HMS Petersfield

History
United Kingdom
Builder	Lobnitz, Renfrew
Launched	3 March 1919
Fate	Wrecked 11 November 1931
Notes	Pennant T.8 / T.21
General characteristics
Class and type	Hunt-class minesweeper, Aberdare sub-class
Displacement	800 long tons (813 t)
Length	213 ft (65 m) o/a
Beam	28 ft 6 in (8.69 m)
Draught	7 ft 6 in (2.29 m)
Installed power	2 × Yarrow boilers 2,200 ihp (1,600 kW)
Propulsion	2 shafts 2 vertical triple-expansion steam engines
Speed	16 knots (30 km/h; 18 mph)
Range	1,500 nmi (2,800 km; 1,700 mi) at 15 knots (28 km/h; 17 mph)
Complement	74
Armament	1 × QF 4-inch (102 mm) gun 1 × 76 mm (3.0 in) anti-aircraft gun

HMS Petersfield (ex-Portmadoc) was a Hunt-class minesweeper of the Aberdare sub-class built for the Royal Navy during World War I. She was not finished in time to participate in the First World War. Re-commissioned at Hong Kong on 23 February 1925 for service on the China Station as an admiral's yacht. She was wrecked on 11 November 1931 off Tung Yung Island, with the C-in-C China Station Admiral Sir Howard Kelly embarked. Two courts martial following her loss resulted in severe reprimands for her Captain, Commander Douglas C. Lang and Navigating Lieutenant, Geoffrey A. H. Pratt, though an imperious meddling throughout the unfolding disaster brought ignominy upon Admiral Kelly, as well.