| Name: | SAN LUIS |
| Type: | Hydrographic Ship |
| Launched: | 26/10/1927 |
| Completed: | 1928 |
| Builder: | R & W Hawthorn, Leslie & Co Ltd |
| Yard: | Hebburn |
| Yard Number: | 548 |
| Dimensions: | 687grt, 213nrt, 196.5 x 33.0 x 14.0ft |
| Engines: | Oil engine, 4SCSA, Werkspoor type, 190nhp |
| Engines by: | R & W Hawthorn, Leslie & Co Ltd, Newcastle |
| Propulsion: | 1 x Screw, 12.0knots |
| Construction: | Steel |
| Reg Number: | n/a |
| History: | |
| 1928 | Government of Argentina - Argentine Navy |
| 1937 | Renamed BAHIA BLANCA |
| 1964 | Stricken |
| Comments: | Allocated pennant number Q7 |
| 1964: Stricken from navy list & sold to Bonellí V Dodero Srl, Buenos Aires | |
| Probably broken up |
Above photo as SAN LUIS is courtesy of Kevin Blair
Above photo as BAHIA BLANCA is courtesy of Histarmar