Nothing to do with ships, this is all about the bodyman’s troublesome job of securing the vehicle to the bench.
As you fasten a clamp to the lower pinch weld the impression of the jaws remains, forcing you to restore the weld afterwards.
And with recent models the pinch weld is under the door, covered with plastic guards. You must of course remove these guards and later remount them.
Care and caution are required for these two operations, sometimes taking more time than the repair job itself! With the Jollifast system the clamps register instantly and precisely with the under chassis holes.
And the fast anchoring means all of your time is now available for your skilled workmanship.