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 | HELISOMA | 1967 | |
| Peter Brian Coxwell | HAUSTRUM (1) | 1967 | |
| Peter Brian Coxwell | HINEA | 1967 | |
| Vic Hubbert | HEMISINUS | 1965 | |
| Vic Hubbert | HINEA | 1965 | |
| James Macintyre | DAVILA | 1963 to 1964 | |
| Mike Parkin | ARIANTA (1) | 1964 |