Denmark Fiskeskippereksamen af 1. grad foundations flashcards

26 cards. Read the term and the definition here. The deck at the top of this page is optional.

Relative motion

The motion of a target measured relative to own ship, useful for assessing the developing approach when the displayed reference frame is understood.

Speed over ground

The vessel’s movement relative to the earth, distinct from its speed through the surrounding water mass when current or other effects matter.

Parallel indexing

A radar monitoring method comparing a suitable fixed target with a planned index reference to observe cross-track relationships during a passage.

Safety contour

An operator-selected chart-depth boundary represented using the available electronic-chart contours, requiring appropriate vessel assumptions rather than guaranteeing all nearby water is safe.

Independent position evidence

Position information whose source does not merely repeat the same underlying sensor, allowing meaningful cross-checking of an apparent electronic fix.

Trial maneuver

A prediction of how proposed own-ship changes affect tracked encounters, dependent on target-motion and system assumptions that must still be monitored.

Competency and fishing permission

Separate requirements concerning the person’s maritime qualification and the lawful conduct of a particular commercial fishing operation, neither replacing the other.

Landing obligation

The applicable duty to retain, record and land covered catch, subject to the actual legally defined exceptions for the particular fishery and conditions.

Fishing status under COLREGs

A status related to actual fishing gear restricting maneuverability, distinct from merely possessing a commercial fishing licence or carrying fishing equipment.

Catch traceability

Records linking actual catch, handling, landing and commercial information, maintained with factual observations and the applicable correction and reporting procedure.

Displacement

The mass of water displaced by the floating vessel in the stated condition, corresponding to its supported total weight rather than cargo capacity alone.

Metacentric height

An initial small-angle stability quantity formed from the relevant metacenter and center-of-gravity heights, with applicable corrections and important limits to its interpretation.

Free surface correction

A correction representing the stability effect of liquid shifting in a slack tank, based on the actual geometry, density and vessel displacement.

Otter door

A trawl component generating hydrodynamic spreading force, with its actual design and setup determining performance rather than one universal attack angle.

Purse line

The line running through the lower purse-seine rings, drawn to close the bottom of the surrounding net beneath the fish school.

Selectivity device

A panel, grid or other arrangement that influences retention or escape of fish, requiring the actual approved configuration and fishery-specific legal conditions.

Warp load cell

A measuring device indicating towing-line tension, useful for monitoring a change but not sufficient by itself to identify one unique gear fault.

Latent heat of melting

Energy absorbed by ice as it melts, used in a stated heat-balance model without establishing the complete real refrigeration or food-safety requirement.

Loaded bight

A loop or curved section of a line whose movement or tightening under load can trap a person and create a severe crushing or dragging hazard.

DSC alerting

Digital selective calling used to initiate the appropriate maritime alerting procedure, distinct from the following voice exchange on its designated channel.

Radar SART

A search-and-rescue radar transponder responding to compatible radar interrogation, with its display pattern and practical detection depending on the actual conditions.

Float-free release

An approved arrangement allowing specified survival equipment to deploy as a vessel sinks, dependent on correct installation, maintenance and the actual equipment mechanism.

Freeing arrangement

Deck openings and related fittings allowing shipped water to drain, whose obstruction can retain damaging weight and free surface high on the vessel.

Significant wave height

A statistical wave-height measure associated with the highest third of waves, not a guaranteed upper bound on individual waves in a sea state.

Advection fog

Fog formed when sufficiently moist air moves over a colder surface and cools to saturation, reducing visibility despite the absence of local rain.

Ensemble forecast

A collection of forecasts exploring variations in initial conditions or modeling, used to assess uncertainty rather than certify one guaranteed outcome.