| Name: | ALERT |
| Type: | Tug |
| Launched: | 1837 |
| Completed: | 05/04/1837 |
| Builder: | Andrew Woodhouse |
| Yard: | South Shields |
| Yard Number: | |
| Dimensions: | 54grt, 14nrt, 63.6 x 14.8 x 7.8ft; (1845: 66grt, 18nrt, 72.1 x 15.2 x 8.1ft); |
| (1857: 58grt, 14nrt, 75.3 x 16.4 x 7.8ft) | |
| Engines: | 1cyl (27.5 x 42ins), 26hp; (by 1857: 34hp) |
| Engines by: | TD Marshall, South Shields |
| Propulsion: | Paddle |
| Construction: | Wood |
| Reg Number: | 7647 |
| History: | |
| 22/04/1837 | T Stoker, North Shields; registered at Newcastle |
| 14/11/1839 | T Stoker Snr & Jnr, North Shields |
| 13/02/1847 | T Stoker Jnr & J Stoker, North Shields |
| 15/02/1847 | T Stoker Jnr, North Shields & R Stoker, Leith |
| 20/03/1847 | T Stoker Jnr, Middlesbrough & R Stoker, Leith; registered at Stockton |
| 03/06/1853 | M Stoker & EE Oliver, North Shields; registered at Shields |
| 12/08/1856 | W Burrell, North Shields |
| 26/02/1857 | F Anderson & GT Day, North Shields and D & J Morris, Newcastle |
| 01/06/1857 | F Anderson, GT Day and D & J Morris, Newcastle; registered at Newcastle |
| 28/05/1858 | Unknown owner |
| No later history known | |
| Comments: | 10/06/1845: Rebuilt by W Stoker at North Shields |
| 28/05/1858: Register closed as "Sold at Archangel to Overseas owner" |