Situation: I am standing in front of the boat, tidying up some documents and to my left towards 9 o'clock there is a couch.
Alternative situations: I write something down on the board and there is a picture to my left. I am standing on top right corner of the room. Corner of couch to my backside reading the words written on the board in front of me.
Question: If I need to let some fresh air into room, what can I open behind me?