Rocks & mirror
WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

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Rescue boat davits

marine

Usually hydraulic operated slewing or pivoting davits designed for launching and recovery of a fully-manned rescue boat against unfavourable conditions of trim of up to 10 degrees and a list of up to 20 degrees either way.

Rescue boat, Man Over Board (MOB) boat

marine

A davit-launched, motor-propelled light boat provided to perform man-overboard retrieval and raft marshalling duties.

Rescue co-ordination centre (RCC)

marine

Land-based authority conducting and co-ordinating search and rescue operations in a designated area.

Rescue team

marine

A group of crewmembers standing by in case of emergency in order to assist other teams in action if necessary.

Research and development

energy

Research and development (R&D, R+D), known in Europe as research and technological development (RTD), is the set of innovative activities undertaken by corporations or governments in developing new services or products and improving existing ones.

Research reactor

energy

Research reactors are nuclear reactors that serve primarily as a neutron source.

Research ships

marine

Specialized ships engaged in oceanographic research, marine exploration, offshore exploration and survey, fisheries and biological research, hydrography, mineral survey and meteorogical observations.

Reserve booking

energy

Oil and gas reserves are the main asset of an oil company.

Reserve buoyancy

marine

Enclosed spaces, which provide buoyancy in addition to that required by a vessel to float. It is always considered in the assignment of freeboard to a ship.

Reserve capacity

energy

The amount of additional generating capacity that can be provided by generators that are already connected to the power grid.

Reservoir

energy

Is an enlarged natural or artificial lake created using a dam to store water.

Reservoir fluids

energy

Fluids in an oil or gas reservoir are called reservoir fluids.

Residual stability

marine

The positive range of the righting lever curve after damage, with external heeling levers taken into account.

Residual-current device

energy

A ground fault circuit interrupter (GFCI), or Residual Current Device (RCD) is a type of circuit breaker which shuts off electric power when it senses an imbalance between the outgoing and incoming current.

Resilient mountings

marine

Machine supports which utilize springs or an elastomeric material to prevent the transmission of vibration to the supporting structure.

Resin

marine

A hard, brittle substance insoluble in water.

Resistance

energy

Electrical resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω).

Resistivity

energy

A measure of how strongly a material resists electrical current.

Resonance thickness measurement (RTM)

marine

A new thickness-measuring technique introduced by Det Norske Veritas. RTM sensor emits a spectrum of resonated sound waves which pass through the corroded steel.

Resonant converter

energy

A type of electric power converter that contains a network of inductors and capacitors called a "resonant tank", tuned to resonate at a specific frequency.

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