Link to World war 1 in colour: 4- Killers of the sea documentary
Documentary Description
In this episode we discover that there was only one major clash of
fleets in World War 1. Instead, the war at sea was one of blockades and
sinkings and a small but feared U-boat. By August 1914 Germany and
Britain were building massive and expensive warships - the dreadnoughts.
The British controlled the North Sea, and built up supplies by
commandeering all goods heading for Germany. Britain's survival depended
on keeping her trade routes open, and for this reason Germany declared
unrestricted submarine warfare on merchant shipping.