Rocks & mirror
WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

S

696 results

Strake

marine

A strip of plating used in the outer hull structure, decks or bulkheads; for example bilge strake, keel strake, sheer strake, etc.

Stranded asset

energy

Stranded assets are assets that have suffered from unanticipated or premature write-downs, devaluations or conversion to liabilities.

Stranded gas reserve

energy

A stranded gas reserve is a natural gas field that has been discovered, but remains unusable for either physical or economic reasons.

Stranding

marine

The placing or landing of a vessel on a beach, a submerged object or reef, whereby vessel is no longer fully afloat and free.

Stratigraphic trap

energy

In a stratigraphic trap, the geometry allowing the accumulation of hydrocarbons is of sedimentary origin and has not undergone any tectonic deformation.

Stratigraphy

energy

Stratigraphy is a branch of geology concerned with the study of rock layers (strata) and layering (stratification).

Stratum

energy

In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil, or igneous rock that was formed at the Earth's surface, with internally consistent characteristics that distinguish it from other layers.

Streamers

marine

Measuring cables towed by the seismic vessel.

Street light

energy

A street light, light pole, lamppost, street lamp, light standard or lamp standard is a raised source of light on the edge of a road or path.

Strength deck

marine

The deck that is designed as the uppermost part of the main hull longitudinal strength girder. The bottom shell plating sets up the lowermost part of this girder.

Strength of a structure

marine

Ability of the structure to withstand the loads imposed on it.

Stress

energy

Stress is a physical quantity that expresses the internal forces that neighbouring particles of a continuous material exert on each other

Stress concentration, stress raiser

marine

Any notch, crack, hole, corner, groove, attachment or other interruption to smooth flow of stress and strain in structure introduces a concentration of stress.

Stress corrosion cracking

energy

Stress corrosion cracking is the growth of crack formation in a corrosive environment.

Stress monitoring system, hull stress surveillance system

marine

Large tankers, bulk carriers or container vessels, where the hull girder stiff ness is relatively low compared to their size, and which need hull monitoring systems to measure the forces, motions and resulting stresses caused by the sea state.

Stress–strain curve

energy

A stress–strain curve for a material gives the relationship between stress and strain.

Stretcher

marine

A covered frame for carrying someone who is too injured or ill to walk.

Stringer

marine

1. A term applied to a fore-and-aft girder running along the side of a ship at the shell and also to the outboard strake of plating on any deck. 2. The side pieces of a ladder or staircase to which the treads and risers are fastened.

Stringer plate

marine

The outside strake of deck plating.

Stripe coat (painting)

marine

A coat used locally, before the first coat or between the first and the second coat, in locations where it is not easy to obtain the final thickness of paint by a simple application with gun.

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