Torpedo Boats at War
- Episode aired Jul 18, 2017
- TV-PG
- 42m
A look at the silent threat of submarines, from tests in the River Thames, to the German's deadly U-boat attacks in the Second World War.A look at the silent threat of submarines, from tests in the River Thames, to the German's deadly U-boat attacks in the Second World War.A look at the silent threat of submarines, from tests in the River Thames, to the German's deadly U-boat attacks in the Second World War.