Is the saw-like device on the front of a U-boat intended for ramming ships? - Quora

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Is the saw-like device on the front of a U-boat intended for

Is the saw-like device on the front of a U-boat intended for

Is the saw-like device on the front of a U-boat intended for

Is the saw-like device on the front of a U-boat intended for

Is the saw-like device on the front of a U-boat intended for

Is the saw-like device on the front of a U-boat intended for

Is the saw-like device on the front of a U-boat intended for