a 501(c)3 Ocean Outreach Project
Honoring the men their memory and their mission

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Expedition S-28 was launched in 2017 ,with sponsorship from STEP Ventures, to search for and document the USS S-28 (SS-133) S-class submarine, lost on July 4, 1944.

On September 20th, 2017, a team lead by noted award-winning explorer Tim Taylor discovered the remains of the WWII submarine lost in over 2600 meters (8500 feet) of water off the cost of Oahu, Hawaii.  

​Based on preliminary video and other documentation, the team currently speculates that the sub suffered a hull failure that resulted in the eventual separation of the bow, causing a near instant loss. She is the final resting place of 49 US sailors. 
HISAS Sonar Image S-28
Bathymetric Image of S-28 on slope
S-28 aft hatch
bow torpedo tubes- upside down
Deck Gun
Support Research Vessel
Sonar Image of USS S-28 stern and bow section 115 meters apart
USS S-28  -  "NOAA's top ten Iconic and mysterious shipwrecks of all time waiting to be discovered"  Outside Magazine 2017

ExpeditionUSS S-28CrewWar ServiceTeam

Expedition S-28 
Supported by STEP Ventures, LLC
USS S28 Expedition
USS S28 Memorial Service
USS S28 Photogrammetry
USS S28  Navy Verifies Discovery