Ais; Ais System Definitions - VDO MAP 7w Plus GPS User Manual

Engine Alarms
E
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4.5

AIS

AIS is an Automatic Identification System. It has been introduced to improve the
safety of navigation by assisting in the efficient operation of ship-to ship, ship
reporting and VTS applications. The system should enable operators to obtain
information from the ship automatically, requiring a minimum of involvement of
ship's personnel, and should have a high level of availability. AIS transponders
installed on IMO vessels use VHF frequencies to:
Transmit details of their own vessel
♦
Receive details from other vessels or navigation aids within VHF range.
♦
Information being transmitted from vessels over 300 tons that, due to recent
worldwide legislation, are required to fit Class "A" AIS transponders.
Connecting to the chart plotter an AIS receiver (please contact your local dealer),
vessels with AIS transponder within VHF range are displayed on screen giving the
skipper or navigator a visual interpretation of the data of nearby vessels. This
improves safety, and specifically for collision avoidance reasons.

AIS SYSTEM DEFINITIONS

Target
♦
It is a vessel equipped with AIS. Information about the targets is being
received by AIS Receiver and displayed on the screen.
CPA
♦
Closest Point of Approach is the closest distance that will be achieved be-
tween your vessel and the tracked target, based on your vessel's speed
and direction and the target's speed and direction.
CPA Limit
♦
This is the distance from your vessel that a target may reach before a
target is deemed a threat.
CPA Alarm
♦
Occurs if CPA is less or equal to CPA Limit. This test is done for active
targets only.
TCPA
♦
Time to closest Point of Approach is the time remaining until the CPA will
occur.
TCPA Limit
♦
This is the time remaining before the CPA is reached.
TCPA Alarm
♦
Occurs if TCPA is less or equal to TCPA Limit. This test is done for active
targets only and if CPA value is less or equal to CPA Limit.
Radio Call Sign
♦
International call sign assigned to vessel, often used on voice radio.
User Manual
perature; Fuel Level; Turbocharger 1 Turbine Inlet Temperature; Turbocharger 2 Turbine
Inlet Temperature; Electrical Potential (Voltage); Battery Potential (Voltage), Switched;
Battery 2 Potential (Voltage).
: Alarms can be defined for the most important engine data. A warning is given if the set
alarm value for speed, any of the measured temperatures or fuel reserve is exceeded. A
warning is also triggered if a pressure measurement falls short of the set value. On-board
voltage overshooting and also undershooting will trigger an alarm. The alarm is visual in
the form of a pop up window and audible as an internal buzzer.
: The following settings can be saved on a user chart: Engine Units; Engine Display; Twin
Engine; Digital Engine Page; Engine Page Layout; Engine Alarms; Easy Link Illumination.
: All settings relevant to the engine can be loaded from one user chart.
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