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Subject
- History49
- Pilot guides27
- Navigation16
- History, Naval14
- Confederate States of America. Navy12
- Shipwrecks11
- Shipping9
- Discovery and exploration7
- Spain. Armada7
- Lighthouses6
- United States. Navy6
- Warships6
- Merchant mariners5
- Naval operations5
- Colonies4
- Shipbuilding4
- Ships4
- Underwater archaeology4
- Defenses3
- Great Britain. Royal Navy3