To ask the Secretary of State for Defence, on which Royal Navy ships were repairs carried out from March 2011 following the review of electrical and propulsion systems; and what the cost of those repairs was.

The Independent Power and Propulsion System Performance Review, dated March 2011, highlighted sixteen recommendations to improve the reliability of the Type 45 Destroyer's Power and Propulsion system. Fourteen of the recommendations have been completed across the class.

The remaining two recommendations, involving modifications to existing training procedures and documentation, have been incorporated into day to day business.

Implementation of these recommendations has directly contributed to an improvement in reliability.

All but one of the fourteen tasks were implemented under the Type 45 Destroyer Contract For Availability (CFA) arrangement with BAE Systems, at no additional cost to the Ministry of Defence.

The only task not covered under the CFA contract cost a total of £24,000 for the six Type 45 ships.