English to Greek Tech/Engineering Mechanics / Mech Engineering Γερανοί

To secure safe lifting in single operation, one or two sensors detect the gap between the two 20ft containers in the middle.
If a gap is detected, locking of the twistlocks is not allowed.

Gap detection information to the crane driver:
Preferred is a special core to the cabin.
Alternative, a spreader lamp indicates the gap-detection.

To bridge the gap-detection:
There are several methods to bridge the gap-detection.

If there are more free spreader cores available for gap-detection (to the crane), bridging the gap-detection can be controlled again on the spreader.
One core to the cabin is required for gap-detection, one core is required for bridging.