A knot used to temporarily shorten a line.

The straight or curved line of the deck line; curvature of the lines of a vessel toward the bow and stern.

A sudden change. The longitudinal dip of the vessel's main deck.

A vertical longitudinal center line section of a vessel.

The topmost planking in the sides, next below the gunwale, often thicker than other planking.

A line that controls the angle of the sail in its relation to the wind; attached to the clew of a sail to adjust its trim (make the sail the proper shape to catch the wind).

The rope used to spread the clew of head sails and to control the boom of boom sails.

A hitch used to join two ropes. It can be used between lines of different diameters.

Pull the sail in by pulling on the sheet.

Let the sail out by easing the sheet.

Land ice, either afloat or on ground, that is composed of layers of sow that have become firm but have not turned to glacier ice.

The case of a block.

(1) The outside plating of a ship from stem to stern. (2) The outer casing of a block inside which the sheave revolves.

The casing of a block within which the sheave revolves.

An old and experienced seaman.

Saturday and Holidays Excluded.

Sundays, holidays excluded

A change in the wind direction.

Navy term meaning to change the arrangement of the colors (the national flag) upon getting under way or coming to moorings.

Temporarily placed longitudinal bulkheads used to prevent bulk cargo from shifting.