Answer: topside

AnswerCrossword Clue
TOPSIDE

On deck

TOPSIDE

Up on the deck

TOPSIDE

On deck, on ships

TOPSIDE
On deck: Colloq.
TOPSIDE
Above the main deck of a ship.
TOPSIDEOn deck.
TOPSIDEAbovedecks.
TOPSIDEUp on deck
TOPSIDEMain deck
TOPSIDEHighest level
TOPSIDEOpposite of below
TOPSIDEOn the main deck
TOPSIDEOn the open deck
TOPSIDENot belowdecks
TOPSIDEUpper surface