MAIB report into CP propeller failure on chemical tanker KEY BORA, Hull 20th December 2013

The MAIB has published a report into the failure of the CP propeller of the chemical tanker KEY BORA resulting in jetty contact in the port of Hull on 20th December 2013

The vessel made heavy contact with the jetty because the CPP's astern response was inadequate and did not develop sufficient astern thrust in time to stop the vessel and was in any event four times slower than the ahead response to 50% demand. This situation had been unchanged for some time, but accepted as a fait accompli by the users, with no attempt to have it rectified.

Having not tested the propulsion system, the pilot was unable to fully assess the risks presented by the poor astern response and so did not put in place sufficient control measures.

The master's lack of familiarity with the backup control system meant that he was unable to intervene effectively to prevent the vessel striking the quay once it was clear that Key Bora was not slowing quickly enough.

For those on board Watkins' managed boats, please ensure that all navigating officers and engineers are given an opportunity to read this. Please confirm so in your next HESS meeting minutes. I can be contacted at any time if anyone has any questions. We would welcome any feedback of course, and would be pleased to circulate any comments.