At the beginning of a new game session, you can choose to enable alternate skins for the train and the command ship.
Please be advised, the skins cannot be changed once you have started the game session.
Once you reached the 4th citizen tier, the Engineers, you will be able to build a Railway that connects the Oil Refinery with the Small Oil Harbour. The default locomotive will be replaced by the Imperial Train.
The Imperial Command Ship will replace the starting vessel.
You can access the 1602 Memorial via the decoration menu of the Farmers.