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Fenn Enterprises specializes in hydrographic surveys, including sidescan sonar surveys, derelict fishing gear and marine debris surveys, remote operated vehicles, and diving services. Owner Crayton Fenn has over 25 years of sidescan sonar survey experience and has surveyed an estimated 20,000 linear miles. The company designs and fabricates specialized equipment such as sonar towfish systems, winches, and hydraulic manipulators.

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deep/technical divingdredgesequipment design and fabricationgravity coreshydrographic surveysmagnetometersnet removalremote operated vehiclesscanning sonarsseismic reflectionsidescan sonar surveyssub-bottom profilersunderwater acoustic trackingvibrocore