Target Of Interest (TOI)
AIS, Radar, DSC and Intel targets can be designated as TOIs. Once a target is designated as a TOI, STEDS messaging is used to broadcast the TOI to all vessels in range or to send the TOI to an individual MMSI number. TOIs can also be received over STEDS messaging.
Recipient MFDs must have the same STEDS passphrase installed as the sender’s MFD.
TOIs can be assigned as ‘OneShot’ TOIs or as recurring TOIs. OneShot TOIs are sent once and are automatically cancelled after a specified decay period. Recurring TOIs are repeated until cancelled at the selected transmission rate.
TOIs created from Inter targets or DSC targets are always assigned as OneShot TOIs.
Target of Interest (TOI)Target iconsTOI icons are displayed in the Chart app and Radar app. Different icons are used to differentiate between sent and received TOIs.
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Sent recurring TOI icon A recurring TOI is represented on the sender’s MFD using a red triangle icon with 2 red rings around it.Target of Interest (TOI)Sent Recurring TOIs will be tracked until cancelled. |
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Sent OneShot TOI icon A OneShot TOI is represented on the sender’s MFD using a red triangle icon with 2 red dashed rings around it.Target of Interest (TOI)Sent OneShot TOIs will be tracked until the decay period has elapsed. See: OneShot TOI decay times |
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Received TOI icon A TOI that has been received from another vessel is represented on the recipient’s MFD using a red triangle icon. Target of Interest (TOI)Received When a TOI message is received a notification is displayed onscreen. The incoming message is saved in the Messages app.. A TOI received from another vessel cannot be forwarded on to other vessels. Received TOIs will be tracked until cancelled. |
If a Radar target or AIS target that a TOI is based on becomes lost then the TOI will also become lost.