Manage GPS Vessels

The Manage GPS Vessels command will display the Manage GPS Devices dialog (pictured below). This dialog displays a list of all GPS devices that are currently being tracked and provides the ability to modify several settings related to the GPS devices, such as device icon and track style, allowed boundary, etc. This dialog can be considered the central command center for fleet management operations when tracking multiple GPS devices through a compatible receiver.

The dialog buttons perform the following functions:

Set Track Display Style - Select the drawing style to use when displaying the track log for the selected device.
Select Device Icon - Select the icon to use for the selected device on the main map display. Choose from one of the available point symbols or choose to use the GPS vessel selection, which allows for direction of travel to be easily visualized.
Set Device Boundary - Select a rectangular or polygonal boundary to restrict the selected GPS device(s) to. If a device travels outside its allowed boundary, a warning message will be displayed.
Set Device Display Name - Sets the name to use for the selected GPS device when displaying it on the map display and in the device list.
Set Device Display Font - Select the font to use when displaying the name of the selected device on the map.

Right-click on the device list for additional options, including the ability to set text to display when hovering over the device with the mouse cursor on the map, as well as the ability to group the devices and set styles by group.

Tracking Multiple GPS Devices

Global Mapper supports tracking multiple GPS device locations using the following options:

his works with the multi-plexing hardware that merges position information from multiple GPS devices in to a single NMEA stream with special sentences. We support the following:

RaveonTech (ravtrack.com) - embeds multiple GPS device locations using $PRAVE sentences
InStar - uses $PCDLI sentences
SubSea - uses $HID sentences
$GPWGT - standard NMEA string for multi-vehicle tracking