An automatic pressure relieving device actuated by the static pressure upstream of the device, which opens in proportion to the increase in pressure over the opening pressure.

Abbreviation for the pressure, temperature, and humidity data obtained by a radiosonde observation.

Electronic Chart Display and Information SystemBased on vectorial representation of features, this system is the best available as it can be coupled to many other devices. Unfortunately since the availability of GPS positioning many hydrographic informati ...

A graphical plot or representation the current and voltage output of a solar photovoltaic cell or module as a load on the device is increased from short circuit (no load) condition to the open circuit condition; used to characterize cell/module performanc ...

Is a single shaft, positive displacement rotary compressor.

A company which is owed money by trade debtors faces the risk of slow payment or default on those.

is the ratio of the actual velocity at a given point to the velocity of sound in the same gas at the conditions existing at this point. These are known as local conditions.

An instrument that uses radio waves to communicate with other vessels. VHF very high frequency - radios are common for marine use, but are limited in range. Single Side Band SSB - radios have longer ranges.

A wood or fiber cover placed around such containers as cans and bottles.

All the various sails carried on board a yacht.

To attempt to contact another boat or shore, either by voice or radio.

A type of radiant heating system where the building floor contains channels or tubes through which hot fluids such as air or water are circulated. The whole floor is evenly heated. Thus, the room heats from the bottom up. Radiant floor heating eliminates ...

An inert gaseous element.

When the terms and conditions of a charter party have been agreed, except few minor details.

The highest energy band in a semiconductor that can be filled with electrons.

An object designed to increase the radio reflectivity of a boat so that it is more visible on radar. Many small boats are made with fiberglass and other materials that do not reflect radar very well on their own.

[meaning]

See R-Value.

Abbreviation for precipitation-evaporation quotient.

Measuring point for compressor acceptance test. Pressure at the compressor outlet flange.