Aboard a ship at the stern(d, u, w and se)

You are aboard a mighty ship at the stern. A gangplank leads southeast, back to the pier. In the timbers of the deck you notice a small hatch which leads down into the interior of the ship. Above you is a huge mainsail and mast. Gazing upwards you see the crow's nest.
The down door is closed.
The only obvious exits are down, up, west and southeast.