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PORT – (1) The left side of a boat when facing the bow. (2) A destina-
tion or harbor.
PRIVILEGED BOAT – Term used for the boat with the right-of-way.
PROPELLER - A mechanical device for propelling a boat, consisting
of a revolving shaft with two or more broad, angled blades.
RIGHT-OF-WAY – Term for the boat that has priority in meeting or
crossing situations. The stand on or privileged boat.
RUB RAIL – The rubber extrusion that is fastened over the hull and
deck joint. The rub rail wraps all the way around the deck and hull.
RUDDER – A vertical plate or board used for steering the boat.
RUNNING LIGHTS - Also called navigation lights. Lights required for
operating a boat between sun-down and sun-up. These include two
navigational lights: red (port) and green (starboard), and one white
all-around or mast light.
SLIP – The linear distance between the pitch (or advance) of the
propeller and the actual distance it moves through the water.
STAND ON BOAT – Term for the boat that must maintain course and
speed in meeting or crossing situations. The privileged boat.
STARBOARD – The right side of a boat when looking toward the bow.
STERN – The aft or rear end of a boat.
STOW – To store cargo o of the deck usually in designated storage
compartments.
STRINGER – Fiberglass reinforcements under the floor that stien
the hull bottom.
SURGE BRAKES – A type of trailer braking system designed to auto-
matically actuate when the tow vehicle’s brakes are applied.
TRANSDUCER – The unit that sends/receives signals from the
depth sounder.
TRANSOM – The transom is the transverse, vertical section that
makes up the rear, or stern of a boat directly opposite the bow.
UNDERWAY – A boat in motion; i.e., not moored or anchored.
USCG – United States Coast Guard.
VISUAL DISTRESS SIGNAL – A device used to signal the need for
assistance such as flags, lights or flares.
WAKE – The waves that a boat leaves behind when moving through
the water.
WAKE SHAPING DEVICE - Devices that alter the flow of water to
change a wake’s size and shape.
WATERLINE – The line of the water’s edge when the boat is afloat.
WATERWAY – A navigable body of water.
WETTED SURFACE – The area of the hull under the water line and
any underwater or running gear mounted to the hull or transom.
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