Definition of "upper deck" []

• The highest deck of the hull, extending from stem to stern. (noun)
• The topmost deck of any vessel; the spar deck.

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• "Fumigation consisted of exploding gunpowder in every part of Alexander below her upper deck and sealing the hatches fast."
• "“I have seen the largest battleships apparently sucked under until only the superstructures on the upper deck were visible when they would slowly rise from their submergence and the water pour off their decks as it might from some huge turtle … [coming] to the surface.”"
• "Her bridge and foremast were shot away, her upper deck a mass of twisted steel, half her crew dead or wounded."