Submarine Operations Research Group Attack Data

USS Bumper (SS-333)

Patrol Number Date Hour (00-23) Operational Command Latitude Longitude Approach Light Condition Approach Image Method Approach Surfaced or Submerged Attack Light Condition Attack Image Method Attack Surfaced or Submerged Weapon Used Number of Torpedoes Fired Number of Torpedo Hits Claimed Target Type Result Estimated Target Tonnage
1945-07-15  15  Fremantle  0639N  10141E  Daylight  Periscope  Submerged  Daylight  Visual  Surfaced  Deck Gun  SCH  Sunk  200 
1945-07-17  10  Fremantle  1054N  09931E  Daylight  Periscope  Submerged  Daylight  Periscope  Submerged    AO  Not Final Attack on Target  800 
1945-07-17  10  Fremantle  1054N  09931E  Daylight  Periscope  Submerged  Daylight  Periscope  Submerged    AO  Not Final Attack on Target  800 
1945-07-17  10  Fremantle  1054N  09931E  Daylight  Periscope  Submerged  Daylight  Periscope  Submerged    AO  Sunk  800 
1945-07-19  18  Fremantle  0650N  10335E  Daylight  Periscope  Submerged  Daylight  Periscope  Submerged    DD  Not Final Attack on Target  1300 
1945-07-20  02  Fremantle  0745N  10340E  Night  Radar  Surfaced  Night  Radar  Submerged    DD  No Damage  1300 
1945-07-20  04  Fremantle  0758N  10340E  Night  Radar  Surfaced  Night  Radar  Surfaced    AK  No Damage  1000 
1945-07-20  04  Fremantle  0758N  10340E  Night  Radar  Surfaced  Night  Radar  Surfaced    AO  No Damage  1000 
1945-07-20  05  Fremantle  0808N  10340E  Night  Radar  Surfaced  Night  Radar  Surfaced    AO  Sunk  1200 
1945-08-05  12  Fremantle  0131S  10534E  Daylight  Visual  Surfaced  Daylight  Visual  Surfaced  Deck Gun  MIS  Sunk  100 
1945-08-05  12  Fremantle  0131S  10534E  Daylight  Visual  Surfaced  Daylight  Visual  Surfaced  Deck Gun  TUG  Sunk  100 
1945-08-05  12  Fremantle  0136S  10524E  Daylight  Visual  Surfaced  Daylight  Visual  Surfaced  Deck Gun  LUG  Sunk  100 


   

A complete analysis of the SORG attack data and attacks not in SORG is currently available in the book United States and Allied Submarine Successes in the Pacific and Far East During World War II, 4th ed.

More Info About the Book:
McFarland & Company
Amazon

Back to Main SORG Page








Related Partner Sites: Combined Fleet Message Board | J-Air Forum | WW2 Database | IJN Doctrine | 3-D IJN Warships