Q - As in "Quarterdeck"
There are ancient traditions of offering special deference to the quarterdeck. Greek, Roman, and Carthaginian warships all carried shrines which were given special respect. This continued into Christian times, and in medieval British warships, the religious shrine was set up on the quarterdeck. All hands were required to salute it by taking off their hats or caps. This led to the habit of saluting whenever one entered the quarterdeck.
Today, quarterdeck refers not to a specific deck, but to a ceremonial area designated as such by the captain. As in the days of sail, it is a place where the captain has special control and prerogatives.
(From Wikipedia, the free encyclopedia)
Luckily, I did not use this theme for yesterday's "P" - as in Poop=Deck!
Who knows what image I might have heaved upon you.