Loop alignment error
Inaccurate alignment of the loop antenna system with respect to the datum line. Usually in ships, inaccurate alignment with respect to fore and aft line.
Reference: B.S. (modified)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
Centre of buoyancy
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM