Swinton v China Mutual Steam Navigation Co Ltd

This case involved an appeal to the High Court of Australia concerning a wharf labourer, William Robert Swinton, who suffered injuries from mustard gas while discharging cargo from the ship *Idomeneus*. Swinton sued the shipowners, China Mutual Steam Navigation Co. Ltd. and Ocean Steamship Co. Ltd., alleging negligence in the care, control, and management of the ship and its dangerous cargo. The shipowners, in turn, sought indemnity or contribution from the Commonwealth of Australia, which had issued a special order under National Security Regulations concerning the handling of certain military substances.

The central legal issue before the High Court was whether the shipowners had breached their duty of care to Swinton, an invitee, by failing to prevent injury from an unusual danger. Specifically, the court had to determine the scope of the shipowners' knowledge and imputed knowledge regarding the potential for leakage of mustard gas from the drums stowed in the hold, and whether this knowledge imposed a duty to warn or take further precautions, notwithstanding the involvement of Commonwealth officers under a special order. The court also considered whether the trial judge had erred in refusing to leave a specific question to the jury regarding the defendants' knowledge of a dangerous leak.

The High Court found that the shipowners remained responsible for the safety of the wharf labourers, as neither the National Security Regulations nor the order issued under them divested the shipowners of possession or control of the ship. The court reasoned that the danger arose from the condition of the hold, which was under the shipowners' management, and not from the handling of the cargo under the specific direction of Commonwealth officers. The court held that the shipowners owed a duty to exercise a high degree of care due to the known dangerous character of the cargo and the circumstances, including the incident in Melbourne, which should have alerted them to the risk of leakage, even if the precise nature of the danger (mustard gas) was initially concealed. The court concluded that the shipowners' duty extended to the likelihood of an escape of gas, not just the actual existence of a leak, and that the question sought by the defendants' counsel unduly limited this duty.

Consequently, the High Court allowed the appeal, setting aside the order of the Supreme Court of New South Wales and restoring the jury's verdict and judgment in favour of Swinton for £1,050. The shipowners were ordered to pay Swinton's costs of the appeal to the High Court and the costs of the appeal to the Supreme Court, with the jury's apportionment of liability concerning the third party (the Commonwealth) being upheld.