  L-1544/93--7/90; ADD OBSTN SOUTH OF "SHL" AT 30°19.81'N 88°33.8'W.  OBSTRUCTION MARKED WITH WOOD STAKE.  SOURCE OF LETTER IS U.S. POWER SQUADRON.
  H11384-- OPR-J376-NRT4-04;  Item not investigated.  Retain as charted.  (Updated CEH 4/2009)