Classification of bearings

From International Dictionary of Marine Aids to Navigation
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4-2-215

An arbitrary system for the grouping of bearings according to their accuracy. The bearings are grouped into one or other of the four following classes

Class A bearings in which there is a probability of less than 1 in 20 that the bearing error would exceed +/-2 degrees

Class B bearings in which there is a probability of less than 1 in 20 that the bearing error would exceed +/-5 degrees

Class C bearings in which there is a probability of less than 1 in 20 that the bearing error would exceed +/-10 degrees

Class D bearings in which the error would exceed +/-10 degrees

Reference: I.T.U.




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

Centre of buoyancy

Contrast

Celsius (previously Centigrade)

Capacitance

diameter at the waterline (m)

change in the value of a term

Solar declination angle (in degrees)

Forward amplitude

charge current

Intensity

Time period

roll period

Transmissivity

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM