A shortening of the term, "Roll On/Roll Off." A method of ocean cargo service using a vessel with ramps which allows wheeled vehicles to be loaded and discharged without cranes.

To retire from a life at sea and settle ashore.

At or towards the stern or rear of a ship.

Marks of identification.

General name for a broad, flat-bottomed boat used in transporting cargo between a vessel and the shore. The distinction between a lighter and a barge is more in the manner of use than in equipment. The term "lighter" refers to a short haul, generally in c ...

When a vessel fills with water and sinks.

The direction and speed of the wind as it appears to those on board, relative to the speed and direction of the boat; combination of the true wind and the wind caused by the boat's movement through the water.

Is energy in transition and is defined in units of Force times Distance. Work cannot be done unless there is movement.

Toward the shore

The process of checking the accuracy of and adjusting the ship's magnetic compass.

A cylinder used to carry rotating machine parts, such as pulleys and gears, to transmit power or motion; such as a propeller shaft.

(1) The underside of the hull that sits in the water (2) The ocean floor

Special vessels employed in exploration for, development of or continuous production of, subsea oil and gas.

The curve (sag) of a rope, cable or chain hung between two points such as the anchor rode or towing line; the deeper the curve, the more catenary.

Same as not under command.

A movement where the load initiates at an origin rail ramp and terminates at a consignee's door.

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.

Also bosun, bos'n, bo's'n, and bo'sun, all of which are pronounced bosun. The highest unlicensed rating in the deck department who has immediate charge of all deck hands, oversees deck crew, maintenance and upkeep of the ship except for the engine room an ...

Go to bed without undressing.