The shape of the fore-body of a ship as it thrusts through the sea. A vessel with a slim bow is said to have a fine entry.

is the design (built-in) compression ratio for a rotary unit having this feature

Hauled out of the water for repairs or storage

On the land or aground.

Go to bed without undressing.

A concrete foundation with lateral supports which rests upon a number of steel springs. Designed to deal with disturbing frequencies in vibration isolation

A rotating fitting used to keep a line from tangling.

To enter a port or harbor

A control line that adjusts tension along the foot of the sail, pulling the clew away from the tack; used to maintain proper sail shape.

The top of a wave.

To put a narrow piece of canvas around it after it has been wormed, and before it has been served.

A disturbance of surface water by conflicting current or by winds.

The direction at right angles to a ship's heading or the line of her keel

A bearing 180

The dimensionless number obtained when the difference between maximum and minimum instantaneous shaft speeds during one period is divided by the arithmetic mean of these two.

Beneath the deck

Any point of sailing away from the wind.

A motor controller that regulates the air flow through an end plate into the motor to control the speed and power. A speed regulation device built into or attached externally.

To the bow of the boat, forward of the beam.

(1) When two or more boats tie up alongside each other. (2) Overlapping of edges of two ice-floes, so that one floe is partly supported by the other.