Page 59: of Marine Technology Magazine (June 2011)

www.seadiscovery.com Marine Technology Reporter 59

DMS-500RP Range from Teledyne TSS

A new addition to the Teledyne TSS range of DMS motion sensors was launched at the US Hydro 2011. The

DMS-500 range is being developed specifically to meet the needs of users who require a top-quality motion sen- sor with Ethernet connectivity, but do not require the sub- sea-rated housings that typify Teledyne TSS products. The result will be a complete range of conservatively-priced sensors that incorporate a number of advanced and inno- vative features for applications such as Dynamic

Positioning (DP), wave height monitoring and structural stress monitoring. The versatile design means that the range will be available in various accuracies to make it suitable for a wide range of bespoke applications.

The first phase of the product's launch introduces the

Roll Pitch range of sensors - DMS-525RP, DMS-535RP and DMS-550RP. The solid state circuitry of the DMS- 500 is contained within a surface-use housing that is water resistant to International Standard IEC 60945 Class B for marine applications (IP65). www.teledyne-tss.com

Renewables Mammal Detection System

Tritech expands its sonar range with a key renewables device, launching its Gemini SeaTec Mammal Detection

System. Gemini SeaTec is a mammal detection system which provides a tool in the detection of marine life around subsea turbines. Tritech’s subsea sonars have been deployed on marine current structures since 2008 when the company made its first step into the offshore renew- ables sector. Tritech has now developed its real-time multi- beam imaging sonar technology for this market.

The Gemini SeaTec system uses Tritech’s Gemini 720id multibeam sonar and its bespoke image detection soft- ware. This software is designed to provide an early warn- ing of the presence of sea mammals in the vicinity of marine current turbine structures. The Gemini SeaTec provides real-time monitoring of marine wildlife, allowing the operator to take corrective action as required. The logged data can be stored for analysis and used for envi- ronmental assessment as part of the current turbine devel- opment process.

The Gemini SeaTech is currently installed on SeaGen.

New Airborne Lidar Bathymetry System

Fugro announced a new cycle of Airborne Lidar Bathymetry (ALB) system development and have commenced flights trials of the Fugro LADS Mk 3 ALB system. The new system has successfully acquired accurate depth and hyperspectral data over test areas in St Vincent and Spencer Gulfs near Adelaide, South Australia. The new genera- tion Fugro LADS Mk 3 system has been developed from the Fugro LADS Mk II and RAN LADS 2 technologies, and is now smaller, lighter and more efficient to operate. The Fugro LADS Mk 3 is designed for operation in a wide range of aircraft and is suitable for small turbo props or rotary wing aircraft alike. The new system continues to offer a high laser power, large aperture receiver and automatic gain controls, enabling superior system performance to col- lect bathymetry to IHO Order 1a and 1b survey requirements. The laser rate of the Fugro LADS Mk 3 system has been increased to 1.5 kHz and its maximum depth performance extended to 80m, subject to environmental condi- tions. The faster laser rate provides wider and more efficient swath widths up to 430m. The Fugro LADS Mk 3 sys- tem can be used for a wide range of projects, including nautical charting, pre-seismic surveys, coastal engineering projects such as port development, and environmental surveys for habitat mapping and coastal zone management (CZM). The Fugro LADS Mk 3 system can also be fitted with a hyperspectral sensor (HSI) for simultaneous

ALB/HSI data acquisition that enables further habitat mapping and CZM applications to be undertaken.

The system is designed to enable shallow water and coastal zones to be surveyed faster and more cost effectively by enabling high quality data to be economically collected across a wide range of environmental conditions. The sys- tem architecture has also been designed to facilitate continuous technology development and there are plans in place to further increase laser rates and swath widths. The Fugro LADS Mk 3 system build was completed in Adelaide at the end of March with ground and airborne trials occurring during April. It is planned that the Fugro LADS Mk 3 system would then be available from May 2011 for shallow water hydrographic surveys that Fugro conduct world- wide. www.fugro.com