Underwater Facilities Assessment The site investigations team is made up of 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: Survey Fathometers Survey Vessels RTK GPS/DGPS Towed Underwater Video Systems Wave/Tide Gauges Total Stations