275 Performance
®
1.15
S
ection
1 • S
afety
20. n
auTical
T
erMs
Abeam
– object 90 degrees (
90°
) to center line on either side
of boat.
Abaft
– a point on a boat that is aft of another.
Aft
- toward the rear or stern of the boat.
Beam
- the maximum width of a boat.
Bilge
- the lowest part of the hull on the inside where fluids
collect.
Bow
- the forward part of a boat.
Bow Eye
- bolt with looped head mounted on extreme forward
part of bow, used for towing or tying up boat.
Bulkhead
- vertical partition in a boat
Chine
- meeting juncture of side and bottom of boat.
Chock
- deck fitting, used as a guide for mooring or anchor
lines. also, a wedge to stop wheels from rolling.
Cleat
- deck fitting with arms or horns to which lines are tied
or made fast.
Cockpit
- the open space from which a boat is operated.
Deck
- upper structure which covers the hull between
gunwales.
Downwind
- in the direction the wind is blowing toward
Draft
– depth of water required to float boat and its propulsion
system.
Fathom
- six feet.
Fenders
- rope or plastic pieces hung over the side to protect
the hull from chafing against a dock or another boat.
Freeboard
- height of exposed hull from water line to deck.
Ground tackle
- general term referring to anchors, anchor
lines, etc.
Gunwale
(pronounced gun'l) - where the hull and deck come
together; the "sides" of the boat in the cockpit area.
Hatch
- an opening in the deck to provide access below.
Head
- toilet or toilet area in a boat.
Headroom
- vertical distance between the deck and cabin or
canopy top.
Helm
- steering and controls console.
Hull
- the lower part of a boat beneath the deck and cockpit
that provides buoyancy to float the weight of the craft and its
load.
Keel
- the major longitudinal member of a hull; the lowest
external portion of a boat.
Knot
- unit of speed in nautical miles per hour.
Lee
- the side that is sheltered from the wind.
PFD
- Personal flotation Device; life jacket or preserver.
Port
- term designating left side of the boat when facing
forward.
Rudder
- Movable fixture at the stern used for steering.
Scupper
- hole permitting water to drain overboard from deck
or cockpit.
Sheer
- curve or sweep of the deck as viewed from the side.
Snub
- to check or tighten a line suddenly.
Starboard
- term designating right side of the boat.
Stern
- the rear (aft) end of a boat.
Stern drive
- outboard unit of an inboard/outboard (I/O) engine
installation.
Stringer
- longitudinal members fastened inside the hull for
additional structural strength.
Transom
- the rear part of the boat across the back, to which
the drive unit and swim platform are attached.
Upwind
- in the direction the wind is blowing from.
Wake
- disturbed water that a boat leaves behind as a result
of forward motion.
Windward
- toward the direction from which the wind is
blowing.
Summary of Contents for Performance 275
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