Three vessels of the Royal Navy have been named HMS Ambush.
Two were submarines:
HMS Ambush is an Astute-class nuclear fleet submarine of the Royal Navy, the second boat of her class. Ambush is the third vessel, and the second submarine, to bear the name in Royal Naval service. She was ordered in 1997, laid down in 2003 and commissioned in 2013.
Ambush's nuclear reactor will not need to be refuelled during the boat's 25-year service. Since the submarine can purify water and air, she will be able to circumnavigate the planet without resurfacing. The main limit is that the submarine will only be able to carry three months' supply of food for 98 officers and ratings.
Ambush has provision for up-to 38 weapons in six 21-inch (533 mm) torpedo tubes:
Ambush was ordered from GEC's Marconi Marine (now BAE Systems Submarine Solutions) on 17 March 1997. She was laid down at Barrow-in-Furness on 22 October 2003, officially named on 16 December 2010, launched on 6 January 2011, completed her initial dive test on 30 September 2011, and departed Barrow for sea trials on 15 September 2012.Ambush was commissioned in a ceremony at HM Naval Base Clyde on 1 March 2013.
HMS Ambush, or Ambush No. 5, was the American Gunboat No. 5 , launched in 1805. She served in the Mediterranean later that year. The Royal Navy captured her at the Battle of Lake Borgne on 14 December 1814. She was sold in 1815.
Gunboat No. 5 was built in Baltimore by William Price as one of a number of gunboats that President Thomas Jefferson had built for the defense of the United States. Price built her to a design by Josiah Fox, "Head Ship Carpenter and Navy Constructor", and launched her on 1 March 1805. She may have been a double-ender, initially armed with two 32-pounder guns (one fore and one aft). She had 2,600 pounds of copper in the sheathing for her hull and in her fittings, had a single mast amidships, and was rigged with a lateen sail. Sailing Master Alexander Harrison was named to command her.
Gunboat No. 5 left Hampton Roads on 15 May and sailed to the Mediterranean, in company with Gunboat No. 10. In 1805 the navy sent eight gunboats to the Mediterranean. For the voyage across the Atlantic, the gunboats received a dandy rig, false keels, and lee boards. They stowed their guns below, but carried light guns, possibly swivel guns, in order to have some means of defense.