The SS Alacrity was a 353 gross tons tug built in Graville, France in 1893 as Jean Bart and was operated by the Dunkirk Chamber of Commerce. She was sold in 1902 to Howard Smith and renamed Alacrity for tug service in Port Phillip, Australia. During the First World War, she was purchased by the Royal Australian Navy in 1917 for use as a patrol vessel, inspection vessel, and minesweeper based at Fremantle. She was never commissioned. After being sold in 1925, she was slated for breaking up was moored in Jervoise Bay, Western Australia, however a fierce gale in Cockburn Sound wrecked her in 1931.