This was to verify that there was clearance of navigation lights, davits and deck fittings etc from the various pipework, cables and fencing which are around and on the sides of the lock chamber. So for instance, items near the stern may have cleared when one way round, but not when facing south. The vessel now trades on the River Thames under a different name. Robert
Nice clip but why did they enter the lock, come out again, re-enter, and then come out again?
This was to verify that there was clearance of navigation lights, davits and deck fittings etc from the various pipework, cables and fencing which are around and on the sides of the lock chamber. So for instance, items near the stern may have cleared when one way round, but not when facing south. The vessel now trades on the River Thames under a different name.
Robert