sentences:  The German Navy conducted testing during three weeks in August and September 2008 on the s "Braunschweig" and "Magdeburg", respectively.More than 130 takeoffs were conducted, and the UAV maintained unaided on-deck stability in greater than 15° flight deck roll conditions.The French Navy performed test flights during September and October 2008, with a Camcopter spending four days on a barge in the Atlantic Ocean and a further three days on the frigate "Montcalm" (D642).