Submerged wreck and bulkhead surveyed with side-looking 8125 data in the Chicago River. A foot of water covered the wreck, yet it was not visible from the surface. The transducer was mounted at a 35-degree angle to acquire side-looking data after a suspicious contact was observed in the outer beams near a surface buoy.
Author: Dave Sinson, Joe DiPalma, Xander Unrein, Ocean Surveys Inc.
Software: HIPS and SIPS
Data Source: Data from United States Army Corps of Engineers condition survey of the Chicago River.