Two subs out of action for six years

Two of navy's six Collins-class submarines will be out service for more than six years under the Gillard government's new maintenance regime.

HMAS Rankin and HMAS Collins have been out of action while undergoing maintenance in Adelaide, and will be returned to the Royal Australian Navy much later than the present three-year deadlines.

The Rankin is the youngest submarine in the fleet yet it has been docked since 2008.

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