Motor room fireplace burning and obscuring ME2 motor on board. Impression courtesy of MAIB.

The report on the investigation of two catastrophic motor failures, 1 resulting in a fireplace, on board Wight Sky at the entrance to Lymington River and just before berthing at Lymington Pier on 26 August and 14 December 2018 has been submitted by the MAIB, pursuing a long time of investigations.

On 26 August 2018, Wight Sky suffered a catastrophic main motor failure as it organized to enter the Lymington River on its frequent crossing from Yarmouth, Isle of Wight. This was the ferry’s 2nd catastrophic major motor failure in a lot less than a year, the failed motor staying the alternative for the former failure that experienced resulted in a hearth and serious accidents to an engineer officer. On 14 December 2018, Wight Sky suffered a 3rd catastrophic motor failure. On this situation, the unsuccessful motor was a new create and had been in procedure for just 389 hours.

Wight Sky was a single of 3 Wight Course sister ferries and following the 3rd motor failure Wightlink withdrew its Wight Course ferries from support. Adhering to discussions among the ferry proprietor, the Maritime and Coastguard Agency, Lloyd’s Sign-up, and the motor maker Volvo Penta, a mitigation plan was put in spot to empower the ferries to return to service.

Roll-on/roll-off passenger ferry Wight Sky
Roll-on/roll-off passenger ferry Wight Sky at sea. Image courtesy of Geni – Wiki Media.

This investigation found a historical past of motor failures throughout the Wight Class fleet courting back again to 2010 and for that reason, the scope of the investigation expanded to include all regarded failures. This led to a long and specific complex investigation that comprised forensic evaluation and screening of five of the unsuccessful engines and their elements, a whole evaluate of the vessels’ system design and operation, and the protection management, planned servicing and affliction monitoring procedures, together with manning and specialized oversight. In May well 2019, the MAIB published an interim report of its preliminary findings.

The key basic safety issues discovered had been:

• Insufficient technological oversight of the engines’ operating parameters.

• Criteria of servicing management and high-quality manage.

• Motor part and auxiliary technique layout problems.

• A deficiency of very clear possession for motor servicing and engine affliction checking.

Protection suggestions established out in the MAIB report are:

Wightlink: Be certain skilled technological oversight of servicing on board its vessels, through resourced techniques, so that technical difficulties are identified and escalated to senior administration as important.

Volvo Penta AB: Discover all afflicted D16 MH prospects to notify and solve the identified oil filter bypass anomaly.

Lloyds Sign-up: Assess the have to have to introduce in its rules and regulations the time taken to declutch a primary propulsion motor from the push shaft in the party of an unexpected emergency shutdown, to stop the motor from currently being pushed and growing the danger of significant injury and destruction.

RK Maritime Ltd: Offer its prospects with all manufacturers’ security bulletins applicable to the engines in use.

Andrew Moll, main inspector of maritime mishaps, states: “This has been a very long and complicated investigation. At first focussing on two catastrophic engine failures, the investigation located a background of engine failures throughout Wightlink’s fleet of Wight Course ferries courting again to 2010. Consequently, the scope of the investigation was broadened to include the forensic examination and tests of 5 unsuccessful engines and their elements, a total review of the vessels’ propulsion method style and design and procedure. We also examined the ferry operator’s security administration, prepared servicing and ailment monitoring methods, collectively with the technical oversight delivered by the engine company and its accepted support service provider.

“MAIB has worked closely with Wightlink, Volvo Penta AB, Lloyds Sign up and the Maritime and Coastguard Agency more than the previous 3 several years to enable be certain that most of the technical problems discovered in the investigation report were being dealt with as quickly as practicable. The report has recommendations aimed at increasing the reliability of the propulsion machinery on board the Wight Course ferries and lower the probability of future catastrophic engine failures.”

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