150
Glossary of Terms
Scupper: An opening in the hull side or transom
of the boat through which water on deck or in the
cockpit is drained overboard.
Seacock: Safety valves installed just inside the
thru-hull ttings and ahead of the piping or hose
running from the ttings.
Shaft Log: Pipe through which the propeller
shaft passes.
Sheer: The uppermost edge of the hull.
Sling: A strap which will hold the boat securely
while being lifted, lowered or carried.
Slip: A boat’s berth between two pilings or piers.
Sole: The deck of a cockpit or interior cabin.
Spring Line: A line that leads from the bow aft
or from the stern forward to prevent the boat from
moving ahead or astern.
Starboard: The right side of a boat when facing
the bow.
Steerageway: Sufcient speed to keep the boat
responding to the rudder or drive unit.
Stem: The vertical portion of the hull at the bow.
Stern: The rear end of a boat.
Stow: To pack away neatly.
Stringer: Longitudinal members fastened inside
the hull for additional structural strength.
Strut: Mounted to the hull which supports the
propeller shaft in place.
Strut Bearing: See “cutlass bearing.”
Stufng Box: Prevents water from entering at
the point where the propeller shaft passes through
the shaft log.
Superstructure: Something built above the
main deck level.
Swamps: When a boat lls with water from over
the side.
Swimming Ladder: Much the same as the
boarding ladder except that it extends down into
the water.
Taffrail: Rail around the rear of the cockpit.
Thru-hull: A tting used to pass uids (usually
water) through the hull surface, either above or
below the waterline.
Topsides: The side skin of a boat between the
waterline or chine and deck.
Transom: A at stern at right angles to the keel.
Travel Lift: A machine used at boat yards to hoist
boats out of and back into the water.
Trim: Refers to the boat’s angle or the way it is
balanced.
Trough: The area of water between the crests
of waves and parallel to them.
Twin-Screw Craft: A boat with two propellers
on two separate shafts.
Underway: When a boat moves through the
water.
Wake: Disrupted water that a boat leaves
astern as a result of its motion.
Wash: The ow of water that results from the
action of the propeller or propellers.
Waterline: The plane of a boat where the surface
of the water touches the hull when it is aoat on
even keel.
Watertight Bulkhead: Bulkheads secured so
tightly so as not to let water pass.
Wharf: A structure generally parallel to the shore.
Working Anchor: An anchor carried on a boat
for most normal uses. Refers to the anchor used
in typical anchoring situations.
Windlass: A winch used to raise and lower the
anchor.
Windward: Toward the direction from which the
wind is coming.
Yacht Basin: A protected facility primarily for
recreational small craft.
Yaw: When a boat runs off her course to either
side.
To Next Page
Loading...
