G-3
HYPOTHERMIA – A physical condition where the body loses heat
faster than it can produce it.
IN-LINE FUSE – A type of protective fuse located in the power wire
of a direct current (DC) circuit usually near the battery.
KEEL – The lowest portion of the boat; extends fore and aft along
the boat’s bottom.
LINE – All rope in a boat or on the dock is referred to as “line.”
LIST – Leaning or tilt of a boat toward the side.
MAKING WAY – Making progress through the water.
MARINE CHART – Seagoing maps showing depths, buoys,
navigation aids, etc.
MID SHIP (AMIDSHIP) – In the vicinity of the mid-length of a boat,
technically the exact half way between the bow and the stern.
MOORING – An anchor, chain, or similar device that holds a boat in
one location.
NAVIGATION AID – Recognizable objects on land or sea such as
buoys, towers or lights which are used to fix position to identify safe
and unsafe waters.
NMMA – National Marine Manufacturer’s Association
NO-WAKE SPEED – The speed at which a boat travels to produce an
imperceptible wake.
PFD – Personal flotation device.
PITOT TUBE – See SPEEDOMETER PICKUP TUBE.
PLANING HULL – A hull designed to lift, thereby reducing friction
and increasing efficiency.
PORPOISE – A condition in which the bow bounces up and down
caused by trimming the engine too far out.
PORT – (1) The left side of a boat when facing the bow. (2) A
destination or harbor.
PRIVILEGED BOAT – Term used for the boat with the right-of-way.
PROPELLER PITCH – Theoretical linear distance the propeller
would move ahead during one complete revolution of it were turning
with zero slippage.
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.
Glossary
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