Rocks & mirror
WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

M

253 results

Manhole

marine

A round or oval hole cut in decks, tanks, etc, for providing access. Low manholes are used usually. Flush manholes can be installed in cargo hold walls, or inner bottom.

Manifest, Cargo Manifest

marine

1. A list of all cargo on board. 2. A term used also for passengers list on cruise vessels, passenger ferries, etc.

Manifold

marine

A chamber functioning as a connection point for various valves and pipelines.

Manifold vacuum

energy

Manifold vacuum, or engine vacuum in an internal combustion engine is the difference in air pressure between the engine's intake manifold and Earth's atmosphere.

Manipulator

marine

A remotely-operated work arm.

Man-made climate forcings

energy

Man-made forcings include particle pollution (aerosols) that absorb and reflect incoming sunlight; deforestation, which changes how the surface reflects and absorbs sunlight; and the rising concentration of atmospheric carbon dioxide and other greenhouse gases, which decreases the rate at which heat is radiated to space.

Manned facility

marine

A facility with permanently-occupied living accommodations, or the one that requires continuous presence of personnel for more than 12 hours in successive 24- hour periods, (ABS).

Manning

marine

The number of personnel forming the ship crew.

Manoeuvrability of the ship, manoeuvring capability of ship

marine

Manoeuvring characteristics such as turning, yaw-checking, course-keeping and stopping abilities of the ship.

Manoeuvring characteristics

marine

The IMO resolution MSC.137(76) “Standards for Ship Manoeuvrability” identify the following characteristics: Inherent dynamic stability, Course-keeping ability, Initial turning/course-changing ability, Yaw checking ability, Turning ability...

Manoeuvring criteria

marine

The manoeuvrability of the conventional ship at full load is considered satisfactory if the following criteria are complied with: Turning ability, Initial turning ability, Yaw-checking and course-keeping abilities, Stopping ability.

Manoeuvring Information

marine

Pilot card, wheelhouse poster and manoeuvring booklet as required by the resolution A.601(15) “Provision and Display of Manoeuvring Information on Board Ships”.

Manoeuvring parameters

marine

According to IMO resolution MSC.137(76) “Standards for Ship Manoeuvrability” adopted on 4 December 2002.

Manoeuvring speed

marine

A vessel reduced rate of speed in restricted waters such as fairways, harbours, etc.

Manoeuvring stations

marine

Forecastle, stern, pilot boarding station, muster stations.

Manoeuvring tests

marine

The full-scale trials conducted in order to evaluate such performance of a ship as turning, yaw-checking, course-keeping and stopping abilities.

Marangoni effect

energy

The Marangoni effect (also called the Gibbs–Marangoni effect) is the mass transfer along an interface between two fluids due to a gradient of the surface tension.

Margin line

marine

A line drawn at least 76mm below the upper surface of the bulkhead deck at side, (SOLAS).

Margin plate

marine

The outboard strake of the inner bottom.

MARIN

marine

The Maritime Research Institute Netherlands was founded in 1929 as the Netherlands Ship Model Basin (NSMB) by the Dutch government and industry. The work was started in 1932, following completion of the deep water towing tank.

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