This critical nav aid marks a turn in the narrow and sparsely marked entrance channel into Largo Sound, a popular anchorage for vessels with less than 4.5ft draft. See http://cruisersnet.net/156246 for recent discussion on the entrance channel.
FLORIDA – MIAMI TO MARATHON AND FLORIDA BAY – LARGO SOUND CHANNEL: Hazard to Navigation
Largo Sound Channel Light 9 (LLNR 11815) is destroyed. The steel pile may pose a hazard to navigation. Wreckage is marked with a TRLB WR9, Fl Q G. Mariners are advised to exercise extreme caution while transiting the area.
Chart 11451 LNM 05/17