Cook'S Secret Instructions (1768): The Broken Mandate For Indigenous Consent

1. The Imperial Text: The Admiralty Instructions to Captain Cook

Issued by the British Admiralty on 30 July 1768, the 'Secret Instructions for Lieutenant James Cook, Commander of His Majesty's Bark Endeavour' represent one of the most legally consequential documents in modern Commonwealth history.^[1] Signed by Edward Hawke, Piercy Brett, and Charles Spencer, these naval orders directed Cook to observe the transit of Venus from Tahiti and then sail southward to discover the presumed great Southern Continent (Terra Australis Incognita).^[2] Critically, the second section of the instructions laid down explicit, mandatory legal conditions governing how Cook was required to interact with Indigenous populations and claim territorial sovereignty.^[3]

2. The Mandatory Legal Condition: 'With the Consent of the Natives'

The pivotal constitutional clause of the Secret Instructions commanded Cook regarding newly discovered inhabited lands in unequivocal terms: > 'You are also with the Consent of the Natives to take Possession of Convenient Situations in the Country in the Name of the King of Great Britain; Or: if you find the Country uninhabited take Possession for his Majesty by setting up Proper Marks and Inscriptions, as first discoverers and Possessors.'^[4] Under established eighteenth-century British law of nations, this royal instruction created a strict, conditional mandate. The Admiralty recognised that if a country was inhabited, territorial possession could lawfully be acquired only with the consent of the native inhabitants.^[5] Only if a territory was completely uninhabited was unilateral possession by symbolic flag-planting permitted.^[6]

3. The Unlawful Violation on Possession Island (1770)

On 22 August 1770, on Possession Island in the Torres Strait, Captain James Cook committed a catastrophic, premeditated violation of his Admiralty orders.^[7] Cook raised the British flag and proclaimed sovereign possession over the entire eastern coast of Australia from latitude 38° South to latitude 10.5° South in the name of King George III.^[8] Cook executed this proclamation knowing full well that the continent was densely inhabited; his own journals record multiple armed encounters with First Nations warriors and extensive observations of Aboriginal camps, fish traps, and cultivated fires.^[9] Cook never sought, negotiated, or received the consent of a single Indigenous person. His unilateral proclamation was an ultra vires act executed in direct breach of royal instructions.^[10]

4. The Illegitimacy of Derivative Sovereignty in Western Australia

The foundational illegality of Cook's action invalidates all subsequent derivative assertions of Crown sovereignty across the continent, including Western Australia in 1829.^[11] Because the initial root of Crown title was planted through an ultra vires act violating royal instructions, the Crown never acquired lawful radical title under international law.^[12] For the Bibbullmun Sovereign Nation, Cook's Secret Instructions stand as primary documentary proof that British colonisation began with an act of domestic and international lawlessness, establishing that inherent Indigenous sovereignty remains completely unextinguished.^[13]