PURSUIT OS 315 Owner's Manual download pdf (Page 99)

Glossary of Terms

A-5

Appendix A

OS 315

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.”

Stuffing Box: Prevents water from enter-

ing at the point where the propeller shaft

passes through the shaft log.

Superstructure: Something built above

the main deck level.

Swamps: When a boat fills 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 cock-

pit.

Thru-hull: A fitting used to pass fluids (usu-

ally 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 flat 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 propel-

lers 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 flow 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 afloat 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.

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