A unit of air cooling capacity; 12,000 Btu per hour.

A unit used in comparing freight earnings or expenses. The amount earned from the cost of hauling a ton of freight one mile.- The movement of a ton of freight one mile.

A measure of a vessel's interior volume; The weight or displacement of a ship.

A quantity of cargo normally expressed as a number of tons.

Deadweight, gross, net, displacement.

100 cubic feet.

Generally refers to freight handled.

on square-rigged ships, a platform at the masthead resting on the trestletrees and crosstrees. In addition to being a work platform, it extended the topmast shrouds to give additional support to the topmast.

A type of air circulation in a container. In top air units, air is drawn from the bottom of the container, filtered through the evaporator for cooling and then forced through the ducted passages along the top of the container. This type of airflow require ...

Too heavy aloft.

(1) The mast section next above the topmast and and below the royal mast. (2) The yard supported by that mast. (3) The third lowest square sail. It is stretched between the topgallant yard and the top yard.

Seamen who worked on the masts and yards of square-rigged ships.

(1) A line by which the end of a spar is hoisted or lowered. (2) A line that holds up the boom when it is not being used. (3) A line from the upper mast which controls the height of the spinnaker pole.

A winch, frequently unpowered, having rope storage capacity and used for topping and lowering a derrick boom while the boom is unloaded and for supporting it while it is supporting a load.

A means to increase the thermal efficiency of a steam electric generating system by increasing temperatures and interposing a device, such as a gas turbine, between the heat source and the conventional steam-turbine generator to convert some of the additi ...

A schooner with a square rigged sail on the forward mast.

Above the main deck.

Torsional moment or couple. It usually refers to the driving couple of a machine or motor.

The turning or twisting force generated by an electrical motor in order for it to operate.

A powered hinge.