Set against the backdrop of sophisticated maritime and aviation technology TOP COVER follows the training of the six air crew and nine maintenance personnel who are posted aboard HMAS Sydney, a Royal Australian Navy Guided Missile Frigate. This fast action documentary follows the crew of 816 gaining their deck qualifications, the 'licence' that allows them to take off and land a Seahawk from the deck of HMAS Sydney, even in the roughest seas. It shows what really happens when the Royal Australian Navy brings in the resources of its front line Squadron of the Fleet Air Arm to police the seas of the Middle East.