WWII Submarine USS S-28, Missing for 73 Years

Discovered off Hawaii in 2017


STEP (Search for Those on Eternal Patrol) Ventures is pleased to announce its team, led by award winning explorer Tim Taylor, has discovered the lost WWII Submarine USS S-28. Considered to be one of the most important lost ships in the central Pacific, the USS S-28 sank on July 4th, 1944 and was discovered, explored and surveyed in 2650 meters (8700 feet) of water off the coast of Oahu, Hawaii. She holds an entombed crew of 49 US sailors.



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USS S-28 History and Expedition

The data collected to date of the USS S-28, consisting of mapping and filming of the wreck by the discovery team, will be shared with the US Navy for use in helping to determine the cause of its loss.

The keel of USS S-28 (SS-133) was laid down in April of 1919, just months after the end of the First World War. This S-Class Submarine was commissioned December 13, 1923 and spent 16 years taking part in various Navy exercises in the Caribbean and eventually in the Pacific. When the bombs fell on December 7th, she was being overhauled at Mare Island Naval Shipyard outside of San Francisco, California. She was one of several S-boats that were put into service in World War II and was initially sent to Alaska to defend the Aleutians against a possible Japanese invasion. The S-28 was later lost during a naval training exercise off the coast of Oahu on July 4, 1944.

Expedition S-28 used state of the art deep water autonomous underwater vehicles (AUVs) as well as a  remotely operated vehicle (ROV). STEP is pleased to be teaming with Mr. Taylor, who has a reputation for working with the latest in undersea technology in collaboration with top specialists in underwater exploration. This is Mr. Taylor's third US WWI submarine discovery since 2010 and is now part of his ongoing "Lost 52 Project." STEP looks forward to continuing to work with the "Lost 52 Project" and shares its commitment to preserving and honoring the legacy of lost WWII Submariners and the bravery of our sailors for future generations.


The STEP team plans to search for and document additional lost WWII submarines as well as other historically significant vessels that their research determines have a probability of being found using a combination of archival research and the latest in subsea search technology.