Dutch Royal Navy
Daily used communication tools
Speak - Listen - Write - Read
The Navy uses the normal communication tools to operate their systems everyday. They need to speak to each other. they do this with a radio and phone. these phones hang in the ships on all decks and all levels.
They use hand signals when talking is not possible. for example when there is fire and talking is not easy. these hand signals are easy and can tell if you have to stop or move for example.