BATH, Maine (AP) — The second of three stealthy destroyers is going to have one of its massive turbines replaced.

Rear Adm. William Galinis tells the U.S. Naval Institute that a Roll Royce turbine must be replaced before Michael Monsoor can travel to San Diego.

Galinis said testing indicates turbine blades were damaged during acceptance trials. The destroyer uses two main turbines similar to ones used on Boeing 777 jetliners to produce electricity that powers the ship and its sophisticated systems.

The Navy accepted delivery of Monsoor in April, and it’s due to be commissioned in January.

Shipbuilder Bath Iron Works had no comment Thursday.

The final ship in the class, the Lyndon B. Johnson, is still under construction in Bath.

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