Challenging puzzle for experienced crossword solvers
Vanished Signals of Oceanic Lore
A crossword exploring historic and lost maritime signals used for communication at sea.
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Across
- 1. Lookout point for spotting signals
- 2. Pioneer of wireless maritime communication
- 4. Visual signaling using flags or arms
- 5. Narrow flag used in naval signals
- 6. Sound signal often used in fog
- 11. Technology that superseded older signals
- 13. Tool for distant ship signal observation
- 15. Old term for signal flag clusters
Down
- 3. Floating lighthouse marking hazards
- 7. Dots and dashes code for telegraphy
- 8. Audible maritime warning instrument
- 9. Daytime signal replaced by light at night
- 10. Sound device warning ships
- 12. Raising flags for message transmission
- 14. Alphabet used to clarify letter signals
- 16. Early flashing light signaling device
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