The Northumberland Islands are to the south-east of the city of Mackay roughly between the latitudes 21°S and 22°S. All islands are of the continental type. The island group was named by James Cook during his historic voyage along Australia's eastern seaboard in 1770, after the First Duke of Northumberland, Hugh Percy.[2] Both Cook and Matthew Flinders make note of the island group in their journals, Cook describing them as such:
As soon as we got round the Cape [Cape Townshend] we hauld our wind to the Westward in order to get within the Islands which lay scatter'd up and down in this bay [Shoalwater Bay] in great number, and extend out to Sea as far as we could see from the Masthead; how much farther will hardly be in my power to determine; they are as Various in their height and Circuit as they are numerous.[3]
In 1855, a botany expedition led by naturalist Frederick Strange visited the islands on his ship Vision. Four of the expedition were killed by Aboriginal people at Middle Percy Island. Those killed were Frederick Strange and his assistant Richard Spinks, William Spurling (ship's mate) and Andrew Gittings (ship's cook and steward). Captain Chimmo of the Royal Navy vessel HMS Torch, sailed to the island and conducted an investigation. He decided to take ten of the islanders prisoner. These prisoners, including three women and three children, were sent to Sydney for trial. One child died in custody and the rest were eventually shipped back to Gladstone.[4][5]
The island group is remote, and apart from charter flights to Marble Island they are accessible only by private yacht.
The Northumberland Islands are further subdivided into smaller groups: the Bedwell Group, Beverley Group, Broad Sound Islands, Duke Islands, Flat Isles, Guardfish Cluster and Percy Isles (within the locality The Percy Group). The islands are listed below, with the geographical coordinates of the largest islands given. Only the major islands of each group are listed.
