Derek Kelsall
| Nationality: |  |
| Born: | 15 May 1933 |
| Deceased: | 11 December 2022 |
| Boat type | Design Year | Category |
|---|---|---|
| K 26 | ? | Trimaran |
| K-39 S.R. | ? | Trimaran |
| Tonga 40 S. R. | ? | Catamaran |
| Tonga Lima 31 | ? | Catamaran |
Naval Architects
| Nationality: | |
| Born: | 15 May 1933 |
| Deceased: | 11 December 2022 |
| Boat type | Design Year | Category |
|---|---|---|
| K 26 | ? | Trimaran |
| K-39 S.R. | ? | Trimaran |
| Tonga 40 S. R. | ? | Catamaran |
| Tonga Lima 31 | ? | Catamaran |