Related Clues:
- Web site aid
- Speed checker
- Sub detector
- Underwater detection system
- Submarine-detecting system
- Page of cartography
- Salvager's equipment
- 'The Amazing Race' prop
- Air-traffic controller's device
- Salvaging aid, perhaps
- Help for the lost
- Plan, with ''out''
- 'Amazing Race' aid
- Auto club offering
- Deep-sea fishing aid