You are at the dock and have just finished taking on cargo for your transoceanic trip. The engineer notifies you that the boat has a significant list towards the port side. Remember, listing means the vessel is leaning towards one side. Before you leave the harbor, some ballast water will need to be taken on to trim the ship, making it level. Click on the Ballast Tank, port or starboard, that you would like to fill before leaving the harbor.