The Eugenia [1964]

Blocking of Suez meant ship got trapped.
Only alternative to trying to get through would have
been voyage around Cape.
Court of Appeal applied doctrine of frustration to
this hypothetical situation and held no frustration –
Following Davis test,
alternative route not fundamentally different, merely longer and more
Fact it has become more onerous or expensive for one
party than he thought is not sufficient for frustration.