HMS Ambush Arriving at HMNB Clyde
Ambush, the second of the Royal Navy's potent new Astute Class attack submarines, sails into Her Majesty's Naval Base Clyde in September 2012 to begin sea trials.
The 7, 400 tonne submarine sailed from the shipyard in Barrow-in-Furness in Cumbria, where she was built, to HMNB Clyde in Scotland.
The seven Astute Class boats planned for the Royal Navy are the most advanced and powerful attack submarines Britain has ever sent to sea.
They feature the latest nuclear-powered technology, which means they never need to be refuelled and can circumnavigate the world submerged, manufacturing the crew's oxygen from seawater as she goes.
Minister for Defence Equipment, Support and Technology Philip Dunne said:
Ambush's arrival at her home port to begin her sea trials marks a key milestone in the Astute Class submarine programme and is testament to the skills of those involved in the UK's world class submarine building industry.
"Ambush is an immensely powerful and advanced vessel that will deliver an important capability to the Royal Navy giving it the versatility and technical excellence needed to operate successfully across the globe."
The Astute Class is quieter than any of her predecessors and has the ability to operate covertly and remain undetected in almost all circumstances despite being fifty percent bigger than the Royal Navy's current Trafalgar Class submarines.
The boat's Commanding Officer, Commander Peter Green, said:
It was very satisfying bringing Ambush into her home port for the first time after initial sea trials. The ship's company and I are now looking forward to putting her through her paces over the coming months, ensuring that she is one step closer to being deployed on operations
Periscope of USS Dallas and HMS Illustrious
The periscope of the American submarine USS Dallas cuts through the surface as HMS Illustrious sails past in the morning haze.
HMS Illustrious, RFA Fort Victoria, RFA Fort Austin, USS Bulkeley and the American Los Angeles Class Submarine USS Dallas took part in a joint anti submarine exercise in the Middle East.
The aims of the exercise is to develop maritime interoperability by exercising Anti-Submarine Warfare tactics with US allies in the challenging sonar environment of the warm and shallow waters of the Gulf region.
The exercise was broken down into three phases. The ships and submarines initially tested acoustic and non-acoustics sensor performance against known positions, gaining useful real life data for the region.
The second phase relied on the ships escorting HMS Illustrious as the Mission Essential Unit (MEU) along a passage whilst evading detection and simulated torpedo attacks by USS Dallas.
In the final phase USS Dallas tried to locate and destroy RFA Fort Austin as the MEU, in a holding box which simulated an anchorage, as the UK and US naval ships provided protection. Additional helicopter support to the ships was ably provided by the Anti-Submarine sonar dipping Merlins embarked in HMS Illustrious and USS Bulkeley's Seahawk, with Westminster's Mark 8 Lynx helicopter providing an additional surface search and weapon carrying capability