Related Clues:
- Undersea vessel
- Voyager to the bottom of the sea
- All you want in substitute
- Deputise - complete form
- Long deli sandwich
- Underwater craft, briefly
- Deputy on bench in test
- Act as a substitute
- Take the place of figurehead not well at home
- U-boat, e.g
- Footlong, e.g
- Cousteau craft
- Prefix for the answers to starred clues, and word needed for those clues to make sense
- The Red October, e.g
- Prefix for way or marine