Underwater Equipment Kongsberg Mesotech Kongsberg Mesotech has released the release of the new 1171 Series Multi-Frequency High-Resolution Fan/Cone Sonar Head, specifically designed to produce the highest resolution sonar images possible. Designed for imaging and profiling, the scanning sonar head is intended for applications where data and image clarity supersede any other requirement, including, underwater construction support, site clearance and bridge and pier inspection. The sonar head supports multifrequency operation on both the fan and cone transducers.
The operating frequency of the cone transducer can be selected by choosing one of four different ‘pre-set’ frequencies (675/900/1200/1300 kHz). The operating frequency of the fan transducer can be selected by choosing one of three different ‘pre-set’ frequencies (900/1000/1100 kHz) or by choosing ‘tunable’ mode where the frequency can be changed in 5 kHz increments. Increasing the frequency will result in narrower beams and sharper data. “This new sonar head operates at high frequency to provide ultra-fine resolution data, delivering a superb image quality typical of Mesotech scanning sonars,” said Bogdan Constantinescu, Product Group Manager, Kongsberg Mesotech. “Not only is there increased resolution but the multifrequency capability opens up new opportunities for exploring the texture and other frequencydependent characteristics of smaller acoustic targets in the underwater environment.”
56 Sonar Image
UT3 September 2013
Kongsberg Mesotech has also released a new version of the MS 1000 processing software (Version 5.23), which supports all multi-frequency sonar heads with selectable and tuneable frequencies, and is required to access the features of the new multifrequency highresolution sonar head.
Titan
BIRNS has launched its latest marine illumination system –a hydrargyrum medium-arc iodide (HMI) lamp system called Titan. This robust 4000W lamp delivers, 380,000 lumens of intensely bright light.
The Titan HMI light system from BIRNS
The powerful lamp features a high Color Rendering Index (CRI) of Ra > 90 and 6,000K color temperature. It provides massive light output, mixing mercury vapor with metal halides in a quartz-glass envelope, and energising the resulting mixture with two tungsten electrodes of medium arc separation. The housing on this innovative new light system is especially rugged— crafted from tempered cast aluminium. The lens is powerfully constructed to withstand intensely rigorous salvage, security and offshore applications, made from tempered borosilicate 19mm thick glass. The BIRNS Titan also comes with a sturdy stainless steel mounting yoke, so the light can be adjusted and set in a wide range of positions. It includes an exclusive power system which integrates BIRNS high performance metal shell subsea connectors, and a robust braided shielded cable. The light’s output is controlled with an advanced dimmable electronic ballast.