39 Knowledge of the general principles and basic
factors, including VHF range limitation and antenna height effect
necessary for safe and efficient use of all sub-systems and equipment
required in GMDSS in sea area A1, sufficient to support the training
given in paragraph 43 below.
40 Knowledge of the use, operation and service
areas of GMDSS sea area A1 sub-systems, e.g., navigational and meteorological
warning systems and the appropriate communication circuits.