Owners of SS Kalibia v Wilson

The Owners of the SS Kalibia appealed to the High Court of Australia from a decision of the Supreme Court of New South Wales. The dispute concerned an order made ex parte by a Judge in Chambers for the detention of the SS Kalibia, sought by a seaman, Wilson, to secure potential compensation for injuries. The owners argued that the Seamen's Compensation Act 1909 did not apply to the circumstances of the seaman's employment and that the Act itself was beyond the legislative power of the Commonwealth Parliament.

The High Court was required to determine two primary legal issues. Firstly, whether a small package carried by the chief officer from Adelaide to Brisbane, without freight or entry on the manifest, constituted "cargo" within the meaning of section 4 of the Seamen's Compensation Act 1909, thereby engaging the ship in the "coasting trade" as defined by the Act. Secondly, the Court had to consider the constitutional validity of the Act, specifically whether its provisions, particularly those relating to the coasting trade, fell within the Commonwealth Parliament's legislative powers under section 51(1) of the Constitution, and if not, whether the invalid provisions were severable from the valid ones.

The Court held that the small package was not "cargo" within the meaning of the Act, as it was carried as a gratuitous courtesy by the chief officer and did not involve a contractual relationship for reward on behalf of the shipowners. Consequently, the ship was not engaged in the coasting trade under the Act based on this transaction. Regarding the constitutional validity, the majority of the Court found that the Seamen's Compensation Act 1909, in its definition of "coasting trade," purported to regulate purely intra-State trade, which was beyond the scope of the Commonwealth's trade and commerce power under section 51(1) of the Constitution. The Court further determined that the invalid provisions relating to intra-State trade were not severable from the rest of the Act, as the Parliament had clearly expressed its intention to apply the Act to all trade between ports, regardless of whether it was inter-State or intra-State.

The High Court reversed the decision of the Supreme Court. The order for the detention of the SS Kalibia was set aside, and the Act was declared invalid in its entirety due to the inseparability of its valid and invalid provisions.