A diagram that indicates the average percentage of time that the wind blows from different directions, on a monthly or annual basis.

Confined Space Safety Practices.

A sail set forward of the foremast on the headstay; a foresail

Sea water used for ballast, let into the double bottom, or into a water-ballast tank, or trimming tanks.

A small wooden, metal or plastic insertion at the head of a mainsail.

A sailor's trunk; the intake between the ship's side and a sea valve.

Pyrheliometer based on the comparison of the heating of two identical metal strips, one exposed to radiation, the other to a joule effect.

A filter unit that combines three principles to filter out oil aerosols: 1) Direct interception - A sieving action, 2) Inertial impaction - Collision with filter media fibers, 3) Diffusion -Particles travel in a spiral motion, presenting an effective fron ...

Free Water

The condition of the atmosphere when the amount of water vapor present is the maximum possible at the existing temperature.

A letter of credit that requires the beneficiary to present only a draft or a receipt for specified funds before receiving payment.

An air heater in which air is blown over electric resistance heating coils.

A recording weight barometer.

A registered trademark of an agency of the state of Nebraska, for an automotive fuel containing a blend of 10 percent ethanol and 90 percent gasoline.

A passive solar heating system in which the sun warms a heat storage element, and the heat is distributed to the interior space by convection, conduction, and radiation.

(1) In good condition. (2) To adjust to proper shape or size.

One of the large square openings in the deck of a ship through which freight is hoisted in or out, and access is had to the hold.

The total of all deviations of a transducer's output from a specified straight line in a constant environment.

A curve that indicates the number of hours per year that specific wind speeds occur.