Marine safety issues and actions

Incorrect wiring of the interlock

Issue number: MO-2010-004-SI-01
Who it affects: All owners operators and managers of ships equipped with Davit International fast rescue craft
Issue owner: d-i Davit International
Transport function: Marine: Shipboard operations
Background: Investigation Report 275-MO-2010-004
Issue release date: 27 July 2011
Current issue status: Adequately addressed
Issue status justification:

Action taken by DI

Safety issue description

It was found that the safety interlocks on the wave compensator systems on board British Sapphire, British Emerald and British Ruby had been electrically by-passed thereby preventing the safety interlocks from functioning.. As a result, the wave compensators on board all three ships could be engaged regardless of whether the fast rescue boats were waterborne or suspended from the fall wire

Proactive Action

Action number: MO-2010-004-NSA-024
Action organisation: d-i Davit International
Date: 27 July 2011
Action status: Closed

The ATSB has been advised that Davit International after sales department will contact owners of ships with similar wave compensation safety switch system to check if similar problem can occur.

In addition, Davit International will put additional warning in instruction manual and send revised pages to owners with same or similar wave compensation systems.

ATSB comment:

The ATSB is satisfied that the action proposed by Davit International adequately addresses the safety issue.

Last update 06 March 2014