Ais; System Definitions - Standard Horizon CPN1010i Owner's Manual

No (the chart is on an external device, i.e. SD CARD)
· Networked Chart:
Yes (the chart is on the remote CPN Series Chart Plotter)
No (the chart is on the local CPN Series Chart Plotter)
· Warning Status: reports the specific warning message about the chart's data.
· Segmentation: is the kind of data available: 4D, MAX, BASE, invalid chart, currently
content not supported.
1
Only for America users.

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 location 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.
CPN Series Chart Plotters are able to display AIS target (for collision avoidance) on the
Chart Page and AIS list pages when connected to a AIS receiver (GX2100 or GX2150
STANDARD HORIZON VHF/AIS transceiver) or transponders which output NMEA 0183
VDM sentence at 38400 or 4800 baud. The CPN Series Chart Plotters are able to show
targets from both Class A (commercial) and Class B targets.

SYSTEM DEFINITIONS

· Target: vessel equipped with AIS. Information about the targets is being received by
AIS Receiver and displayed on the screen.
· CPA (Closest Point of Approach): the closest distance that will be achieved between
your vessel and the tracked target, based on your vessel's speed and direction and the
target's speed and direction.
· CPA Limit: 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): time remaining until the CPA will occur.
· TCPA Limit: 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.
· Name: name of ship, 20 characters.
· MMSI (Maritime Mobile Service Identity) number: a unique 9 digit number that is
assigned to a DSC radio station. It primarily registers the boat information in the U.S.
Page 108 Owner's Manual