Active: 1959 – 1981
Founded by Ray Walsh and Len Wakefield as Thames Structural Plastics, originally to build fiberglass components for a number of industries. The emphasis turned to the manufacture of boats early on. The first sailing yacht was the 23' SNAPDRAGON (1962). Expansion came in a number of stages and the company started to build it's own factory at Canvey Island, Essex. (1965)
As TSP Ltd., the company began doing the moldings for other boat builders; Thames Marine became the name for selling their own models.
There was also a branch that built power boats and another to build the Prout line of catamarans.
No longer in business.
| Name | LOA (ft) | First Built | Last Built | Rig |
|---|---|---|---|---|
| BANDIT 18 | 18 | 1980 | — | Fractional Sloop |
| DIAMOND 27 | 27 | 1963 | 1966 | Masthead Sloop |
| GP14 | 14.01 | 1949 | — | Fractional Sloop |
| INVADER 22 | 22 | 1975 | — | Masthead Sloop |
| MIRAGE 26 (UK) | 25.82 | 1978 | — | Masthead Sloop |
| MIRAGE 2700 (UK) | 25.42 | 1979 | — | Masthead Sloop |
| MIRAGE 28 (FELTHAM) | 28.33 | 1977 | — | Masthead Sloop |
| MIRAGE 29 (UK) | 28.83 | 1983 | — | Masthead Sloop |
| MIRAGE 37 (FELTHAM) | 36.17 | 1974 | — | Masthead Ketch |
| ROBBER 3E | 24.75 | 1977 | — | Masthead Sloop |
| SNAPDRAGON 21 | 21 | 1970 | — | Masthead Sloop |
| SNAPDRAGON 23 | 23 | 1962 | — | Masthead Sloop |
| SNAPDRAGON 24 | 24.5 | 1962 | — | Masthead Sloop |
| SNAPDRAGON 26 | 26 | 1966 | 1969 | Masthead Sloop |
| SNAPDRAGON 27 MK II | 27.18 | 1974 | — | Masthead Sloop |
| SNAPDRAGON 29 | 29 | 1971 | — | Masthead Sloop |
| SNAPDRAGON 600 | 19.67 | 1970 | — | Masthead Sloop |
| SNAPDRAGON 670 | 22 | 1963 | — | Masthead Sloop |
| SNAPDRAGON 747 | 24.5 | 1964 | — | Masthead Sloop |
| SNAPDRAGON 890 | 29 | 1971 | — | Masthead Sloop |
| THOMPSON 24 | 24 | 1968 | — | Masthead Sloop |