- References
{{Other ships|French ship Diadème}}{{Infobox ship image| Ship image= | French ship|Robuste|1806|2}}, sister-ship of the Diadème
}}{{Infobox ship career | Hide header= | Ship country=France | France|naval}} | Ship name=Diadème | Ship namesake=Diadem | Ship ordered=29 October 1807 | Ship builder=Lorient | Ship original cost= | Ship laid down=November 1807 | Ship launched=30 November 1811 | Ship acquired= | Ship commissioned= | Ship decommissioned= | Ship in service= | Ship out of service= | Ship renamed= | Ship struck=21 January 1856 | Ship reinstated= | Ship honours= | Ship captured= | Ship fate= | Ship status= | Ship notes=
}}{{Infobox ship characteristics | Hide header= | Header caption= | Bucentaure|ship of the line}} | Ship tons burthen= | 55.88|m|ftin|abbr=on}} (overall)- {{convert|53.92|m|ftin|abbr=on}} (keel)
| 15.27|m|ftin|abbr=on}} | Ship height= | 7.63|m|ftin|abbr=on}} | Ship propulsion=Sail | 2683|m2|ft2|0|abbr=on}} | Ship speed= | Ship complement=866 | Ship armament=*86 guns- 30 × 36-pounders
- 32 × 24-pounders
- 18 × 12-pounders
- 6 × 36-pounder howitzers
| Ship notes=
}} | Diadème was an 86-gun Bucentaure-class 80-gun ship of the line of the French Navy, designed by Jacques-Noël Sané. Commissioned in Lorient in January 1812, Diadème was disarmed at the Bourbon Restoration. She had major refits in 1822 and 1833, and was reactivated in 1826 to join the squadron of the Mediterranean. From 1856, she was used as a barracks hulk. References- Roche, Jean-Michel, Dictionnaire des Bâtiments de la flotte de guerre française de Colbert à nos jours, tome I
{{Bucentaure class ship of the line}}{{DEFAULTSORT:Diademe}} 4 : Ships of the line of the French Navy|Ships built in France|Bucentaure-class ships of the line|1811 ships |