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AIS procedures | RS90 Operating Manual
List of nearby vessels
The MMSI list displays a list of vessels within VHF range.
The list is arranged in ascending order; closest first.
Each vessel’s MMSI (or name, depending on AIS setup) will be
displayed, together with its bearing and distance from your position.
PPI display
The Plan Position Indicator (PPI) shows the geographical location of
AIS targets with respect to your position, which is represented in the
centre of the circular display.
Symbols
• The solid circle in the middle is your vessel.
• Hollow diamonds represent vessels that are within the current
zoom distance.
• The solid diamond is the selected target vessel.
• The tails represent course over ground.
¼ Note: Units on the PPI display are always nautical miles.
1 SEASPRAY
225 0.59nM
2 SUNBIRD
275 1.43nM
8nMMMSI LIST 1/2
AIS CHART 1/9 8
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