ROCS Hai Pao
Summery from Wikipedia:
USS Tusk was decommissioned and struck from the Naval Vessel Register on 18 October 1973 to be transferred, by sale, to the Republic of China (Taiwan). Ex-Tusk was commissioned into the Republic of China Navy as Hai Pao, first with hull number SS-92, then SS-794, and finally SS-792. The terms of the purchase specified that she be used strictly for ASW training, so her torpedo tubes were welded shut before the transfer. The Taiwanese restored the torpedo tubes in 1976 and reportedly received modern torpedoes through Italy from a number of sources. As of 2021, Hai Pao was still afloat at Kaohsiung Naval Base, reportedly allowed only to operate in sea not deeper than 100m, making her the oldest submarine still within regular service in any navy.
slight mistake, Republic of China (Taiwan), received to of them:
- ROCS Hai Shih (SS-791) (former USS Cutlass (SS-478)), still in active service!
In January 2017, Taiwan announced that it would receive a retrofit to extend its service life until 2026, making it the longest-serving submarine in history. The submarine is still operational and reportedly capable of combat. The $19 million retrofit was to improve the hull and the diesel vessel's navigational elements.
- ROCS Hai Pao (SS-792) (former USS Tusk (SS-426)), still in active service!
on google map you can find ROCS Hai Shih and ROCS Hai Pao, at dock at the Naval base, with a Hai Lung class in-between them
https://firstname.lastname@example.org ... e3!5m1!1e4
Side note: read about Hai lung upgrade on wikipedia... Taiwan have apparently not learned to go quiet trough the door