Latitude and longitude of Submarine mines in United States harbor defense

Satellite map of Submarine mines in United States harbor defense

The modern era of defending American harbors with submarine mines (originally referred to as "torpedos") began in the post-Civil War period.

Latitude: 42° 19' 45.80" N
Longitude: -70° 57' 29.84" W

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GPS coordinates of Submarine mines in United States harbor defense, United States

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