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German SSK (Pre-1933)

U1 Class

Data History & Modifications Pictures

The first submarine built for the German navy, U1 featured a double hull and a Korting engine rather than the more dangerous petrol units.

U2 Class

Data History & Modifications Pictures

U2 was an improved U1, with increased armament and engine output.

U3 Class

Data History & Modifications Pictures

The U3s were the first German submarines to carry a gun for surface actions.

U5 Class

Data History & Modifications Pictures

The U5s were the first German production class of uboats.

U9 Class

Data History & Modifications Pictures

The U9s were the first ocean going submarines of the German navy.

U13 Class

Data History & Modifications Pictures

The U13s were the first German uboats to carry a heavy gun for surface actions.

U16 Class

Data History & Modifications Pictures

U16 was a one off improved version of the U13 class.

U17 Class

Data History & Modifications Pictures

The U17s were the last uboats to carry Korting engines.