Frigate lieutenant

This article is about the OF-1a (senior) rank Frigate lieutenant. For the equivalent rank in the naval forces K.u.k., Croatia, Serbia, and Slovenia, see Fregattenleutnant.

Flag officers:
Naval officer ranks
Admiral of the fleet • Fleet admiral • Grand admiral Admiral • General admiral Vice admiral • Squadron vice-admiral • Lieutenant admiral Rear admiral • Counter admiral • Divisional admiral Commodore • Flotilla admiral
Senior officers:
Captain • Capt at sea • Capt of sea and war • Ship-of-the-line Capt Commander • Frigate captain Lieutenant commander • Corvette captain
Junior officers:
Captain lieutenant • Lieutenant • Ship-of-the-line lieutenant Frigate lieutenant • Lieutenant (junior grade) • Sub-lieutenant Corvette lieutenant • Ensign Midshipman

Frigate lieutenant is a rank in some navies, especially those of Spain (Spanish: Alférez de Navío) and Latin America, roughly equivalent to a sub-lieutenant in the Royal Navy or a lieutenant (junior grade) in the US Navy. The French Navy equivalent is a ship-of-the-line ensign (first class) (French: enseigne de vaisseau de première classe).

The NATO rank code is OF-1 (senior)