CAVITATION: a situation
when the propeller gets air or insufficient bite in the water and loses its
power. Can happen due to motor mounted too high, seas conditions and tight
CHOPPY WATER: Agitated
sea due to waves and wind coming from different directions.
COATING: interior and
exterior covering of fabric by a flexible sub- stance. The interior layer
assures air tightness, the exterior insures resistance to abrasion.
COCKPIT: the area of the
boat occupied by passengers. Floor drains provide for removing accumulated
CONE REINFORCEMENT: rigid
caps that provide protection for the ends of the buoyancy tubes.
measurement of the thread that constitutes the textile strength.
DECK: a horizontal
platform on which you may stand. Large boats may have numerous decks.
D-RING: A ring whose
metal part is D-shaped. Used especially when beaching and towing.
FLOOR: a surface on which
you may stand. Floors may be slats in fabric sleeves, interlocking or hinged
sections of wood, aluminum or composite materials, or fiberglass as in Ribs.
HAND RAILING: profited
grab rail for passengers to hold on to while navigating.
KEEL: (for a foldable
boat) the inflatable lengthwise part found under the boat, between the boat
bottom and the floor. The inflatable keel is a supplementary safety
LACING CUFF: a flap of
material (usually positioned on top of the tube) through which life lines
are lead. Lacing cuffs frequently act as upright reinforcements for the
LIFE LINE: line around
the boat to help passengers keep steady while navigating and when boarding.
MOTOR BRACKET: physical
part of the boat to which the engine is mounted.
MOTOR SHAFT: That part of
an engine that goes from below the motor head to the propeller. This height
is variable for a given horsepower, it can be short, long, or extra long.
circular or other shape which holds the oar and secures it to the buoyancy
tube permitting movement for rowing.
PLANE: Transitory phase
during which the boat goes from pushing the water at low speed to sliding
over it. Usually this phase is accompanied by porpoiseing as the boat
overtakes its own bow wave.
PRESSURE GAUGE: measuring
instrument that indicates the level of air pressure in the buoyancy tube.
RUBBING STRAKE: Composition
of resistant flexible lateral bands that protect the boat from damage caused
by rubbing (ie. against the dock).
SELF BAILER: device that
permits accumulated water to exit the boat, while not permitting water to
enter the boat. Usually, a plug wilt he used to close the self bailer when
the boat is at rest, anchored or not operational.
lengthwise bars that lock the floorboard elements in place when mounted
on the boat (foldable boats).
TILLER ARM: a lever with
controls used to steer and throttle an outboard motor when a remote helm
station is not used.
component of the hull of the boat on which the motor or motor bracket is
TRIM TABS/TRIM FLAPS: extension
of the bottom of the hull beyond the transom that aids in stability and
WATER EVACUATION PLUG: found
at lowest part of hull's stern. It permits water to evacuate from inside the
hull (boat out of the water).