Secure hatches and loose objects both within the hull and on deck.

Steel disc, that is dogged down over a porthole to secure against breakage of the glass and to prevent light from showing through.

A lit navigational aid such as a lighthouse that can be used at night or in poor visibility.

A line used to tighten the leech of a sail, helping to create proper sail shape.

A small crane that projects over the side of the boat to raise or lower objects (such as smaller boats) from or to the water.

The part of the upper deck which is abaft the mainmast, or in that general location of a ship without one. The quarterdeck was normally reserved for officers.

A party named in an instrument as the beneficiary of the funds. Under letters of credit, the payee is either the drawer of the draft or a bank.

Sailors' term for an old ship that needed a lot of paint and repairs.

An air flow caused by a fan that draws air through the heat exchanger core in a uniform pattern to dissipate the sensible heat.

Goods floating on surface of sea after a wreck.

Is a gas that follows the perfect gas laws without deviation. There is no such thing, however it is the basis from which calculations are made and corrections applied.

Tan work shoes issued to U.S. Maritime Service trainees

Nautical name for an anchor. Originally, was a stone used as an anchor.

A device that removes solid contaminants, such as dirt or metal particles, from a liquid or gas (air is a gas), or that separates one liquid from another, or a liquid from a gas. The term filter describes the complete unit ... housing, filter element, int ...

A signboard attached to a daybeacon to convey navigational information presenting one of several standard shapes (square, triangle, rectangle) and colors (red, green, orange, yellow, or black). Daymarks usually have reflective material indicating the sha ...

An order to cease (stop).

As tight as can be pulled by hand.

(1) The rolled up part of a sail, tied with the reef lines, that is used to reduce sail area for heavy winds; To reduce the sail area. (2) A group of rocks or coral generally at a depth shallow enough to present a hazard to navigation.

Seaman's term for the period of work on board ship for which he has been paid in advance when signing on.

A keel that is narrow and deeper than a full keel.