Japanese destroyer Yoizuki

Yoizuki in Kure on 16 October 1945, after the war.
History
Empire of Japan
Name	Yoizuki
Builder	Uraga Dock Company
Laid down	25 August 1943
Launched	25 September 1944
Completed	31 January 1945
Commissioned	31 January 1945
Stricken	5 October 1945
Fate	Transferred to Republic of China Navy, 29 August 1947
Republic of China
Name	Fen Yang
Acquired	29 August 1947
Commissioned	February 1949
Reclassified	As a training ship, 1 October 1949
Fate	Scrapped, 1963
General characteristics
Class and type	Akizuki-class destroyer
Displacement	2,700 long tons (2,743 t) standard 3,700 long tons (3,759 t) full load
Length	134.2 m (440 ft 3 in)
Beam	11.6 m (38 ft 1 in)
Draft	4.15 m (13 ft 7 in)
Propulsion	4 × Kampon type boilers 2 × Parsons geared turbines 2 × shafts, 50,000 shp (37 MW)
Speed	33 knots (38 mph; 61 km/h)
Range	8,300 nmi (15,400 km) at 18 kn (21 mph; 33 km/h)
Complement	263
Armament	8 × 100 mm (4 in)/65 cal Type 98 DP guns Unknown × Type 96 25 mm (0.98 in) AA guns (3×7 + 1×up to 40) 4 × 610 mm (24 in) torpedo tubes 16 × Type 93 torpedoes 54 × Type 95 depth charges

Yoizuki (宵月, "Evening Moon") was an Akizuki-class destroyer of the Imperial Japanese Navy. Her name means "Moon Visible as Day Joins Evening". She was commissioned too late to see action in World War II. Following the war, the ship was handed over to the Republic of China and renamed Fen Yang.

The Akizuki-class ships were originally designed as anti-aircraft escorts for carrier battle groups, but were modified with torpedo tubes and depth charges to meet the need for more general-purpose destroyers. The ships measured 134.2 meters (440 ft 3 in) overall, with beams of 11.6 meters (38 ft 1 in) and drafts of 4.15 meters (13 ft 7 in).^[1] They displaced 2,701 long tons (2,744 t) at standard load^[2] and 3,420 long tons (3,470 t) at deep load.^[3] Their crews numbered 300 officers and enlisted men.^[2]

Each ship had two Kampon geared steam turbines, each driving one propeller shaft using steam provided by three Kampon water-tube boilers. The turbines were rated at a total of 52,000 shaft horsepower (38,776 kW) for a designed speed of 33 knots (61 km/h; 38 mph). The ships carried enough fuel oil to give them ranges of 8,300 nautical miles (15,400 km; 9,600 mi) at speeds of 18 knots (33 km/h; 21 mph).^[4]

The main armament of the Akizuki class consisted of eight 10 cm Type 98 dual-purpose guns in four twin-gun turrets, one superfiring pair fore and aft of the superstructure. Yoizuki was equipped with 41 Type 96 25-millimeter (1 in) anti-aircraft (AA) guns in seven triple-gun mounts and twenty single mounts. The ships were also each armed with four 610-millimeter (24 in) torpedo tubes in a single quadruple rotating mount amidships for Type 93 (Long Lance) torpedoes; one reload was carried for each tube. The later batches of ships were each equipped with two depth charge throwers and two sets of rails for which 72 depth charges were carried. Yoizuki was equipped with a Type 13 early-warning radar on her mainmast and a Type 22 surface-search radar on her foremast.^[5][6]

In March, 1946, Yoizuki was used to transport over 1,000 Formosans, Filipinos and Japanese prisoners of war from Sydney, Australia. The conditions aboard ship and the obvious distress of the repatriates prompted controversy in Australia. On 29 August 1947, Yoizuki was turned over to the Republic of China. Renamed CNS Fen Yang, she was scrapped in 1963.

• Dodson, Aidan & Cant, Serena (2020). Spoils of War: The Fate of Enemy Fleets after Two World Wars. Barnsley, UK: Seaforth Publishing. ISBN 978-1-5267-4198-1.
• Jentschura, Hansgeorg; Jung, Dieter & Mickel, Peter (1977). Warships of the Imperial Japanese Navy, 1869–1945. Annapolis, Maryland: United States Naval Institute. ISBN 0-87021-893-X.
• Rohwer, Jürgen (2005). Chronology of the War at Sea 1939–1945: The Naval History of World War Two (Third Revised ed.). Annapolis, Maryland: Naval Institute Press. ISBN 1-59114-119-2.
• Stille, Mark (2013). Imperial Japanese Navy Destroyers 1919–45 (2): Asahio to Tachibana Classes. Botley, UK: Osprey Publishing. ISBN 978-1-84908-987-6.
• Sturton, Ian (1980). "Japan". In Chesneau, Roger (ed.). Conway's All the World's Fighting Ships 1922–1946. Greenwich, UK: Conway Maritime Press. ISBN 0-85177-146-7.
• Todaka, Kazushige, ed. (2020). Destroyers: Selected Photos from the Archives of the Kure Maritime Museum; the Best from the Collection of Shizuo Fukui's Photos of Japanese Warships. Japanese Naval Warship Photo Album. Annapolis, Maryland: Naval Institute Press. ISBN 978-1-59114-630-8.
• Whitley, M. J. (2000). Destroyers of World War Two: An International Encyclopedia. London: Cassell & Co. ISBN 1-85409-521-8.

• CombinedFleet.com: Akizuki-class destroyers
• CombinedFleet.com: Yoizuki history