The Beagle was an iron steamship built by Tod & McGregor of Partick and launched on 21st July 1864 to the orders of Messrs G & J Burns of Glasgow. The ship was a small cargo passenger steamer (31 metres long, 10 metres in beam), working mainly between the ports of Belfast and Glasgow, offering a return trip with a first class cabin for 30 shillings.
She was inward bound for Glasgow on 8th November 1865 when she was involved in a collision with the steamer Napoli off Skate Point, Great Cumbrae and sank shortly afterwards. The Napoli struck the Beagle on her port side, 12 feet aft of her forecastle, slicing through the hull and decking to the foredeck hatch. The large open forehold quickly filled with water as the vessels separated. The entire crew, some of whom had been rudely awakened by the collision, were rescued by a passing tug, the Pearl, which had been inshore of the Beagle when the collision occurred. Only nine minutes after the collision took place, the Beagle sank. The Napoli sustained damage to her stern and bow platinf and returned to Greenock under her own steam. She was towed to Glasgow the following day for repairs.