July 31st - On This Date - US Navy Submarine Service

• 1902 - USS A-3 Grampus (SS 4) is launched
• 1915 - Keel is laid for the USS N-3 (SS 55)
• 1917 - USS D-2 (SS 18) Rammed Schooner Charlotte W. Miller
• 1943 - USS Aspro (SS 309) is commissioned
• 1944 - USS Kete (SS 369) is commissioned
• 1944 - USS Sea Poacher (SS 406) is commissioned
• 1944 - Commander Lawson P. Ramage handles USS Parche like a PT boat in the middle of a Japanese convoy sinking a tanker and freighter. In this action he so confused the enemy that they were shooting at each other. He is awarded the Medal of Honor.
• 1961 - Keel is laid for the USS James Monroe (SSBN 622)
• 1972 - USS Entemedor (SS 340) is decommissioned for the second time