NOAA Monohansett Scanning
2G Robotics’ Underwater Laser Scanner’s helped the National Oceanic and Atmospheric Administration (NOAA) accurately model the Monohansett shipwreck in high-resolution.
The National Oceanic and Atmospheric Administration (NOAA), with the assistance of Offshore Analysis & Research Solutions (OARS), used 2G Robotics’ underwater laser scanning technology to create 3D models of some of America’s most nationally significant shipwrecks. The goal was to generate scans to provide 3D archaeological records of the site in its current condition and enable a more detailed understanding of the wreck to be attained.
2G Robotics’ newest underwater inspection system, the ULS-500 PRO laser scanner with stills imaging camera and subsea light, was attached to a frame mounted to NOAA’s vessel, the Storm. DGPS was used for navigation data and a POS MV and PHINS INS were used for positioning. To assist further with positioning, the ULS-500 PRO was integrated with the survey and navigation software, EIVA NaviSuite, provided and operated by OARS.
Kevin Tomanka, Senior Hydrographer and Data Processor at OARS, noted: “The ULS-500 PRO interfaces just like any other Multibeam Echosounder in EIVA NaviScan. The software also supports multi-head systems so you can run a multi-beam and a 2G laser simultaneously.”
As the Storm traversed the waters above the wrecks, the ULS-500 PRO dynamically captured data. The ULS-500 PRO generated detailed, to-scale, dimensional records of these sites, helping to accurately document America’s maritime history and heritage.
Stills Imaging Integration
While the ULS-500 PRO captured laser data, 2G Robotics’ OBSERVER Stills Imager and RAY LED captured and seamlessly interlaced still images between laser profiles. The OBSERVER is a scientific stills camera that captures images at the highest quantum efficiency with ultra HD resolution. With the OBSERVER there is no image compression or pixel binning, which is common with other subsea cameras, so there is no reduction in resolution or loss of megapixels. Using the stills captured by the OBSERVER, mosaics of the wrecks were assembled.