In a wooden vessel, a plank in the hull springs when one of its ends breaks loose, and because of its shape bent to the curve of the hull, springs outwards beyond that curve. Such a plank is said to be sprung.

The operation of securing the ratlines to the shrouds.

A machine where a static pressure rise is obtained by allowing successive volumes of gas to be aspirated into and exhausted out of a closed space by means of the displacement of a moving member.

The portion of dry, full line pressure, compressed air taken from the drying side tower of a dual tower desiccant dryer system. Expanded to a very low pressure and passed across the wet desiccant to strip the moisture in the desiccant of the regenerating ...

On a square-rigged ship, a small sail set in light weather above the moonraker.

A measure of speed equal to one nautical mile (6076 feet) per hour.

To bale a boat, is to throw water out of her.

The property which has been recovered from a wrecked vessel, or the recovery of the vessel herself.

The part of a vessel's side between the after part of the main chains and the stern. The quarter of a yard is between the slings and the yard-arm. The wind is said to be quartering, when it blows in a line between that of the keel and the beam and abaft t ...

A common measure of ship carrying capacity. The number of tons (2240 lbs.) of cargo, stores and bunkers that a vessel can transport. It is the difference between the number of tons of water a vessel displaces "light" and the number of tons it displaces "w ...

Refrigerator ship; a vessel designed to carry goods requiring refrigeration, such as meat and fruit. A reefer ship has insulated holds into which cold air is passed at the temperature appropriate to the goods being carried.

A tanker is a bulk carrier designed to transport liquid cargo, most often petroleum products. Oil tankers vary in size from small coastal vessels of 1,500 tons deadweight, through medium-sized ship of 60,000 tons, to the giant VLCCs (very large crude carr ...

Technically, the ratio of length of anchor rode in use to the vertical distance from the bow of the vessel to the bottom of the water. Usually six to seven to one for calm weather and more scope in storm conditions.

Tight.

A small vessel with two masts and no tops. A fore-and-aft schooner has only fore-and-aft sails.A topsail schooner carries a square fore topsail, and frequently, also, opgallant sail and royal. There are some schooners with three masts. They lso have no to ...

Charge for conveying cargo by lighters or barges.

A hole cut in a vessel's deck, as, a hatchway. Also, a hole cut in any part of a vessel. To scuttle, is to cut or bore holes in a vessel to make her sink.

(Pronounced tay-cle.) A purchase, formed by a rope rove through one or more blocks.

The inclination of a mast from the perpendicular.

Equals gross tonnage minus deductions for space occupied by crew accommodations, machinery, navigation equipment and bunkers. It represents space available for cargo (and passengers). Canal tolls are based on net (registered) tonnage.