The officer on board responsible for the navigation of the ship.

A system by which an object such as a compass is suspended so that it remains horizontal as the boat heels.

40 cubic feet.

Are categorized as internal or external heat reactivated. Internal type - Process air enters the dryer through the inlet piping, is then dried as it passes through the desiccant bed, and discharges through the outlet piping as dry air. Regeneration of the ...

A measurement of vacuum or pressure that is used to measure the airflow restriction.

An object that might not allow safe operation. A group of rocks just under the water or a submerged wreck could be a navigational hazard.

Old and experienced seaman.

Landfall. To reach shore.

Land

In charge of twelve to four watch. Ships navigation officer. Keeps charts (maps) up to date and monitors navigation equipment on bridge.

A rope passed round a man in the chains, while sounding.

(1) The alternate rise and fall of the bow of a vessel proceeding through waves; also called hobby horsing (2) The theoretical distance advanced by a propeller in one revolution. (3) Tar and resin used for caulking between the planks of a wooden vessel.

A trade arrangement in which goods are shipped to a foreign buyer without guarantee of payment.

Old three-masted trading vessel which was square-rigged on the fore and main masts, and lateen rigged on the mizzen mast. Similar to the Caravel, but larger and more robust.

Self Contained underwater Breathing Apparatus - see Aqualung.

Any object that a navigator may use to find his position, such as permanent land or sea markers, buoys, radiobeacons, and lighthouses.

The time allotted to a man to stand at the helm.

Short pieces of line fastened to the sail at reef points, used for tying a reef to reduce sail area. The reef line will pass through reef cringles, which will become the new tack and clew of the reefed sail.

An order given to take hold of a rope and pull.

A sailboat with its bow pointed directly into the wind, preventing the sails from filling properly and stopping the boat. It can be very difficult to get a boat that is in irons back under sail. also known as "In Stays".