Related Clues:

• Semi
• Crate, so to speak
• Convertible or coupe, e.g.
• Kind of service
• Coal carrier
• See 8-Down
• Flat-bottomed boat
• Carrier in a canal
• Square-ended vessel
• See 38-Across
• Kaiser, once
• Convertible, for one
• Mercury or Saturn, but not Mars
• Jam ingredient?
• 16-year-old's want