Maritime Abbreviation

ARPAAbbr

Automatic Radar Plotting Aid — electronics that track radar contacts and calculate their course, speed, and closest approach.

Related maritime terms

Amidships— The central region of a vessel, equidistant between bow and stern. Anchor— A heavy metal device lowered to the seabed on chain or cable to hold a vessel in position. Anchorage— A designated or suitable area of water where vessels may anchor safely. Antifouling paint— A hull coating containing biocidal agents that inhibit growth of marine organisms on the u… Athwartships— Running across the vessel from side to side, perpendicular to the centreline. BAFAbbr— Bunker Adjustment Factor — a variable surcharge on freight rates reflecting changes in bun… Ballast— Weight carried in a vessel solely to achieve safe stability and correct trim. Ballast tanks— Dedicated watertight tanks flooded or emptied to adjust draught, trim, and stability.

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