extra 3rd mate
| Name | Tanker | Period | Details |
|---|---|---|---|
| Michael Mancey | Holospira | 1968 | |
| Edwin Mortimer | Haustellum | 1959 | |
| Edwin Mortimer | Acavus (2) | 1959 | |
| Syd Lees | Mactra (2) | 1972 | |
| Syd Lees | Horomya | 1972 | |
| Dave Freeman | Siam (2) | 1977 | |
| Chris Spencer | Methane Progress | 1970 | |
| Chris Spencer | Donacilla (2) | 1967 | |
| David Rayfield | Helcion (2) | 1963 | |
| David G Williams | Helicina | 1956 | |
| James Macintyre | Axina | 1964 | |
| Ben Palmer | Lembulus (2) | 1977 | |
| Peter Brian Coxwell | Haustrum (1) | 1967 | |
| Peter Brian Coxwell | Hinea | 1967 | |
| Peter Brian Coxwell | Helisoma | 1967 | |
| Vic Hubbert | Hemisinus | 1965 | |
| Vic Hubbert | Hinea | 1965 | |
| James Macintyre | Davila | 1963 to 1964 | |
| Mike Parkin | Arianta (1) | 1964 |