Boom The spar attached to the foot of a fore-and-aft sail to hold its clew aft.


Booming-out pole A fully rigged spar used to hold the genoa or spinnaker out to windward on a run to keep it from being blanketed by the mainsail.


Bottle screws Also called ‘rigging screws’ or ‘turnbuckles’ (USA), these are permanently fitted double-ended screws that tension standing rigging, usually at the lower end.


Bow The forward part of the vessel. The starboard or port bows are the area on that side abaft the stem.


Bower anchor Main anchor.


Bowsprit A spar extending forward from the bow from which a jib is set.


Broaching Swinging sideways out of control in a strong following wind or sea.


Bulldog grip A specialised U-bolt used for making a temporary eye in wire rope.


Bunting Flags, or the light, traditional cloth used to make them.


Burgee Small, triangular flag flown from a stick at the masthead. It can swivel with the wind and is a useful indicator of wind direction. Usually, but not always, signifies membership of a specific yacht club.


Cable The rope or chain on the anchor.


Cap Shrouds Shrouds supporting the top of the mast athwartships. They often lead to the deck or chain plates via spreaders at the hounds.


Car A movable fairlead for a sheet. Typically found on a metal track on the side deck for the genoa sheets, or athwart the cockpit for the mainsheet.


Catenary The curve made by chain cable between the stem and the anchor.


Closehauled Sailing to windward steering to the sails rather than on a free course.


Coachroof The cabin top above the deck.


Coaming Permanent vertical protection around a hatch or cockpit.


Cockpit The area below deck level but open to the weather from which a small vessel – power or sail – is controlled.


Caulking The compound or other material forced between wooden planks to make them watertight.


Centre of effort The centre of an area of sail, from which its power can be thought to originate when considering its effect on manoeuvring.


Centreboard A board or metal plate lowered through the bottom of the hull to control leeway in a boat with no keel.


CEVNI An endorsement to the ICC (see below) permitting the holder to operate on European inland waterways. It is an acronym for Code European de Voies de la Navigation.


Chain Plate A metal plate set strongly into the deck or topsides to attach shrouds or stays.


Cheek block A block with one side flattened so it can be fitted permanently to a spar or to the deck.


Chine The angular joint where the topsides meet the bilge in a flat or v-bottomed boat.


Cleat A strong, universal fitting shaped like a truncated ‘T’ with long arms for securing ropes.


Clevis pin The removable strong steel pin (usually stainless) which carries the weight of a rigging terminal. Not to be confused with the split pin which secures it in place.


Clew The aft lower corner of a sail. The sheet is bent on here if the sail is not set on a boom.


MANUAL OF SEAMANSHIP | 157


Glossary


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