Alternative term: Uniplanar Filament (G.B.)
A filament in which the different sections or the axes of the coils are all in the same plane.
Reference: C.I.E. (modified) (Fig.27)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
centre of gravity
Centre of buoyancy
Celsius (previously Centigrade)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM