PURSUIT OS 375 Owner's Manual download pdf (Page 100)

A-4

Appendix A Glossary of Terms

OS 375

Pitching: The fore and aft rocking motion of

a boat as the bow rises and falls.

Pitch: The measure of the angle of a pro-

peller blade. Refers to the theoretical dis-

tance the boat travels with each revolution of

the propeller.

P. F. D : Personal Flotation Device.

Port: The left side of the boat when facing

the bow.

Porthole (port): The opening in the side of

a boat to allow the admittance of light and

air.

Propeller: A device having two or more

blades that is attached to the engine and

used for propelling a boat.

Propeller Shaft: Shaft which runs from the

back of the engine gear box, aft, through the

stuffing box, shaft log, struts, and onto which

the propeller is attached.

Pyrotechnic Distress Signals: Distress

signals that resemble the brilliant display of

flares or fireworks.

Raw Water Cooled: Refers to an engine

cooling system that draws sea water in

through a hull fitting or engine drive unit, cir-

culates the water in the engine, and then

discharges it overboard.

Reduction Gear: Often combined with the

reverse gear so that the propeller turns at a

slower rate than the engine.

Reverse Gear: Changes the direction of

rotation of the propeller to provide thrust in

the opposite direction for stopping the boat

or giving it sternway.

Roll: A boat’s sideways rotational motion in

rough water.

Rope Locker: A locker, usually located in

the bow of a boat, used for stowing the

anchor line or chain.

Rubrail: Railing (often rubber or hard plas-

tic) that runs along the boat’s sheer to pro-

tect the hull when coming alongside docks,

piers, or other boats.

Rudder: A moveable flat surface that is

attached vertically at or near the stern for

steering.

Sea anchor: An anchor that does not

touch the bottom. Provides drag to hold the

bow in the most favorable position in heavy

seas.

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 fittings and ahead of the piping

or hose running from the fittings.

Shaft Log: Pipe through which the propel-

ler shaft passes.

Sheer: The uppermost edge of the hull.

Sling: A strap which will hold the boat

securely while being lifted, lowered, or car-

ried.

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: Sufficient 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.

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