Specifications

hull. A shaft log permits the shaft to rotate while starboard or port tack .
......... ?"'-o ....... "'" ~.simultaneously preventing waterfrom entering the hull.
THWART - A seat or brace running laterally across a
SHEER The top of the hull's curvature at the deck line boat.
from the bow to the stern.
THWARTSHIPS - At right angles to the centerline.
SHEER STRAKE - The upper edge of the hull, imme-
diately below the deck. TILLER - A bar
or handle for turning a boat's rudder.
SHEET The tine usedto co nro I the forward
or athwart- TOPSIDE - To go up to the top deck.
ships movement of a sail.
TRANSOM - The stern cross-section of a square
SHEET BEND - A knot used to join tow ropes. sterned boat.
SHOAL -
An area of shallow water. TRANSVERSE - Across the vessel athwartships.
SILENCER A baffled chamber installed
in an exhaust TRIM - Fore and aft balance of a boat.
system to reduce the noise.
TROUGH -
1. The valley that exists between waves. 2.
SOLE - Term for deck.
A trough
is the opposite of a ridge in that it is an
elongated low-pressure area extending out from a low.
SPAR A general term for booms, masts. yards etc. A trough normally indicates unsettled weather.
SPRING L1NE- A pivot line used
in docking. undocking,
TUMBLE HOME - The opposite of flare. The shape of
or to prevent the boat from moving forward or astern
the hull as
it moves outboard going down from the
while made fast to a dock.
gunwale to the waterline .
. SIAB[30ARD - Looking forward, the entire right side
UNDERWAY - Vessel when not moored,
at anchor, or
,-" ,j boat from bow to stern.
aground .
..
STARBOARD BEAM The right-center of a boat.
V-BOTTOM - A hull with the bottom section
in the
shape of a "V."
STARBOARD BOW - When facing the bow, the front
right side.
V DRIVE - A drive system that has the output of the
engine facing forward and coupled to a transmission.
STARBOARD QUARTER When looking forward, the
The prop shaft is then coupled to the transmission.
right rear section of the boat.
WAKE - Moving waves, track or path that a boat leaves
STEERAGEWAY - The lowest speed at which a vessel behind
it when moving across the water.
can be controlled by the steering wheel.
WATER LINE - The line of the water on the hull when
STEM - The leading edge of a boat's hull.
the vessel
is afloat.
STERN The back of a boat. WATCH - A 4 hour duty period while at sea.
STRINGER - A fore and aft continuous member used to WAVES -Waves are periodic disturbances of the sea's
provide a vessel longitudinal strength. surface, caused'by wind, seaquakes, and the gravita-
tional pull of the moon and the sun.
STRUT -A propeller shaft support that is below the hull.
WAVE GRADIENT - A wave's slope
or angle from
SUM P - A pit
or well into which water is drained.
trough to crest.
SUPERSTRUCTURE - Deck houses and other struc- WAVE HEIGHT - From the bottom of a wave's trough
tures extending above the deck. to the top of the crest.
TACK To come about; the lower forward corner of a WEATH
ER DECK - A deck with no overhead protec-
sail; sailing with the wind on agiven side of the boat, as tion.
OMSB
CARVER
07