Positions quoted in the Temporary Notice reproduced below are referred to an UNDETERMINED datum and are NOT COMPATIBLE WITH THIS ENC. Some or all of the information contained in this Notice to Mariners may have been included in the ENCs affected. 4666(T)/16 WEST INDIES — Bahamas — Great Bahama Bank — Lights. Source: Bahamas Maritime Authority 1. Until further notice, the following lights are temporarily extinguished: Light Position Fl.2s20ft PA 25° 30' .0N. , 78° 13' .9W. Fl.4s20ft PA 25° 28' .5N. , 78° 25' .6W. Fl.2s20ft PA 25° 40' .9N. , 78° 39' .5W. Fl.4s20ft8M PA 25° 27' .4N. , 79° 01' .7W. North Rock Fl.3s40ft8M 25° 48' .3N. , 79° 16' .7W. 2. Mariners are advised to navigate with caution in the area. (Undetermined Datum)