|   JDS Hayashio  | |
| History | |
|---|---|
| Name | 
  | 
| Namesake | Hayashio (1939) | 
| Ordered | 1959 | 
| Builder | Mitsubishi, Kobe | 
| Laid down | 6 June 1960 | 
| Launched | 31 July 1961 | 
| Commissioned | 30 June 1962 | 
| Decommissioned | 25 July 1977 | 
| Homeport | Kure | 
| Identification | Pennant number: SS-521 | 
| Fate | Scrapped, November 1977 | 
| General characteristics | |
| Class and type | Hayashio-class submarine | 
| Displacement | 
  | 
| Length | 59 m (193 ft 7 in) | 
| Beam | 6.5 m (21 ft 4 in) | 
| Draft | 4.1 m (13 ft 5 in) | 
| Depth | 6.4 m (21 ft 0 in) | 
| Propulsion | 
  | 
| Speed | 
  | 
| Complement | 40 | 
| Armament | 3 × 533 mm (21 in) torpedo tubes | 
JDS Hayashio (SS-521) was the lead boat of the Hayashio-class submarines. She was commissioned on 30 June 1962.
Hayashio was laid down at Mitsubishi Heavy Industries Kobe Shipyard on 6 June 1960 and launched on 31 July 1961. She was commissioned on 30 June 1962. [1] [2]
On 1 August 1962, the 1st Submarine Corps was newly formed and incorporated under the Kure District Force.
On 1 March 1963, the 1st Submarine was reorganized under the Self-Defense Fleet.
From 2 June to 19 August 1964, she participated in Hawaii dispatch training with JDS Wakashio.
On 1 February 1965, the 1st Submarine was reorganized into the 1st Submarine Group, which was newly formed under the Self-Defense Fleet.
At around 6:40 pm on 20 May 1970, she came into contact with a large merchant ship during a dive training in a water area about 30 km east of Tanegashima, Kagoshima Prefecture, and damaged her periscope. [3]
She was decommissioned on 25 July 1977 and dismantled at Furusawa Steel in Etajima-cho in November 1977. [4]
 
  Media related to  JS Hayashio (SS-521)  at Wikimedia Commons
JDS Makinami (DD-112) was the seventh ship of Ayanami-class destroyers.
JDS Ikazuchi (DE-202) is the lead ship of Ikazuchi-class destroyer escort of Japan Maritime Self-Defense Force.
JDS Fushimi (ASR-402) was a submarine rescue ship of Japan Maritime Self-Defense Force.
JDS Natsushio (SS-523) was the lead boat of the Natsushio-class submarines. She was commissioned on 29 June 1963.
JDS Fuyushio (SS-524) was the second Natsushio-class submarine. She was commissioned on 17 September 1963.
JDS Minegumo (DD-116) was the lead ship of Minegumo-class destroyers.
JDS Natsugumo (DD-117) was the second ship of Minegumo-class destroyers.
JDS Murakumo (DD-118) was the third ship of Minegumo-class destroyers.
JDS Yamagumo (DD-113) was the lead ship of Yamagumo-class destroyers.

JDS Makigumo (DD-114) was the second ship of Yamagumo-class destroyers.
JDS Asagumo (DD-115) was the third ship of Yamagumo-class destroyers.
JDS Ayanami (DD-103) was the lead ship of Ayanami-class destroyers.
JDS Isonami (DD-104) was the second ship of Ayanami-class destroyers.
JDS Shikinami (DD-106) was the fourth ship of Ayanami-class destroyers.
JDS Takanami (DD-110) was the fifth ship of Ayanami-class destroyers.

JDS Ōnami (DD-111) was the sixth ship of Ayanami-class destroyers.
JDS Wakashio (SS-522) was the second Hayashio-class submarines. She was commissioned on 30 June 1962.
JDS Harushio (SS-563) was the second boat of theAsashio-class submarines. She was commissioned on 1 December 1967.
The Mine Warfare Force belonged to the minesweeping force for the self-defense fleet of the Maritime Self-Defense Forces. Its main task is to lay naval mines in the event of an emergency, and it also helps to dispose of mines installed during World War II.
JDSYashiro(MSC-603) was the only ship of its type of minesweeper of Japan Maritime Self-Defense Force (JMSDF).