The M563 is a high-sensitivity broadband marine transducer for shallow-water and coastal surveying that delivers excellent broadband performance throughout low-frequency (25-45 kHz) and high-frequency (3 options) bands. It is capable of crisp waveforms at discrete frequencies, as well as broadband Chirp or coded waveforms.

The assembly can be mounted on a towed body, directly to a wood, steel, or fiberglass hull, or as an in-hull in a fiberglass hull for precise echo sounding. The seamless SEALCAST urethane housing provides long underwater operational life.