Usage: Naval Nautical. Naval is applied to vessels, or a navy, or the things which pertain to them or in which they participate; nautical, to seamen and the art of navigation. Hence we speak of a naval, as opposed to a military, engagement; naval equipments or stores, a naval triumph, a naval officer, etc., and of nautical pursuits or instruction, nautical calculations a nautical almanac, etc.
Etymology: L. navalis, fr. navis ship: cf. F. naval. See Nave of a church