| Name: | SIR ISAAC NEWTON |
| Launched: | |
| Completed: | 18/10/1853 |
| Builder: | A Woodhouse, South Shields |
| Yard Number: | |
| Dimensions: | 78grt, 29nrt, 80.0 x 15.0 x 8.9ft; (1861: 69grt, 20nrt, 83.3 x 16.2 x 9.4ft) |
| Engines: | SL1cyl (32.5 x 42ins), 30nhp; (1861: 38nhp) |
| Engines By: | JP Rennoldson, South Shields |
| Propulsion: | Paddle |
| Construction: | Wood |
| Reg Number: | 10186 |
| History: | |
| 18/10/1853 | JP Rennoldson, South Shields; registered at Shields |
| 1854 | Clyde Shipping Co, Glasgow |
| 11/1856 | AG Kidston et al, Glasgow |
| 09/1864 | JP Rennoldson, South Shields |
| 12/1864 | Joseph Hazell, Cardiff |
| 1865 | Registered at Cardiff |
| 1869 | Broken up |
| Comments: | 11/1856: AG Kidston & family purchased the Clyde Shipping Co |
| 01/04/1864: Ashore at Gartsdyke Bay, Firth of Clyde. Subsequently refloated | |
| 09/1864: Sold to JP Rennoldson, South Shields as part payment for another tug |