Lost 52 Project

The Lost 52 Project is a private organization founded by Tim Taylor to do research on the 52 U.S. Navy submarines lost on patrol during the Second World War, performing discovery, exploration, and underwater archeology where possible.
Found, so far:

Submarines	Date lost	Circumstances of loss	Date found
USS S-36	21 January 1942	Scuttled after striking Taka Bakang reef near Sulawesi	13 May 2001
	4 May 1945	Depth charged by Japanese escort ships while attacking a convoy in the Gulf of Thailand	May 2005
	30 July 1942	Sank after torpedo and dive plane malfunction near Kiska	August 2006
	11 October 1943	Sunk after combined aerial bombing and surface depth charging in the La Pérouse Strait	31 October 2006
	3 March 1942	Depth charged on 1 March, partially repaired, then scuttled after being fired upon on the surface to prevent falling into enemy hands near Surabaya	23 November 2006
	13 August 1944	Struck a mine and sunk in the Balabac Strait	1 February 2009
	12 June 1943	Sank due to flooding from unknown causes in forward battery compartment near Key West	25 May 2011
	24 January 1942	Sank after collision with Sub chaser PC-460 in the Gulf of Panama	September 2014
	4 July 1944	Sank under unknown circumstances near Oahu	20 September 2017
	26 July 1944	Presumed to have struck a Japanese mine near Palawan Island	May 2019
	29 May 1958	Sank after collision with during training near Hawaii	August 2019
	27 February 1944	Sunk by aerial bomb from Japanese B5N torpedo bomber in the East China Sea	10 November 2019
	4 April 1946	Used as a target ship and sunk by torpedo fire	4 August 2020
	24 August 1944	Depth charged by Japanese escort ships while attacking them near Dasol Bay	May 2024

The organization has not limited itself to discovery of submarines. It has also located other Navy ships:

Ship	Date Lost	Circumstances of loss	Date found
	12 April 1945	Struck by kamikaze plane and Japanese flying suicide bomb during the Battle of Okinawa	December 2022