Page 54: of Marine Technology Magazine (March 2018)

Oceanographic Instrumentation: Measurement, Process & Analysis

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Courtesy Sonardyne International

Sonardyne subsea sensors are used in conjunction with surface communications buoys to provide essential tsunami warnings to ‘at risk’ areas. market high-speed underwater modems. energy contained within a single lithium high-grade, high-reliability, commer-

Bluecomm – BlueComm is a through- D-sized cell over distances greater than cially-available ring laser gyros (RLG) water wireless optical communica- 150 meters. and accelerometers. The sensors used tion system that has been developed The applications for Bluecomm are are the standard for commercial aviation to transmit subsea data, stream video extensive: used in conjunction with So- and have a proven track record of more and perform tetherless vehicle control nardyne acoustics, low-bandwidth data than 15 years and a mean time between at very high speeds. The BlueComm can be transmitted acoustically (for failures (MTBF) of more than 400,000 modem family is currently made up of example by switching on the optics re- hours.

three variants: BlueComm 100 is opti- motely) and high-bandwidth data such Lodestar AHRS supports serial, Ether- mized for shallow-water ‘high ambient as video or sonar imaging data

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