HMS Jervis was a British Javelin Class destroyer of 1695 tons displacement launched in 1938. She was armed with six 4.7-inch guns; six smaller guns and ten 21-inch torpedo tubes. She was powered by two Admiralty 3-drum type boilers providing a top speed of 36 knots and carried a complement of 183. Found on http://www.probertencyclopaedia.com/browse/RJ.HTM