Nagle v Rottnest Island Authority

The applicant, Nagle, sought special leave to appeal to the High Court of Australia against a decision of the Full Court of the Supreme Court of Western Australia. The dispute concerned Nagle's claim for damages for personal injuries sustained while swimming at Rottnest Island, against the Rottnest Island Authority. Nagle's case at trial primarily alleged that the Authority had a duty of care to either remove dangerous submerged rocks or to warn the public of their presence.

The legal issues before the High Court revolved around the extent of the Authority's duty of care and the question of causation. At trial, the judge found no duty to remove the rocks, as they were largely beyond the Authority's jurisdiction at low water mark, and the claim was not framed as a duty to *cause* their removal. Regarding the duty to warn, the trial judge found a duty existed but held that it was not breached in a way that caused Nagle's injuries, as Nagle was aware of the rocks. The Full Court, however, took a different view, with a majority indicating they would have allowed an amendment to the pleadings to consider the causation aspect of removing the rocks. Furthermore, all three judges of the Full Court considered the trial judge's finding on causation regarding the warning to be erroneous.

The High Court was required to determine whether the Authority owed a duty of care to Nagle concerning the submerged rocks and, if so, whether a breach of that duty caused Nagle's injuries. The Full Court had indicated that Nagle had succeeded on appeal in relation to the duty to warn, as the trial judge's finding on causation was considered incorrect by all members of the Full Court. The Authority's jurisdiction to remove rocks beyond the low water mark, and the possibility of causing their removal, was also a point of contention, with a majority of the Full Court favouring an amendment to allow this issue to be argued. However, two judges of the Full Court also found that the injury was not reasonably foreseeable, a ground on which Nagle had failed at trial.