Probably high on the Richter scale. Scatarie Island, NS is now a wildlife preserve. Reefs and shoals extend as far out as a mile making this area dangerous Jupiter Inlet, Florida. Gulf Stream pulls vessel near to shoreline. Compensation and alertness needed.
Fog appears suddenly and razor sharp volcanic reefs are abundant.
Horseshoe Reef off Anegada Island in the Virgin Islands extends 20 miles out from the island. Many vessels have made this reef their final resting place. Artifacts are not allowed to be removed fron the islands that are under British rule. Russian vessels have dumped 20 nuclear reactors and warheads containing Plutonium in international waters near Northern Norway. Plutonium is non odorous and kills instantly.