William Henry Giles Kingston,
How Britannia Came to Rule the Waves
“ A two-decked ship has no middle-deck, but possesses only a main and lower-deck, besides the before-mentioned quarter-deck, gangway, and forecastle. The deck on which a frigate’s single battery is carried is always called her main-deck, because the sailors are wont to denominate the upper-deck of every ship carrying guns the main-deck. In a sloop-ship or corvette the only deck, without any one above it on which guns are carried, is thus invariably called the main-deck, and, as has before been said, the one beneath it on which the officers and crew live, and which has no guns, the gun-deck. ”
