Long Island Marine Surveyor Company P.O. Box 542, Sayville, NY11782 The Long Island Marine Surveyor Company is a group of three professional surveyors working in the industry for more than…More 20 years. The company conducts surveys on wood, fiberglass, aluminum and steel yachts, which can be performed under water, at dockside or in a dry dock. The surveyors' mission is to provide the most comprehensive, complete, accurate and professional marine survey possible. To schedule an appointment, call the Long Island Marine Surveyor Company during regular business hours.