LIE OFF—To heave to at some distance from shore. LIFE BUOY—A buoyant ring or some other floating device, except a life jacket or life belt, designed to support a person in the water. LIFE JACKET—A buoyant jacket designed to support a person in the water; a life belt fits only around the waist. LIFELINE—(1) In general, the lines erected around the edges of weather decks, specifically, the topmost line. From top to bottom, the lines are named lifeline, housing line, and foot rope. LIGHTEN SHIP—To  make  a  ship  lighter  by removing weight. LIGHT SHIP—The act of dispensing with blackout precautions. LINE—Any rope that isn’t wire rope. LINNER BOTTOM—The inside bottom in a system of double bottoms. LOG—(1) A ship’s speedometer. (2) The act of a ship in making a certain speed, as “The ship logged 20 knots.” (3) Book or ledger in which data or events that occurred during a watch is recorded. LOOK ALIVE—Admonishment meaning “be alert” or “move faster.” LOOKOUT—Person stationed topside as a formal watch who reports all objects sighted and sounds heard to the OOD. LOOM—The glow seen in the sky from a light that’s below the horizon. LUBBER’S LINE—Line engraved on the inside of a compass bowl, representing the ship’s head, by which the ship’s course is steered. LUCKY BAG—Locker, under the charge of the master-at-arms, used to stow gear found adrift and deserters’ effects. MAGAZINE—Compartment used for stowage of ammunition. MAGNETIC BEARING—The direction of the object measured on a magnetic compass. MAIN DECK—The uppermost complete deck. MAINMAST—Second mast aft from the bow. MAN—To assume a station, as to man a gun. MAN-O-WAR—See COMBATANT SHIP. MARLINE—Two-strand, left-laid, tarred hemp. MARLINSPIKE—Tapered steel tool used to open the strands of wire for splicing. MARLINESPIKE SEAMANSHIP—The art of caring for and handling all types of line and wire. MASTER-AT-ARMS—A member of a ship’s police department. MASTHEAD LIGHT—A 20-point, white running light located in the fore part of the ship. May or may not be on the foremast. MATE—A shipmate; another Sailor. MEET HER—Slow the swing of a ship by putting on opposite rudder. MESS—(1) Meal. (2) Place where meals are eaten, as mess hall. (3) A group of personnel who take meals together, as the officers’ mess. MESSENGER—(1) A line used to haul another heavier line across an intervening space. (2) One who delivers messages. MIDWATCH—The watch that begins at 0000 and ends at 0400. MIND YOUR RUDDER—An order to the helmsman to steer the proper course. MONKEY FIST—A complicated knot worked into the end of a heaving line to provide weight. MOOR—(1) To anchor, using two anchors. (2) To make fast to a mooring buoy. (3) To make fast to a pier or another ship. MOORING BUOY—A large, anchored float a ship may moor to. MORNING WATCH—The 0400 to 0800 watch. MOTOR WHALEBOAT—A double-ended power- boat. MUSTER—(1) A roll call. (2) The act of assembling for a roll call. NEST—(1) Two or more boats stowed one within the other. (2) Two or more ships moored alongside each other. NOTHING TO THE RIGHT (LEFT)—Order given to the helmsman not to allow the ship to come to right (left) of the course because of some danger lying on that side of the course. AI-8