Side-scan sonar is a category of sonar system that is used to efficiently create an image of large areas of the sea floor.
Side-scan sonar image of submerged bridge at the bottom of Lake Murray in South Carolina
side-scan image of the freighter Choctaw
Maritime archaeology is a discipline within archaeology as a whole that specifically studies human interaction with the sea, lakes and rivers through the study of associated physical remains, be they vessels, shore-side facilities, port-related structures, cargoes, human remains and submerged landscapes. A specialty within maritime archaeology is nautical archaeology, which studies ship construction and use.
A maritime archaeologist with the Lighthouse Archaeological Maritime Program in St. Augustine, Florida, recording the ship's bell discovered on the 18th century "Storm Wreck."
Submerged bridge under Lake Murray, South Carolina in 160 ft (49 m) of fresh water seen on side-scan sonar imagery using a Humminbird 981c Side Imaging system
The final phases of the salvage of Mary Rose on October 11, 1982.
The bow of Vasa, a Swedish warship that foundered and sank on its maiden voyage in 1628. It was salvaged in 1961 and is now on permanent display at the Vasa Museum in Stockholm.
