[cajun]

I cleaned up the table that I provided to include DM.D values.

DMS_________________________________DM.D__________ ___________
N 29° 47' 29.9760" W 91° 52' 20.2476" TP1 N 29° 47.4996' W 91° 52.3375'
N 29° 48' 19.4142" W 91° 51' 59.5938" TP2 N 29° 48.3236' W 91° 51.9932'
N 29° 48' 18.7992" W 91° 50' 58.3506" TP3 N 29° 48.3133' W 91° 50.9725'
N 29° 48' 02.1132" W 91° 50' 46.2444" TP4 N 29° 48.0352' W 91° 50.7707'
N 29° 48' 01.4940" W 91° 51' 28.9722" TP5 N 29° 48.0249' W 91° 51.4829'

Please keep in mind that the values were converted from LORAN C and have an accuracy of +- 100'.

This survey was done when the Port of Iberia was studying the feasibility of digging a deep water channel from the port, through Vermillion Bay, to Southwest Pass.
They did not want the Trash Pile to be affected by the channel. Since the water was too shallow to use side scanning sonar, we utilized underwater cameras and divers to determine the boundaries. At the time GPS was not available and we used Loran C to determine the location.The project never did materialize.