The SS (RMS) Mona's Isle (III), built by Caird & Co. at Greenock and launched on 16 May 1882, was a notable paddle steamer serving with the Isle of Man Steam Packet Company until her sale to the Admiralty in 1915. She measured approximately 330 feet 7 inches in length, with a beam of 38 feet 1 inch and a depth of 15 feet 1 inch. Her design included accommodation for 56 crew members and a passenger capacity of 1,561, making her one of the largest and most well-appointed vessels in the company's fleet at the time. Powered by engines developing 4,500 indicated horsepower, Mona’s Isle achieved a service speed of 18 knots, a remarkable feat for her era. Her engines were oscillating high-pressure types, operating at 90 psi, with a 90-inch stroke, and featured a notably large low-pressure cylinder of 112 inches diameter, underscoring her advanced engineering. Mona's Isle was renowned for her speed and comfort, often making the Liverpool-Douglas crossing in under four hours. She was the first of five similar paddle-steamers introduced between 1882 and 1889, representing a significant technological advancement for the company. Her service record included several notable events: in June 1884, she suffered a mechanical failure mid-channel, requiring assistance from the vessel King Orry, which towed her to Douglas; her structural integrity was tested in 1885 when heavy seas damaged her paddle wheels, leading to reinforcement and the fitting of new floats in 1886. In 1892, she ran aground at Scarlett Point during foggy conditions but was refloated after assistance from the Tynwald and a rescue operation involving rockets and ladders. Throughout her service, Mona’s Isle also underwent updates, including the installation of electric lighting in 1895. She briefly participated in the Fleet Review at Spithead in 1902. Sold to the Admiralty during World War I, she was converted into a net-laying vessel for anti-submarine work, notably participating in salvage operations off the Irish coast, recovering valuables from a sunken Dutch steamer. Her wartime service included patrols and rescue missions, but after the war, she was deemed unfit for further service and was broken up in September 1919 by Thos. W. Ward at Morecambe. The vessel's history reflects her importance both as a fast, luxurious passenger steamer and as a versatile auxiliary during wartime operations.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.