Survey data is referenced to Louisiana South State Plane Coordinates North American Datum 1983 with soundings referenced below Mean Low Gulf in U.S. Survey Feet.

G.I.W.W. Chandeleur Alt. Route
   Survey title Survey date
       Sheet Name    Stationing PDF XYZ SHP
   Breton Sound 12/16/2015
       GC_01_B2G    0+00 to 70+00 PDF XYZ Shape
   Breton Sound 12/16/2015
       GC_02_B2G    70+00 to 210+00 PDF XYZ Shape
   Breton Sound 12/16/2015
       GC_03_B2G    210+00 to 350+00 PDF XYZ Shape
   Breton Sound 12/16/2015
       GC_04_B2G    350+00 to 490+00 PDF XYZ Shape
   Breton Sound 02/10/2015
       GC_05_B2G    490+00 to 630+00 PDF XYZ Shape
   Breton Sound 02/10/2015
       GC_06_B2G    630+00 to 770+00 PDF XYZ Shape
   Breton Sound 02/11/2015
       GC_07_B2G    770+00 to 920+00 PDF XYZ Shape
   Breton Sound 02/11/2015
       GC_08_B2G    920+00 to 1060+00 PDF XYZ Shape
   Breton Sound 02/11/2015
       GC_09_B2G    1060+00 to 1200+00 PDF XYZ Shape
   Chandeleur Sound 02/11/2015
       GC_10_B2G    1200+00 to 1340+00 PDF XYZ Shape
   Chandeleur Sound 02/13/2015
       GC_11_B2G    1340+00 to 1480+00 PDF XYZ Shape
   Chandeleur Sound 03/11/2015
       GC_12_B2G    1480+00 to 1620+00 PDF XYZ Shape
   Chandeleur Sound 03/11/2015
       GC_13_B2G    1620+00 to 1770+00 PDF XYZ Shape
   Chandeleur Sound 03/11/2015
       GC_14_B2G    1770+00 to 1910+00 PDF XYZ Shape
   Chandeleur Sound 03/11/2015
       GC_15_B2G    1910+00 to 2050+00 PDF XYZ Shape
   Chandeleur Sound 03/11/2015
       GC_16_B2G    2050+00 to 2190+00 PDF XYZ Shape
   Chandeleur Sound 03/11/2015
       GC_17_B2G    2190+00 to 2330+00 PDF XYZ Shape
   Chandeleur Sound 03/11/2015
       GC_18_B2G    2330+00 to 2480+00 PDF XYZ Shape
   Chandeleur Sound 03/11/2015
       GC_19_B2G    2480+00 to 2620+00 PDF XYZ Shape
   Chandeleur Sound 03/11/2015
       GC_20_B2G    2620+00 to 2760+00 PDF XYZ Shape
   Chandeleur Sound 03/11/2015
       GC_21_B2G    2760+00 to 2900+00 PDF XYZ Shape
   Chandeleur Sound 03/11/2015
       GC_22_B2G    2900+00 to 3040+00 PDF XYZ Shape
   Gulfport Sound Channel 03/11/2015
       GC_23_GSC    3040+00 to 3180+00 PDF XYZ Shape
   Gulfport Sound Channel 03/10/2015
       GC_24_GSC    3180+00 to 3310+00 PDF XYZ Shape
   Gulfport Sound 03/10/2015
       GC_25_GPS    3310+00 to 3430+00 PDF XYZ Shape
   Gulfport Sound 03/10/2015
       GC_26_GPS    3430+00 to 3480+00 PDF XYZ Shape