Wooden paddle steamer Dophin built James Lang, Dumbarton, 1834
117 grt, 73 nrt, 97 x 16 x 6.5 ft
Re-engined 1840 by Johnson & Co., Liverpool, 56hp.
Served in Clyde; as a Mersey Ferry; from Pwllheli and finally, from 1848, from Sligo.
Voyage Sligo to Irvine with oats, leaky and abandoned
Foundered 5 miles NNW of Fanad Light (Lough Swilly)
All crew saved in own boat.

Derry Journal - Wednesday 28 November 1855
  Loss of the Steamboat Dolphin. On Friday night[17 November 1855] last this vessel, the property of Moses Monds and Co., of this town, was lost whilst on her way from Sligo to Irvine in Scotland, with a cargo of oatmeal. It appears that whilst passing the Fannet[Fanad] Light off Lough Swilly head, she suddenly sprung a leak and shortly afterwards foundered. We are glad to state that all hands on board were saved. We understand that both vessel and cargo were insured. Sligo Independent.

Lloyd's List quotes her sinking 5 miles NNW of Fanad Light - at the western entrance to Lough Swilly.