The doors are for the mooring supervisor, so he can through the heaving lines etc. I have to agree, I don't know what he would be doing standing there as the ship is backing out, I can understand when it is coming in. He can see all the forward lines from that little platform
JET - In answer to your question, this thing would not go near a North Atlantic hurricane, if it did it would be structurally unsafe. Top heavy vs bottom heavy, forward superstructure too close to bow, bow meant to hammer 15 ft waves away rather than slice through and deflect 50ft waves, too many points of entry for really heavy seas (look at the balconies), hull approx 55% thickness of transatlantic liner requirements. Leave this sort of boat to the chavs.