Facts and Judgment
Hartley v Ponsonby  7 EB 872
Half of a ship's crew deserted on a voyage. The captain promised the remaining crew members extra money if they worked the ship and completed the voyage. The captain then refused to pay up.
The crew were entitled to the extra payment promised on the grounds that either they had gone beyond their existing contractual duty or that the voyage had become too dangerous frustrating the original contract and leaving the crew free to negotiate a new contract. Back to lecture outline on consideration in Contract Law