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German Submarine Sink the SS Athenia
Interperated by the UK, it is considered the start of the German unrestricted submarine warfare. -
FIrst German Submarine Lost to an Allied Ship
This was the date of the first U-boat lost to an Allied submarine. It was sunk by the HMS Salmon outside of Kristiansund in Norway. -
U-boat Sinks 3 Merchant Steamships
On this day, German U-boat U-52 sunk three merchant steamships. -
First American Submarine Sunk
On this day, U-552 sunk the USS Reuben James, by torpedo. -
Start of a New U-boat Campaign
Here, the start of a new U-boat campaign is begun with the sinking of the MV Cyclops. This campaign sunk 200 merchant vessles all within a 10 mile diamter of the coast. -
Passenger Ferry Sunk by a U-boat
On this day, in Cabot Strait, the SS Caribou passenger ferry was torpedoed down by German U-boat U-69. -
Period: to
Many U-boats are Sunk
In June of 1943, 17 U-boats are sunk by enemy ships. During July a total of 46 U-boats were destroyed by enemy ships. In August 20 U-boats were sunk by enemy ships. This making a grand total of 83 U-boats sunk from June to August.