The Canadian Navy’s fleet of Sikorsky CH-148 Cyclone maritime helicopters will require a second set of engine changes, according to the manufacturer.

Early reports indicate that the Cyclone was fitted with the CT7-8A1 engine, which made the helicopter heavier and less efficient than expected.

A Sikorsky spokeswoman said the engine redesign for the General Electric engines would produce 10% more horsepower for the fleet of 28 Cyclones, according to winnipegfreepress.com.

Currently, General Electric is developing the new upgraded CT7-8A7 engines to equip the final variant of the Cyclone helicopter.

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The Cyclone was originally scheduled to replace the navy’s aging fleet of Sea Kings in November 2008 but renegotiations between the parties pushed the deadline back to June 2012.