Marine Technology Reporter Blogs - sweden

A limiting factor to the increase in the use of LNG fueled ships on a larger scale is the lack of LNG bunkering infrastructure worldwide, with exceptions being northern European countries which have been at the forefront on maritime LNG fuel development, such as Norway and Sweden. DNV GL recently launched a Recommended Practice for authorities, LNG bunker suppliers and ship operators, which provides guidance on how LNG bunkering can be done in safely and efficiently. According to DNV GL, LNG-fuelled ships have logged over 130 ship-years of operation in Norwegian waters. In some parts of the world, operators, suppliers and regulators have gained experience in all aspects of LNG-fuelled ship operations in recent years.

MMT is a Swedish marine survey company offering turnkey services, including two remotely operated towed vehicles (ROTV) equipped with various survey equipment for complete geophysical surveys. MMT has now upgraded the systems to be fully equipped with side scan sonars and sub bottom profilers, in addition to multi-beam echo sounders, inertial navigation system and doppler velocity log. This means a complete geophysical survey can be done from this platform in a speed of 6 knots and down to a water depth of 400 meters. The advantage of the ROTV is that it is a powerful tool for accurate line keeping during a survey. The upgrades system enhances the control of the tow-fish and allows both a constant altitude above the seafloor as well as maintaining the planned survey lines.