Low Frequency Towed Acoustic Source

The Naval Research Laboratory has awarded a firm-fixed-price, sole-source contract (N0017325P2470) to GeoSpectrum Technologies, Inc. for a low-frequency towed acoustic source system. This acquisition, conducted under FAR 13.5 and 41 U.S.C. 1901, is based on the unique technical capability of the contractor to provide a system fully interchangeable with the existing C-BASS M72-30 dual source tow body system. This interoperability is essential for the laboratory to conduct low-frequency active acoustic at-sea measurements using redundant or tandem operations. Market research involving five different firms confirmed that GeoSpectrum is the only responsible source capable of meeting the precise technical requirements without incurring unacceptable costs or schedule delays. The system consists of two C-BASS M72-30 acoustic projectors capable of producing sound pressure levels of 190 dB re 1 uPa in the 30-700 Hz frequency band, a tow body housing rated for depths of 300 meters, and a 350-meter electromechanical tow cable with a breaking strength of 23,000 kg. The equipment must be deployable from a surface vessel at speeds of three to five knots. Delivery is estimated at approximately 40 weeks after award, with performance and acceptance taking place in Washington, DC. Because the C-BASS technology is patented and proprietary, no other vendor can provide the necessary signal protocols, pinouts, and physical interfaces required for integration with current Navy equipment.