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Nautical Words
| Question | Answer |
|---|---|
| abaft | toward or at the stern of a ship; further aft |
| affreightment | hiring of a vessel |
| afterdeck | deck behind a ship's bridge |
| afterguard | men who work the aft sails on the quarterdeck and poop deck |
| ahull | with sails furled and helm lashed to the lee-side |
| amidships | midway between the bow and stern of a ship |
| astern | at the stern of a ship |
| backstay | stay extending from ship's mastheads to the side of the ship |
| ballaster | one who supplies ships with ballast |
| bargemaster | owner of a barge |
| bee | hardwood on either side of bowsprit through which forestays are reeved |
| belay | to secure a rope by winding on a pin or cleat |
| bilge | lower point of inner hull of a ship |
| binnacle | case in which a ship's compass is kept |
| bitts | posts mounted on a ship for fastening ropes |
| bluepeter | blue flag with white square in centre used as ship's signal |
| boatswain | ship's crewmember in charge of equipment and maintenance |
| bobstay | rope used on ships to steady the bowsprit |
| bollard | short post on a wharf or ship to which ropes are tied |
| boltrope | strong rope stitched to edges of a sail |
| bosun | boatswain |
| bottomry | using the ship as collateral to finance a sea voyage |
| bow | front of a ship |
| bower | anchor carried at bow of a ship |
| bowline | rope used to keep weather edge of a sail taut |
| bowsprit | spar that extends at bows of a ship |
| brails | ropes on edge of sail for hauling up |
| bream | to clean a ship's bottom by burning off seaweed |
| bulwark | the side of a ship above the deck |
| bumpkin | spar projecting from stern of ship |
| bunt | middle of sail, fish-net or cloth when slack |
| buntline | rope attached to middle of square sail to haul it up to the yard |
| burgee | small ship's flag used for identification or signalling |
| cable | heavy rope or chain for mooring a ship |
| cabotage | shipping and sailing between points in the same country |
| camber | slight arch or convexity to a beam or deck of a ship |
| capstan | upright device for winding in heavy ropes or cables |
| careen | to turn a ship on its side in order to clean or repair it |
| cathead | projection near the bow of a ship to which anchor is secured |
| chine | the intersection of the middle and sides of a boat |
| chock | metal casting with curved arms for passing ropes for mooring ship |
| clew | corner of sail with hole to attach ropes |
| coaming | raised edge around ship's hatches to keep water out |
| cocket | official shipping seal; customs clearance form |
| cofferdam | narrow vacant space between two bulkheads of a ship |
| cog | single-masted, square-sailed ship with raised stern |
| companionway | stairs from upper deck of ship to lower deck |
| cordage | ropes in the rigging of a ship |
| cringle | loop at corner of sail to which a line is attached |
| crosstrees | horizontal crosspieces at a masthead used to support ship's mast |
| davit | device for hoisting and lowering a boat |
| deadeye | rounded wooden block with hole used to set up ship's stays |
| deadwood | timbers built into ends of ship when too narrow to permit framing |
| demurrage | delay of vessel's departure or loading with cargo |
| dodger | shield against rain or spray on a ship's bridge |
| dogwatch | a short, evening period of watch duty on a ship |
| downhaul | rope for holding down or hauling down a sail or spar |
| dromond | large single-sailed ship powered by rowers |
| dyogram | ship's chart indicating compass deflection due to ship's iron |
| earing | line for fastening corner of a sail to the gaff or yard |
| ensign | large naval flag |
| escutcheon | part of ship's stern where name is displayed |
| fairlead | ring through which rope is led to change its direction without friction |
| fardage | wood placed in bottom of ship to keep cargo dry |
| fiddley | iron framework around hatchway opening |
| figurehead | ornament or (usually female) bust attached to the bow of a ship |
| flagstaff | flag pole at stern of a ship |
| fluke | part of an anchor that fastens in the ground |
| forebitt | post for fastening cables at a ship's foremast |
| forecabin | cabin in fore part of ship |
| forecastle | short raised deck at fore end of ship; fore of ship under main deck |
| forefoot | foremost end of ship's keel |
| foremast | mast nearest the bow of a ship |
| foresail | lowest sail set on the foremast of square-rigged ship |
| forestay | stay leading from the foremast to the bow of a ship |
| frap | to draw a sail tight with ropes or cables |
| freeboard | distance between waterline and main deck of a ship |
| futtock | rib of a ship |
| gaff | spar on which head of fore-and-aft sail is extended |
| gaff-topsail | triangular topsail with its foot extended upon the gaff |
| gangway | either of the sides of the upper deck of a ship |
| garboard | plank on a ship’s bottom next to the keel |
| genoa | large jib that overlaps the mainsail |
| grapnel | small anchor used for dragging or grappling |
| groundage | a charge on a ship in port |
| gudgeon | metal socket into which the pintle of a boat's rudder fits |
| gunnage | number of guns carried on a warship |
| gunwale | upper edge of the side of a ship |
| gybe | to swing a sail from one side to another |
| halyard | rope or tackle for hoisting and lowering sails |
| hank | series of rings or clips for attaching a jib or staysail to a stay |
| hawse | distance between ship's bow and its anchor |
| hawsehole | hole for ship's cable |
| hawser | large rope for mooring or towing a ship |
| headsail | sail set forward of the foremast of a ship |
| helm | ship's steering wheel |
| holystone | sandstone material used to scrape ships' decks |
| inboard | inside the line of a ship's bulwarks or hull |
| jack | ship's flag flown from jack-staff at bow of vessel |
| jack-block | pulley system for raising topgallant masts |
| jack-cross-tree | single iron cross-tree at head of a topgallant mast |
| jackstaff | short staff at ship's bow from which the jack is hoisted |
| jackstay | iron or wooden bar running along yard of ship to which sails fastened |
| jackyard | spar used to spread the foot of a gaff-topsail |
| jib | small triangular sail extending from the head of the foremast |
| jibboom | spar forming an extension of the bowsprit |
| jibe | to change a ship's course to make the boom shift sides |
| jurymast | mast erected on ship in place of one lost |
| kedge | small anchor to keep a ship steady |
| keelhaul | to punish by dragging under keel of ship |
| keelson | lengthwise wooden or steel beam in ship for bearing stress |
| kentledge | pig-iron used as ballast in ship's hold |
| lagan | cargo jettisoned from ship but marked by buoys for recovery |
| lanyard | rope or line for fastening something in a ship |
| larboard | left side of a ship |
| lastage | room for stowing goods in a ship |
| lateen | triangular sail rigged on ship's spar |
| laveer | to sail against the wind |
| lazaret | space in ship between decks used for storage |
| leeboard | wood or metal planes attached to hull to prevent leeway |
| leech | a vertical edge of a square sail |
| loxodograph | device used to record ship's travels |
| luff | windward side of a ship; forward edge of fore-and-aft sail |
| lugsail | four-sided sail bent to an obliquely hanging yard |
| lutchet | fitting on ship's deck to allow mast to pivot to pass under bridges |
| mainmast | sailing ship's principal mast |
| mainsail | principal sail on a ship's mainmast |
| mainsheet | rope by which mainsail is trimmed and secured |
| mainstay | stay that extends from the main-top to the foot of the foremast |
| manrope | rope used as a handrail on a ship |
| martingale | lower stay of rope used to sustain strain of the forestays |
| mizzen | three-masted vessel; aft sail of such a vessel |
| mizzenmast | mast aft or next aft of the mainmast in a ship |
| moonraker | topmost sail of a ship, above the skyscraper |
| oakum | old ropes untwisted for caulking the seams of ships |
| orlop | lowest deck in a ship having four or more decks |
| outhaul | rope used to haul a sail taut along a spar |
| outrigger | spar extended from side of ship to help secure mast |
| painter | rope attached to bow of a boat to attach it to a ship or a post |
| pallograph | instrument measuring ship's vibration |
| parrel | band by which a yard is fastened to a mast |
| patroon | captain of a ship; coxswain of a longboat |
| poop | enclosed structure at stern of ship above main deck |
| port | when facing forward, the left side of a shift |
| primage | fee paid to loaders for loading ship |
| purser | ship's officer in charge of finances and passengers |
| quarterdeck | part of ship's deck set aside by captain for ceremonial functions |
| quartering | sailing nearly before the wind |
| rake | the inclination of a mast or another part of a ship |
| ratline | small rope forming a rung of a rope ladder on a ship |
| reef | to reduce area of a sail by rolling or folding part of it |
| reeve | to pass a rope through a ring |
| roach | curved cut in edge of sail for preventing chafing |
| roband | piece of yarn used to fasten a sail to a spar |
| rostrum | spike on prow of warship for ramming |
| rowlock | contrivance serving as a fulcrum for an oar |
| royal | small sail on royal mast just above topgallant sail |
| scud | to sail swiftly before a gale |
| scupper | hole allowing water to drain from ship’s deck |
| scuttlebutt | cask of drinking water aboard a ship; rumour, idle gossip |
| scuttles | portholes on a ship |
| sheer | fore-and-aft curvature of a ship from bow to stern |
| shrouds | ropes supporting the mast of a ship |
| sidelight | coloured lights on side of a ship under way at night |
| skeg | part of ship connecting the keel with the bottom of the rudderpost |
| skysail | sail above the royal sail |
| skyscraper | triangular sail on a ship above the royal |
| slipway | ramp sloping into water for supporting a ship |
| snotty | naval midshipman |
| spanker | sail on the mast nearest the stern of a square-rigged ship |
| spar | any ship's mast, boom, yard, or gaff |
| spinnaker | large triangular sail opposite the mainsail |
| spirketting | inside planking between ports and waterways of a ship |
| sponson | platform jutting from ship’s deck for gun or wheel |
| sprit | spar crossing a fore-and-aft sail diagonally |
| spritsail | sail extended by a sprit |
| starboard | when facing forward, the right side of a ship |
| starbolins | sailors of the starboard watch |
| stay | large rope used to support a mast |
| staysail | fore-and-aft sail hoisted on a stay |
| steeve | to set a ship's bowsprit at an upward inclination |
| stemson | supporting timber of a ship |
| stern | back part of a ship |
| sternpost | main member at stern of a ship extending from keel to deck |
| sternway | movement of a ship backwards |
| stevedore | dock worker who loads and unloads ships |
| stokehold | ship’s furnace chamber |
| strake | continuous band of plates on side of a ship |
| stunsail | light auxiliary sail to the side of principal sails |
| supercargo | ship's official in charge of business affairs |
| taffrail | rail round the stern of a ship |
| thole | pin in the side of a boat to keep oar in place |
| tiller | handle or lever for turning a ship's rudder |
| timberhead | top end of ship's timber used above the gunwale |
| timenoguy | rope stretched from place to place in a ship |
| topgallant | mast or sail above the topmast and below the royal mast |
| topmast | ship's mast above the lower mast |
| topsail | ship's sail above the lowermost sail |
| tranship | to transfer from one ship to another |
| transire | ship's customs warrant for clearing goods |
| transom | transverse timbers attached to ship's sternpost |
| treenail | long wooden pin used to fix planks of ship to the timbers |
| trice | to haul in and lash secure a sail with a small rope |
| trunnel | wooden shipbuilding peg used for fastening timbers |
| trysail | ship's sail bent to a gaff and hoisted on a lower mast |
| tuck | part of ship where ends of lower planks meet under the stern |
| turtleback | structure over ship’s bows or stern |
| unreeve | to withdraw a rope from an opening |
| walty | inclined to tip over or lean |
| wardroom | quarters for ship's officers |
| washboard | broad thin plank along ship's gunwale to keep out sea water |
| watching | fully afloat |
| waveson | goods floating on the sea after a shipwreck |
| wear | to turn a ship's stern to windward to alter its course |
| weatherboard | weather side of a ship |
| weatherly | able to sail close to the wind with little leeway |
| wheelhouse | shelter where ship’s steering wheel kept |
| whipstaff | vertical lever controlling ship’s rudder |
| windbound | hindered from sailing by contrary winds |
| windlass | winch used to raise a ship's anchor |
| xebec | small three-masted pirate ship |
| yard | tapering spar attached to ship's mast to spread the head of a square sail |
| yardarm | either end of the yard of a square-rigged ship |
| yawl | ship’s small boat; sailboat carrying mainsail and one or more jibs |
| zabra | small Spanish sailing vessel |
| V BOTTOM | A hull with the bottom section in the shape of a "V". |
| YACHT | A pleasure vessel, a pleasure boat; in American usage the idea of size and luxury is conveyed, either sail or power. |
| LATITUDE | The distance north or south of the equator measured and expressed in degrees. |
| LAZARETTE | A storage space in a boat's stern area. |
| MARLINSPIKE | A tool for opening the strands of a rope while splicing. |
| YAW | To swing or steer off course, as when running with a quartering sea. |
| JACOBS LADDER | A rope ladder, lowered from the deck, as when pilots or passengers come aboard. |
| WAY | Movement of a vessel through the water such as headway, sternway or leeway. |
| BATTEN DOWN | Secure hatches and loose objects both within the hull and on deck. |
| WATERLINE | A line painted on a hull which shows the point to which a boat sinks when it is properly trimmed (see BOOT TOP). |
| WAKE | Moving waves, track or path that a boat leaves behind it, when moving across the waters. |
| CABIN | A compartment for passengers or crew. |
| CAPSIZE | To turn over. |
| CAST OFF | To let go. |
| CATAMARAN | A twin-hulled boat, with hulls side by side. |
| SATELLITE NAVIGATION | A form of position finding using radio transmissions from satellites with sophisticated on-board automatic equipment. |
| FATHOM | Six feet. |
| GALLEY | The kitchen area of a boat. |
| GANGWAY | The area of a ship's side where people board and disembark. |
| HARD CHINE | An abrupt intersection between the hull side and the hull bottom of a boat so constructed. |
| HATCH | An opening in a boat's deck fitted with a watertight cover. |
| NAVIGATION RULES | The regulations governing the movement of vessels in relation to each other, generally called steering and sailing rules. |
| NAVIGATION | The art and science of conducting a boat safely from one point to another. |
| NAUTICAL MILE | One minute of latitude; approximately 6076 feet |
| ABAFT | Toward the rear (stern) of the boat. Behind. |
| ABEAM | At right angles to the keel of the boat, but not on the boat. |
| ABOARD | On or within the boat. |
| EBB | A receding current. |
| ABOVE DECK | On the deck (not over it |
| ABREAST | Side by side; by the side of. |
| SCOPE | Technically, the ratio of length of anchor rode in use to the vertical distance from the bow of the vessel to the bottom of the water. Usually six to seven to one for calm weather and more scope in storm conditions. |
| SCUPPERS | Drain holes on deck, in the toe rail, or in bulwarks or (with drain pipes) in the deck itself. |
| SCREW | A boat's propeller. |
| ADRIFT | Loose, not on moorings or towline. |
| HEAD | A marine toilet. Also the upper corner of a triangular sail. |
| SEAWORTHY | A boat or a boat's gear able to meet the usual sea conditions. |
| SEA ROOM | A safe distance from the shore or other hazards. |
| SEAMANSHIP | All the arts and skills of boat handling, ranging from maintenence and repairs to piloting, sail handling, marlinespike work, and rigging. |
| SEA COCK | A through hull valve, a shut off on a plumbing or drain pipe between the vessel's interior and the sea. |
| DEAD AHEAD | Directly ahead. |
| DEAD ASTERN | Directly aft. |
| DECK | A permanent covering over a compartment, hull or any part thereof. |
| LEE | The side sheltered from the wind. |
| SECURE | To make fast. |
| BELOW | Beneath the deck. |
| BEARING | The direction of an object expressed either as a true bearing as shown on the chart, or as a bearing relative to the heading of the boat. |
| LEEWAY | The sideways movement of the boat caused by either wind or current. |
| GEAR | A general term for ropes, blocks, tackle and other equipment. |
| BEAM | The greatest width of the boat. |
| JETTY | A structure, usually masonry, projecting out from the shore; a jetty may protect a harbor entrance. |
| LEEWARD | The direction away from the wind. Opposite of windward. |
| FENDER | A cushion, placed between boats, or between a boat and a pier, to prevent damage. |
| HEADING | The direction in which a vessel's bow points at any given time. |
| HEADWAY | The forward motion of a boat. Opposite of sternway. |
| HELM | The wheel or tiller controlling the rudder. HELMSPERSON |
| SET | Direction toward which the current is flowing. |
| KEEL | The centerline of a boat running fore and aft; the backbone of a vessel. |
| AFT | Toward the stern of the boat. |
| AGROUND | Touching or fast to the bottom. |
| THWARTSHIPS | At right angles to the centerline of the boat. |
| CHAFING GEAR | Tubing or cloth wrapping used to protect a line from chafing on a rough surface. |
| CHART | A map for use by navigators. |
| CHINE | The intersection of the bottom and sides of a flat or v-bottomed boat. |
| AHEAD | In a forward direction. |
| CHOCK | A fitting through which anchor or mooring lines are led. Usually U-shaped to reduce chafe. |
| SHIP | A larger vessel usually thought of as being used for ocean travel. A vessel able to carry a "boat" on board. |
| LINE | Rope and cordage used aboard a vessel. |
| TILLER | A bar or handle for turning a boat's rudder or an outboard motor. |
| PILOTING | Navigation by use of visible references, the depth of the water, etc. |
| DISPLACEMENT | The weight of water displaced by a floating vessel, thus, a boat's weight. |
| HITCH | A knot used to secure a rope to another object or to another rope, or to form a loop or a noose in a rope. |
| FIGURE EIGHT KNOT | A knot in the form of a figure eight, placed in the end of a line to prevent the line from passing through a grommet or a block. |
| MIDSHIP | Approximately in the location equally distant from the bow and stern. |
| GIVE-WAY VESSEL | A term used to describe the vessel which must yield in meeting, crossing, or overtaking situations. |
| TIDE | The periodic rise and fall of water level in the oceans. |
| PILING | Support, protection for wharves, piers etc.; constructed of piles (see PILE) |
| BITTER END | The last part of a rope or chain.The inboard end of the anchor rode. |
| BIGHT | The part of the rope or line, between the end and the standing part, on which a knot is formed. BILGE |
| PILE | A wood, metal or concrete pole driven into the bottom. Craft may be made fast to a pile; it may be used to support a pier (see PILING) or a float. |
| PIER | A loading platform extending at an angle from the shore. |
| DINGHY | A small open boat. A dinghy is often used as a tender for a larger craft. |
| WINDWARD | Toward the direction from which the wind is coming. |
| DISPLACEMENT HULL | A type of hull that plows through the water, displacing a weight of water equal to its own weight, even when more power is added. |
| AIDS TO NAVIGATION | Artificial objects to supplement natural landmarks indicating safe and unsafe waters. |
| FLOOD | A incoming current. |
| ALEE | Away from the direction of the wind. Opposite of windward. |
| ALOFT | Above the deck of the boat. |
| CLEAT | A fitting to which lines are made fast. The classic cleat to which lines are belayed is approximately anvil-shaped. |
| CLOVE HITCH | A knot for temporarily fastening a line to a spar or piling. |
| FLARE | The outward curve of a vessel's sides near the bow. A distress signal. |
| PLANING HULL | A type of hull shaped to glide easily across the water at high speed. |
| FLOORBOARDS | The surface of the cockpit on which the crew stand. |
| FLUKE | The palm of an anchor. |
| PLANING | A boat is said to be planing when it is essentially moving over the top of the water rather than through the water. |
| SLACK | Not fastened; loose. Also, to loosen. |
| AMIDSHIPS | In or toward the center of the boat. |
| INBOARD | More toward the center of a vessel; inside; a motor fitted inside a boat. |
| UNDERWAY | Vessel in motion, i.e., when not moored, at anchor, or aground. |
| KNOT | A measure of speed equal to one nautical mile (6076 feet) per hour. |
| INTRACOASTAL WATERWAY | ICW: bays, rivers, and canals along the coasts (such as the Atlantic and Gulf of Mexico coasts), connected so that vessels may travel without going into the sea. |
| ANCHORAGE | A place suitable for anchoring in relation to the wind, seas and bottom. |
| KNOT | A fastening made by interweaving rope to form a stopper, to enclose or bind an object, to form a loop or a noose, to tie a small rope to an object, or to tie the ends of two small ropes together. |
| DOCK | A protected water area in which vessels are moored.The term is often used to denote a pier or a wharf. |
| BOW | The forward part of a boat. |
| BOOT TOP | A painted line that indicates the designed waterline. |
| BOAT HOOK | A short shaft with a fitting at one end shaped to facilitate use in putting a line over a piling, recovering an object dropped overboard, or in pushing or fending off. |
| BOAT | A fairly indefinite term. A waterborne vehicle smaller than a ship. One definition is a small craft carried aboard a ship. |
| FOULED | Any piece of equipment that is jammed or entangled, or dirtied. |
| FORWARD | Toward the bow of the boat. |
| PORT | The left side of a boat looking forward. A harbor. |
| FOREPEAK | A compartment in the bow of a small boat. |
| FORE-AND-AFT | In a line parallel to the keel. |
| RODE | The anchor line and/or chain. |
| ROPE | In general, cordage as it is purchased at the store. When it comes aboard a vessel and is put to use it becomes line. |
| HOLD | A compartment below deck in a large vessel, used solely for carrying cargo. |
| FOLLOWING SEA | An overtaking sea that comes from astern. |
| DOLPHIN | A group of piles driven close together and bound with wire cables into a single structure. |
| COAMING | A vertical piece around the edge of a cockpit, hatch, etc. to prevent water on deck from running below. |
| MOORING | An arrangement for securing a boat to a mooring buoy or a pier. |
| LONGITUDE | The distance in degrees east or west of the meridian at Greenwich, England. |
| COURSE | The direction in which a boat is steered. |
| COIL | To lay a line down in circular turns. |
| COCKPIT | An opening in the deck from which the boat is handled. |
| BOW LINE | A docking line leading from the bow. |
| LOG | A record of courses or operation. Also, a device to measure speed. |
| SOLE | Cabin or saloon floor. Timber extensions on the bottom of the rudder. Also the molded fiberglass deck of a cockpit. |
| SOUNDING | A measurement of the depth of water. |
| TOPSIDES | The sides of a vessel between the waterline and the deck; sometimes referring to onto or above the deck. |
| BOWLINE | A knot used to form a temporary loop in the end of a line. |
| SPRING LINE | A pivot line used in docking, undocking, or to prevent the boat from moving forward or astern while made fast to a dock. |
| SQUALL | A sudden, violent wind often accompanied by rain. |
| SQUARE KNOT | A knot used to join two lines of similar size. Also called a reef knot. |
| TRANSOM | The stern cross-section of a square sterned boat. |
| BRIGHTWORK | Varnished woodwork and/or polished metal. |
| BRIDLE | A line or wire secured at both ends in order to distribute a strain between two points. |
| FREEBOARD | The minimum vertical distance from the surface of the water to the gunwale. |
| DRAFT | The depth of water a boat draws. |
| TRIM | Fore and aft balance of a boat. |
| GRAB RAILS | Hand-hold fittings mounted on cabin tops and sides for personal safety when moving around the boat. |
| PRIVELEGED VESSEL | A vessel which, according to the applicable Navigation Rule, has right-of-way (this term has been superseded by the term "stand-on"). |
| GROUND TACKLE | A collective term for the anchor and its associated gear. |
| BRIDGE | The location from which a vessel is steered and its speed controlled. "Control Station" is really a more appropriate term for small craft. |
| ASTERN | In back of the boat, opposite of ahead. |
| STANDING PART | That part of a line which is made fast.The main part of a line as distinguished from the bight and the end. |
| STAND-ON VESSEL | That vessel which has right-of-way during a meeting, crossing, or overtaking situation. |
| STARBOARD | The right side of a boat when looking forward. |
| STEM | The forward most part of the bow. |
| STERN | The after part of the boat. |
| STOW | To put an item in its proper place. |
| ATHWARTSHIPS | At right angles to the centerline of the boat; rowboat seats are generally athwart ships. |
| STERN LINE | A docking line leading from the stern. |
| HULL | The main body of a vessel. |
| GUNWALE | The upper edge of a boat's sides. |
| OUTBOARD | Toward or beyond the boat's sides. A detachable engine mounted on a boat's stern. |
| QUARTER | The sides of a boat aft of amidships. |
| QUARTERING SEA | Sea coming on a boat's quarter. |
| RUDDER | A vertical plate or board for steering a boat. |
| RUN | To allow a line to feed freely. |
| RUNNING LIGHTS | Lights required to be shown on boats underway between sundown and sunup. |
| CURRENT | The horizontal movement of water. |
| CUDDY | A small shelter cabin in a boat. |
| BURDENED VESSEL | That vessel which, according to the applicable Navigation Rules, must give way to the privileged vessel. The term has been superseded by the term "give-way". |
| BUOY | An anchored float used for marking a position on the water or a hazard or a shoal and for mooring. |
| BULKHEAD | A vertical partition separating compartments. |
| LUBBER'S LINE | A mark or permanent line on a compass indicating the direction forward parallel to the keel when properly installed. |
| OVERBOARD | Over the side or out of the boat. |
| AWEIGH | The position of anchor as it is raised clear of the bottom. |
| SWAMP | To fill with water, but not settle to the bottom. |