Site Investigations The site investigations team includes engineers, hydrographers and surveyors with demonstrated expertise in oceanography, geology and environmental science, specializing in field operations at remote locations in the Caribbean. Coastal Systems International, Inc. maintains full capabilities for coastal/marine surveying with the following representative hardware/software systems: Survey Fathometers Survey Vessels RTK GPS/DGPS GPS/GIS Integration Towed Underwater Video Systems Wave/Tide Gauges Total Stations Side-Scan Sonar