Related Clues:

• Codes
• It's the cheapest way to go by sea
• Cheapest accommodation on a passenger ship
• Old word for cheapest passenger accommodation in ship
• Convert into code
• Cheap accommodation on a passenger ship
• Change into coded version
• Cheap accommodation on a passenger ship
• Converts ordinary language into code
• From the backside you can tell how old the beast is, it seems
• You may be able to tell how old the beast is by the stern
• At the back you'll find how old the beast is
• How old does the beast have to be not to be first-class?
• Thus you might find how old the beast is at the stern
• Can you tell how old the beast is from the back of it?