MilBases.com / Connecticut / Coast Guard Map of Marine Safety Lab Coast Guard Base Groton, CT Overview About Directory Photos Map Jobs Pay Scale Weather Coordinates41° 24' 07.20" N 72° 05' 20.40" W Latitude & longitude41.402, -72.089 MGRS18T YL 43339 87474 UTM18N 743339 4587474 Get directions with Google Maps · Open in OpenStreetMap