Ruijin-class armed merchantman

History
USA
Completed:	During World War II
Acquired:	During World War II
Commissioned:	During World War II
Decommissioned:	After World War II
In service:	World War II
Out of service:	After World War II
Fate:	Sold to Yang Ming Marine Transport Corporation after World War II
History
Republic of China
Name:	See main text
Namesake:	See main text
Acquired:	After World War II
Fate:	Converted to armed merchantman by PLAN
History
China
Name:	See main text
Namesake:	After Chinese cities
Acquired:	early 1950s
Fate:	scrapped in 1960s
General characteristics
Type:	Armed merchantman
Displacement:	560 long tons (570 t)
Length:	180 ft (55 m)
Beam:	33 ft (10 m)
Draught:	10 ft (3.0 m)
Propulsion:	500 hp (370 kW) from 2 General Motors Cleveland Division 6-278A 6-cyl V6 diesel engines x 2
Speed:	12 knots (14 mph; 22 km/h)
Complement:	100+
Armament:	1 × M101 howitzer 2 or 3 × 3″/50 caliber guns 2 × twin 3.7 cm Flak 18/36/37/43 guns 4 × twin Type 96 25 mm AT/AA Guns

Ruijin class armed merchantman is a class of Chinese armed merchantmen of the People's Liberation Army Navy (PLAN) in its infancy, and participated in several battles against ships of the Republic of China Navy (ROCN) in the early 1950s. These ships are also frequently referred to as gunboats by Chinese.

At its infancy, when first established in 1950, PLAN severely lacked large warships needed to defend the coastal regions which had been taken from the Republic of China at the end of Chinese Civil War. To meet the urgent need, a decision was made to strengthen the newly established PLAN with armed merchantmen by converting some of the cargo ships in good condition. A total of six cargo ships from China Merchants Steam Navigation Company were selected for the conversion, all of which were American coastal freighter from the World War II era. These ships were sold to China Merchants Steam Navigation Company after the war. They are Design 427 (officially Vessel, Supply, Aircraft Repair, Diesel, Steel, 180') light cargo ships (AKL). All ships were assigned to the Eastern China Military Region Navy (ECMRN, 华东军区海军), the predecessor of East Sea Fleet.

The main armament of Ruijin class consisted of either three 3″/50 caliber guns, or two 3″/50 caliber guns and a M101 howitzer. It’s worthy of note that most of the US 3" guns are not those left behind by ROCN when they retreated from mainland China, but instead, they were transferred to China from the former Soviet Union, who received them from the US during World War II. Because PLAN had already been using US 3" guns captured during the Chinese Civil War, the same guns in Soviet hands were provided to simplify logistics. The secondary armament of Ruijin class consisted of Japanese and German guns Chinese communist force during the Chinese Civil War, including a pair of twin 3.7 cm Flak 18/36/37/43 guns, and two pairs of twin Type 96 25 mm AT/AA Guns. The lead ship of this class was lost to aerial attack by four ROCAF P-47s on May 18, 1954, and the rest of this class retired in the 1960s as domestically Chinese built frigates entered PLAN service.

PLAN name	ROCN name	Launched	Commissioned	Retired	Status	Fleet
Ruijin	Jiangtong (江通)	Early 1950s	Early 1950s	May 18, 1954	Sunk	ECMRN
Xingguo	Jiangda (江达)	Early 1950s	Early 1950s	1960s	Scrapped	ECMRN
Zunyi	Dezhou	Early 1950s	Early 1950s	1960s	Scrapped	ECMRN
Handan	Hoary stock flower	Early 1950s	Early 1950s	1960s	Scrapped	ECMRN
Huaiyang	Golden fragrant flower	Early 1950s	Early 1950s	1960s	Scrapped	ECMRN
Yancheng	Clove flower	Early 1950s	Early 1950s	1960s	Scrapped	ECMRN

See also

• People's Liberation Army Navy
• People's Liberation Army Navy Surface Force
• Naval history of China