Main prod. Group survey
deu
fra
esp
13
Shipbuilding and ocean engineering
Marine propulsion, equipment and fittings
Maritime communication
1716.22
Data distribution systems
1716.45
Radio-frequency radiocommunication systems
1716.61
Machine telegraph systems
1716.66
Information transmission and control systems
1716.81
Satellite telephones
1716.82
Marine radio communication devices
1716.92
Underwater communication systems
