Mission selection screen
The main game screen - the mouse pointer changes to the appropriate function sprite when over hot spots. Here it a sextant denoting the navigation room is activated by clicking here.
The radio room is used initially as the password screen.
Once you have put in the correct password then you are given your mission briefing and can then access the various other ship stations, some others screens are:
The ship trimming screen
The periscope screen
The ship status screen
The sonar screen - when carrying out an order most screens show a digitised picture of the crewman who is implementing your command.