Why asymmetric warfare is harder at sea

The general contrast is between asymmetric warfare on land and at sea. Land forces can hide and sustain dispersed supply nodes, whereas a vessel at sea is exposed, isolated, and easier to hunt once its method becomes known. German mines are difficult to lay within range of Heligoland's guns and patrols, while submarines face reciprocal British boats and a numerically larger Royal Navy. British supply ships also approach from home infrastructure across the North Sea behind a fortress that obstructs German surface interception. Asymmetric attacks can still impose costs, but they do not reliably solve Germany's central problem of taking or neutralising the island. The institutional imbalance reinforces the point: Britain treats the navy as essential to national defence and empire, while Germany's naval demands continue to compete with its army.