Wooden paddle steamer St Columb, built J Wood, Glasgow 1834
163 grt, 126 x 28.2 x 12.2 ft; engines 130hp
On voyage Glasgow, via Campbeltown, to Londonderry
5th April 1844, struck reef [Scart rocks] near Sheep Is, off Sanda Is.
Crew and passengers (about 70) saved in ship's boat, then taken to Sanda Is.
Vessel refloated and taken to Glasgow for repairs.

From Arbroath Guide - Saturday 13 April 1844

NARROW ESCAPE OF A STEAMER FROM SHIPWRECK - On Friday last, the steamer St Columb left Glasgow for Londonderry. After landing some passengers at Campbelton, she left that port about five o'clock and proceeded along the shore on her voyage. About half past seven, the weather being very hazy, she struck on a sunken rock near the Sanda Isle. As may be supposed, the passengers were thrown into the greatest consternation, and much noise and confusion prevailed. The captain proceeded to back her off; but the crew, remembering the fate of the Pegasus, remonstrated, and prevailed on him to keep his engine slowly going, to keep her on the rock, lest she should surge off and sink in deep water, there being seven and a half fathoms water astern, while her bow was on the rock. The small boat was then lowered to convey the passengers and crew to Sheep Isle, about ten minutes' pull distant. This was a tedious operation, as she could only take eight or nine passengers at once, while there was in all almost seventy souls aboard. The females and children were first sent off, and afterwards the passengers and crew, and all were safely landed on the Islet, some of them, however, drenched to the middle in landing. Here they passed a most uncomfortable night, without fire, shelter, provisions, or change of raiment. Next day, they got some provisions from the steamer, which allayed their hunger a little. In the course of the forenoon, the whole party were ferried over to the Island of Sanda, on which there is a farm-steading, where some shelter and scanty refreshments were received.

During the day, the steamer St Kiaran came to their relief. She lightened the St Columb, towed her off the rock, and taking all the passengers from the island, conveyed them back to Campbelton. The St Columb, which does not appear to have received great injury, returned to Greenock, and subsequently, we are told, to Glasgow, for repairs. Among the passengers by the St Columb, there was Captain Tilden, of the Marines, with his lady and family, and a party of thirty Marines. The conduct of this lady is very highly spoken of. While all else were in confusion, and while screams and wailing prevailed, she exhibited the most heroic coolness, and endeavoured by her conduct to infuse that coolness into others; she saw her children and servants safely put into the boat and sent off, but would not leave the vessel till her husband was ready to leave also. We are happy to add that no life was lost, nor serious accident met with, from this untoward event. From the circumstance of the vessel returning to Greenock, we suppose the leak has not been very serious, and that the vessel, if backed off, might have returned with her passengers to Campbelton. But no could tell what the nature of the leak was, and it was most decidedly the wisest plan - to keep her on the rock till all the passengers were placed beyond danger.