| Name: | MARIANNE BRIGGS |
| Type: | Cargo Ship |
| Launched: | 22/01/1874 |
| Completed: | 03/1874 |
| Builder: | John Readhead & Co |
| Yard: | Lawe Yard, South Shields |
| Yard Number: | 101 |
| Dimensions: | 630grt, 396nrt, 191.0 x 27.8 x 12.1ft |
| Engines: | C2cyl (23.5 & 44 x 30ins), 80nhp |
| Engines by: | John Readhead & Co, South Shields |
| Propulsion: | 1 x Screw |
| Construction: | Iron |
| Reg Number: | 67812 |
| History: | |
| 20/03/1874 | Yorkshire Coal & Steamship Co Ltd, Goole |
| 1881 | Soc Rouennaise de Transport Maritimes a Vapeur, Rouen |
| 1881 | Renamed MARCEAU |
| 1883 | Co-operative Wholesale Society Ltd, Goole; renamed MARIANNE BRIGGS |
| 1887 | Renamed UNITY |
| 10/10/1895 | Sank |
| Comments: | 10/10/1885: Sank after a collision with ECLIPSE off Honfleur |
| On a voyage from Garston & Swansea to Rouen carrying coal & general cargo |