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aka Sous-Ingénieur Constructeur de la Marine ?
| Date from | Date to | Holder | Source |
|---|---|---|---|
| 1756 | Mathurin-Louis GeffroyFrench Designer Ship Builder Service 1742-1764 He built the 32-gun frigates the "Hermine" and "Opale" and the 28-barrel flutes of "Adour" and "Utile" . ?? listed on Jean Geoffroy | ref:1275 |