Rocks & mirror
WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

5803 results

marine

A bulk cargo-handling device consisting of a bucket which is hinged to open and close. It is open when lowered into the cargo and then closed and lifted out full.

marine

During normal operation, the engine speed is controlled by a governor which regulates the injected fuel quantity corresponding to the load. The governor shall prevent the engine from exceeding the rated speed by more than 15%.

marine

Emergency drive systems are typically installed in ships with geared medium-speed engines by connecting an electric motor to a pinion shaft in the gearbox (PTI) via a clutch. In normal use the motor serves as a power take-off (PTO) shaft generator.

marine

GRP cabinets weathertight to IP55 with a range of equipment to aid escape from enclosed spaces in the vessel under unusual circumstances, for instance...

marine

The removal of metal from a welded seam in order to make a back-run for a butt weld. Gouging is frequently employed in preference to grinding for the removal of large quantities of weld metal prior to repairs or modifications to the weld preparation.

marine

An integrated communication system which uses satellite and terrestrial radio communication to ensure that no matter the ship’s position in distress, assistance can be sent.

marine

Mandatory consumers, which after breakdown of the main energy supply, must be fed by the emergency energy supply.

marine

A valve with a spherically-shaped body enclosing the valve seat or disc. Liquid flow is arranged from the below to the above of the valve seat so that the upper chamber is not pressurized when the valve is closed.

marine

The ratio of the warming caused by a certain substance to the warming caused by a similar mass of carbon dioxide (the GWP of CO2 is defined to be 1,0). All GWP values are calculated over a 100-year time horizon.

marine

A satellite-based navigation system operated and maintained by the US Department of Defense. GPS consists of a constellation of 24 satellites providing worldwide, 24-hour, three dimensional (3D) coverage.

marine

A combination of thin fibres of glass in various forms which, when mixed with resin cures to produce a hard, strong and chemically inert material.

marine

Crushing for recycling is the sensible procedure for two reasons: incinerated or crushed glass cannot be discharged overboard; land-based facilities will not accept ash-contaminated glass for recycling.

marine

Glare is the sensation produced by luminance within the visual field that is sufficiently greater than the luminance to which the eyes are adapted causing annoyance, discomfort or loss of visual performance and visibility.

marine

A collective term for primary supporting structural members.

marine

These vessels operate on a site to detect the presence of any subsea hydrocarbon reservoirs. Geotechnical ships carry out corings, that is the picking up of seabed samples.

marine

The use of geophysical techniques – electric, gravity, magnetic, seismic or thermal – in the search for economically valuable hydrocarbons, mineral deposits or water supplies or to gather information for engineering projects.

marine

A sound signal of seven short blasts and one prolonged blast given with the vessel sound system.

marine

Operational and public correspondence traffic, other than distress, urgency and safety messages, conducted by radio (SOLAS).

marine

A ship with one or more decks, having ability to carry a variety of commodities in different forms such as boxed, palletized, refrigerated, and with the possibility to accommodate bulk materials such as grain.

marine

A vessel not equipped to load and discharge by its own means (without derricks or cranes).