At the level of the training for Master there are two main areas of emphasis
in this subject. First, there should be a review of principles, more thorough consideration of the limitations of the systems, of the instruments and of the presentation of information than for the watchkeeping officer. Secondly, emphasis should be put on procedures for setting up the instruments, on sources of errors, detection of wrong information and on the use of corrections and estimation of accuracy.
The practical correction of the compass should be undertaken during training where
Administrations continue to permit Masters to undertake compass adjustment but an
understanding only of the process is sufficient where compass correction must only be
performed by a licensed compass adjuster.