as a mast, boom, gaff, yard, bowsprit, prod, boomkin, pole or dolphin striker . </Li> <Li> Sole - the floor of a cabin or cockpit . Often the cabin floor is made in sections that can be lifted quickly to gain access to the bilges in the event of a leak . Cockpit floors on yachts are often self - draining so that water will drain out even when the vessel is sailing at an extreme angle . In many high speed skiffs the craft is fitted with a sole angled aft to rapidly drain the spray through an open transom . Often this type of sole is called a false floor . </Li>

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