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]