Input signals requirements for VDR and S-VDR

Date and Time X X
Ship's Position X X
Speed X X
Heading X X
Bridge Audio X X
Communications Audio X X
Radar Data X X
AIS - (Radar alternative) If no radar interface available
Main Alarms (IMO Mandatory Bridge Alarms) X If IEC 61162 interface is available
Rudder order and response X
Engine Order & Response X
Hull openings (doors) status X
Watertight and fire doors status X
Acceleration and Hull Stresses (if fitted) X
Wind Speed and Direction X
Echo Sounder X