Furuno FEA-2107 Operator's Manual page 501

29. Steering With Yokogawa PT-500A
29.9 How to Use the Curved EBL with Yokogawa
PT-500A Autopilot
Curved EBL is a control tool to monitor automatic operation of GotoWaypoint (="NAVI") steering mode. The
Curved EBL is available on ECDIS display and on some selected ARPA radar displays.
After the WP Approach but before start of turn the curved EBL display next intended turn. When the own ship starts
a turn initiated by Automatic Route steering the Curved EBL is locked to its position.
During the turn you can monitor how your ship performs the intended maneuver against the plan by comparing the
Curved EBL position and your current own ship position.
Curved EBL at the wheel over point.
Locked Curved EBL during turn.
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