Lord Diplock: '"The problem in this case is, in my view, neither solved nor soluble by debating whether the shipowner's express or implied undertaking to tender a seaworthy ship is a 'condition' or a 'warranty'...There are many contractual undertakings of a more complex character which cannot be categorised as being 'conditions' or 'warranties'... Of such undertakings all that can be predicated is that that some breaches will, and others will not, give rise to an event which will deprive the party not in default of substantially the whole benefit which it was intended that he should obtain from the contract... the legal consequences of the breach of such an undertaking, unless provided for expressly in the contract, depend on the nature of the event to which the breach gives rise and do not follow automatically from a prior classification of the undertaking as a 'condition' or a 'warranty'."'