According to our records, this business is located at 1604 W Jones Ave. in McHenry (in McHenry County), Illinois 60051, the location GPS coordinates are: 42.2850779 (latitude), -88.2268664 (longitude). De Mar Marine Service Inc is categorized under Boat Docks (SIC code 4493). Known organization president is Joseph De Mar. You can contact the company by phone at (815) 459-4718.