WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

F

327 results

Flat

marine

A minor section of internal deck often without sheer or camber, also known as a platform.

Flat engine

energy

A flat engine, also known as a horizontally opposed engine, is a piston engine where the cylinders are located on either side of a central crankshaft.

Flat plate collectors

energy

Flat-plate collectors consist of an enclosure containing a dark-colored absorber plate with fluid circulation passageways, and a transparent cover to allow transmission of solar energy into the enclosure.

Flat welding position

marine

The welding position used to weld from the upper side of the joint at a point where the weld axis is approximately horizontal, and the weld face lies in an approximately horizontal plane.

Fleet angle

marine

The angle between the mooring line and a plane perpendicular to the axis of the winch drum.

Flettner rotor

marine

Unconventional ship propulsor based on the Magnus effect. Flettner rotor is a vertical cylinder rotated around its axis by a motor.

Flexible AC transmission system

energy

A flexible alternating current transmission system (FACTS) is a system composed of static equipment used for the alternating current (AC) transmission of electrical energy.

Flexible coupling

marine

To reduce vibration in a geared drive, the flexible coupling needs to be fitted between the engine and gearbox. It allows for some misalignment and controls the torque variations within the system.

Flexible pipelaying vessel SEVEN SEAS

marine

SEVEN SEAS has been designed by Merwede Shipyard in close co-operation with Subsea 7 and the Huisman-Itrec. The vessel is intended primarily for flexible pipelaying operations with an additional J-lay capability.

Flexible power plant

energy

Power plants utilising internal combustion engine generator sets providing rapid startup and shutdown being able to operate in multiple modes, from efficient baseload power production to dynamic system balancing in combination with, for example, wind or solar power.

Flexicycle power plant

energy

A gas, multi-fuel, or liquid fuel power plant in combination with a steam turbine combined cycle

Float voltage

energy

Float voltage is the voltage at which a battery is maintained after being fully charged to maintain that capacity by compensating for self-discharge of the battery.

Floatability

marine

The ability of the vessel to support any weight by means of the hydrostatic pressure acting on the underwater surfaces, giving rise to the buoyancy force.

Float–free launching

marine

A method of launching a survival craft whereby the craft is automatically released from a sinking ship and is ready for use, (SOLAS, Chapter III).

Floating booms

marine

Equipment employed in spill recovery. Floating booms are used not only for containment of oil but also for deflecting oil away from sensitive areas.

Floating Installation

marine

An offshore facility designed to provide hydrocarbon processing and/or hydrocarbon storage and offloading hydrocarbons.

Floating Installation Vessel

marine

A floating structure and the machinery, equipment, and systems necessary for safety, propulsion (if fitted), and auxiliary services.

Floating oil storage

marine

Oil stored on floating vessels. It has been the practice for oil to be stored in large laid-up oil tankers in order to set off the loss while the tankers are inactive.

Floating power plant

energy

Power plants that are constructed on barges or ships and can be towed or sailed to a location and connected to the power grid.

Floating production storage and offloading

energy

A floating production storage and offloading unit is a floating vessel used by the offshore oil and gas industry for the production and processing of hydrocarbons, and for the storage of oil.

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