Related Clues:

• Underwater vehicle
• Chapter opener?
• Ship that can go underwater
• Big, long sandwich
• Stand in place on island in river
• Hoagie, by another name
• Quiznos order
• Lengthy lunch?
• Pinch hitter, say
• Quiznos purchase
• Regular payment for newspaper employee
• Aquatic vessel
• Stand in river maintaining exercise, upright
• Form of transport coming up, one has a periscope
• Book American returns by boat