Gunnery captain represented a specific assignment found on particular Imperial warships, notably Star Destroyers. This officer held command over multiple gunnery officers, which included the chief gunnery officer. Furthermore, the gunnery captain was among the select few officers aboard a vessel possessing the necessary authorization to request an immediate external inspection of the ship's weaponry during a voyage. Approximately around the year 0 BBY, Bolvan occupied this role on the Imperial I-class Star Destroyer known as the Devastator.