  LNM46/96-- USCG; LNM added an 21 foot obstruction at 27°47'10.5" - 82°35'42.2".
  Bp164418--  Revised least depth from 21 to 20 feet.  (CEH 2/2009)
  H12017-- OPR-J417-NRT1-09; AWOIS 14436 detected in 200% SSS coverage and investigated using MBES. Le