Chinese frigate Hai'an

A Hai'an-class frigate, either Hai'an or Yuyuen
History
China
Name	Hai'an (海安)
Builder	Kiangnan Arsenal
Launched	24 May 1872
Fate	Scrapped after 1885
General characteristics
Type	Wooden steam frigate
Displacement	2,850 long tons (2,896 t)
Length	372 ft (113 m) oa 300 feet (91 m)
Beam	42 feet (13 m)
Draught	21 feet (6.4 m)
Installed power	1,750 ihp (1,300 kW)
Propulsion	Reciprocating engine, single shaft
Speed	12 knots (22 km/h; 14 mph)
Complement	372
Armament	2 × 9-inch Muzzle-loading rifles 24 x 70-pounder Whitworth naval gun

Hai'an (Chinese: 海安; pinyin: Hǎi'ān; Wade–Giles: Hai-an), originally named Zhen'an (simplified Chinese: 镇安; traditional Chinese: 鎮安; pinyin: Zhèn'ān; Wade–Giles: Chen-an), was a wooden steam powered frigate built for the Imperial Chinese Navy. She was the lead ship of the Hai'an class, which consisted of her and her sister Yuyuen. They were the largest vessels built in China until the 1930s; they each ran over budget and used sub-standard building materials which limited their use. Hai'an was initially used as a training ship, and later saw action in the Sino-French War as a potential blockship, being scrapped as a hulk following the war.