 LNM 34/97--8th CGD, 8/19/97; Add symbol: "Submerged Obstruction(PA)" and legend: "Diffuser Pipeline Riser, clearance 36 ft" at 29 08 59.0 N  89 53 51.0 W.  Cartographer added a submerged Obstn PA (cov 36 ft) to NOS chart 11352. (3/28/12 KSJ)