Submarine Operations Research Group Attack Data

USS Perch (Balao-class) (SS-313)

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
1  1944-05-24  03  Pearl Harbor  2210N  11830E  Night  Radar  Surfaced  Night  Radar  Surfaced  Mark XXIII Torpedo  6  4  AO  Damaged  5000 
1  1944-05-24  03  Pearl Harbor  2210N  11830E  Night  Radar  Surfaced  Night  Radar  Surfaced  Mark XVIII Electric Torpedo  4  0  PC  No Damage  400 
2  1944-07-29  16  Pearl Harbor  1046N  12713E        Daylight      Deck Gun  0  0  TRA  Sunk  100 
2  1944-08-05  06  Pearl Harbor  0900N  12622E  Daylight  Periscope  Submerged  Daylight  Periscope  Submerged  Mark XIV Type 3A Torpedo  3  0  PAT  No Damage  200 
3  1944-10-26  04  Pearl Harbor  3333N  12530E  Night  Radar  Surfaced  Night  Radar  Surfaced  Mark XVIII Type 1 Torpedo  4  0  AP  Not Final Attack on Target  7400 
3  1944-10-26  07  Pearl Harbor  3335N  12609E  Daylight  Radar  Submerged  Daylight  Periscope  Submerged  Mark XVIII Type 1 Torpedo  4  0  AP  Not Final Attack on Target  7400 
3  1944-10-26  07  Pearl Harbor  3335N  12609E  Daylight  Radar  Submerged  Daylight  Periscope  Submerged  Mark XVIII Type 1 Torpedo  2  0  AP  No Damage  7400 
5  1945-03-22  20  Fremantle  0106S  11719E  Night  Radar  Surfaced  Night  Radar  Surfaced  Deck Gun  0  0  AO  Sunk  300 
6  1945-04-26  10  Fremantle  0545S  11608E  Daylight  Periscope  Submerged  Daylight  Periscope  Submerged    3  0  AM  Not Final Attack on Target  700 
6  1945-04-26  10  Fremantle  0545S  11608E  Daylight  Periscope  Submerged  Daylight  Sound  Submerged  Acoustic Seeking Torpedo  1  0  AM  No Damage  700 


   

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.

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