Was giving up Heligoland good strategy for Britain?

Was giving up Heligoland a good idea for Britain?

It was politically understandable, but retaining and fortifying it could have imposed a costly strategic problem on Germany.

Britain's decision to relinquish Heligoland was politically understandable, yet retaining the island could have created persistent leverage against German governments. In this counterfactual, heavy coastal guns might have turned it into a landlocked dreadnought commanding nearby waters. Germany would probably still have captured it, but only through an operation costly enough to complicate plans elsewhere. Such an attack might also have warned Norway and Denmark before later German moves. This is explicitly a hypothetical use of the island, not a claim about events that actually occurred.