Four winns 378 VISTA Owner's Manual page 156

SILENCER - A baffled chamber installed in an exhaust
system to reduce the noise.
SOLE - Term for deck, cabin or cockpit floor.
SPAR - A general term for booms, masts, yards etc.
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.
STARBOARD - Looking forward, the right side of a boat.
STARBOARD BEAM - The right-center of a boat.
STARBOARD BOW - When facing the bow, the front
right side.
STARBOARD QUARTER - When looking forward, the
right rear section of the boat.
STEERAGEWAY - The lowest speed at which a vessel
can be controlled by the steering wheel.
STEM - The leading edge of a boat's hull.
STERN - The back of a boat.
STRINGER - A fore and aft continuous member used to
provide a vessel longitudinal strength.
STRUT - A propeller shaft support that is below the hull.
SUMP - A pit or well into which water is drained.
SUPERSTRUCTURE - Deck houses and other struc-
tures extending above the deck.
THWART - A seat or brace running laterally across a
boat.
THWARTSHIPS - At right angles to the centerline.
TILLER - A bar or handle for turning a boat's rudder, or
motor.
TOPSIDE - To go up to the top deck.
TRANSOM - The stern cross-section of a square sterned
boat.
TRANSVERSE - Across the vessel; athwartships.
TRIM - Fore and aft balance of a boat.
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TROUGH - 1. The valley that exists between waves. 2.
A trough is the opposite of a ridge in that it is an elon-
gated low-pressure area extending out from a low. A
trough normally indicates unsettled weather.
TUMBLE HOME - The opposite of flare. The shape of
the hull as it moves outboard going down from the gun-
wale to the waterline or chine.
UNDERWAY - Movement. Usually referring to a vessel
proceeding forward.
V-BOTTOM - A hull with the bottom section in the shape
of a "V."
V DRIVE - A drive system that has the output of the en-
gine facing forward and coupled to a transmission. The
prop shaft is then coupled to the transmission.
WAKE - Moving waves, track or path that a boat leaves
behind it when moving across the water.
WATER LINE - The line of the water on the hull when
the vessel is afloat.
WATCH - A 4 hour duty period while at sea.
WAVES - Waves are periodic disturbances of the sea's
surface, caused by wind, seaquakes, and the gravita-
tional pull of the moon and the sun.
WAVE GRADIENT - A wave's slope or angle from trough
to crest with respect to the horizon.
WAVE HEIGHT - From the bottom of a wave's trough to
the top of the crest.
WEATHER DECK - A deck with no overhead protection.
WET EXHAUST - This term refers to an exhaust sys-
tem where the cooling seawater is mixed with the ex-
haust gases just after the riser. This mixture is then
ejected through the drive or ports located in the transom
or hull sides.
WHARF - A man-made structure bounding the edge of
a dock and built along the shoreline.
WHIPPING - The act of wrapping the end of a piece of
rope with small line, tape or plastic to prevent it from
fraying.
WINDLASS - A device used to raise and lower the an-
chor.
Glossary
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