Navigation and Seamanship (1+1)

4.2.5.2. How to call

The identity signal of the station(s) addressed is to be hoisted with the signal If no identity signal is hoisted it will be understood that the signal is addressed to all stations within visual signalling distance.

How to answer signals

All stations to which signals are addressed or which are indicated in signals are to hoist the answering pennant at the dip as soon as they see each hoist and close up immediately, when they understand it; it is to be lowered to the dip as soon as the hoist is hauled down at the transmitting station, being hoisted close up again as soon as the next hoist is understood.

How to complete a signal

The transmitting station is to hoist the answering pennant singly after the last hoist of the signal to indicate that the signal is completed. The receiving station is to answer this in a similar manner to all other hoists

How to act when signals are not understood

If the receiving station cannot clearly distinguish the signal made to it, it is to keep the answering pennant at the dip. If it can distinguish the signal but cannot understand the meaning of it, it can hoist the following signals: “ZQ” = “Your signal appears incorrectly coded. You should check and repeat the whole”, or “ZL” = “Your signal has been received but not understood”.