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	Sonar Systems Four variable systems designed to fit many applications
	Typical survey configurations for deep water surveys consist of a tow vessel coupled to a two part tow sonar system via thearmored coaxial or fiberoptic cable and tracking vessel whose function is to acoustically position the sonar fish and continually update the tow vessel of the fish position through a two- way radio telemetry link. The two part tow system consists of the 1600 pound depressor weight and a neutral towfish.
	The depressor weight decouples the sonar sled from the ship heave and creates a very stable platform which is essential for the acquisition of high resolution sonar imagery. Running the sonar system close to the seafloor removes the problems associated with variations in the water column. Towfish depth is monitored with a precision pressure sensor which can be combined with towfish altitude (detected from sidescan data) to yield highly accurate bathymetric profiles along track. Swath interferometry yields up to 38 precise soundings across track in water depths to 6000m.
		The AMS-150 is a light weight, medium depth seafloor mapping system capable of generating co-registered imagery and bathymetery across a swath of up to 1000 meters (3280 feet). The AMS-150 may be operated off a small boat and deployed and recovered by hand. This allows state of the art sidescan sonar/swath bathymetery surveys to be conducted on smaller, remote projects. The AMS-150 produces cost-effective seafloor bathymetry maps at 1 meter contour intervals. See a few data examples here
		The AMS 120 is a deep seafloor mapping system capable of generating co-registered imagery and bathymetry across a swath of up to 1000 meters (3300 feet). The AMS-120 is a general purpose system with an emphasis on high resolution imagery. The bathymetric mapping capability allows cost-effective seafloor bathymetry maps to be made at 1 meter contour intervals. The AMS-120 has a long track record of successful surveys. See a few data examples here
		The AMS 60 is a deep seafloor mapping system capable of generating co-registered imagery and bathymetry across a swath of up to 2500 meters (8000 feet). The AMS 60 is an ideal general purpose system, allowing both wide swath mapping and high-resolution target imaging. The swath bathymetric mapping capability allows cost-effective seafloor bathymetry maps to be made at 1-2 meter contour intervals. See a few data examples here
		The SM 30 (formerly SeaMARC 1A) is a deep seafloor mapping system capable of generating seafloor imagery across a swath of up to 6000 meters (3.25 nautical miles). The SM 30 is an ideal large area survey or search tool, allowing both wide swath mapping and high resolution target imaging. The SM 30 has been used successfully on a wide range of missions from regional geological mapping to small target and shipwreck searches. See a few data examples here

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