Archive for 02/23/2012

Hydro International –

L-3 Klein Associates has introduced a lightweight, rapidly deployable side scan sonar (SSS) for search and recovery (SAR) applications.

The HydroScan implements advanced technologies not previously available in side scan sonars, according to the manufacturer, resulting in a compact profile delivering much higher quality imaging and range performance than other small SAR SSS systems.

From nose to tail, L-3 Klein’s HydroScan was specifically designed to anticipate the needs of today’s SAR and related applications.

The system utilises proprietary dual-frequency (455 and 900kHz) wideband FM Chirp sonar to provide high-resolution imaging, outstanding contrast ratios, and under certain conditions, as much as double the range of competitive lightweight systems in disaster, emergency and first responder surveys.

The HydroScan is rated to a full 100-metre depth and is designed with rugged components that are built to last.

In addition, the new design features an easy-to-access tow cable connection and a well-placed handle for effortless transport.

John Cotumaccio, general manager of L-3 Klein, said that during L-3 Klein’s performance and reliability testing, using typical tow speeds of 4-6 knots, the HydroScan system consistently captured very high-resolution imagery over 80 metres per side using 900kHz, and also over 175 metres at 455kHz.

 

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The Jakarta Post – 

Australian researchers Thursday revealed they had filmed a pod of extremely rare Shepherd’s beaked whales for the first time ever.

The Australian Antarctic Division team was tracking blue whales off the coast of Victoria state last month when they spotted the reclusive mammals, which are so rarely seen that no population estimates of the species exist.

Voyage leader Michael Double said the black and cream-coloured mammals with prominent dolphin-like beaks had been spotted in the wild only a handful of times through history.

According to the Australian environment department, there have only been two previous confirmed sightings — a lone individual in New Zealand and a group of three in Western Australia

They have never been filmed live before.

“These animals are practically entirely known from stranded dead whales, and there haven’t been many of them,” Double told AFP, calling the footage “unique”.

“They are an offshore animal, occupying deep water, and when they surface it is only for a very short period of time.”

Full story…