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LCMM Tests New Technology for Viewing Shipwrecks

FOR IMMEDIATE RELEASE

Contact: Adam Kane, Co-Director, Lake Champlain Maritime Museum
(802) 475-2022, ext 116
adamk@lcmm.org

Lake Champlain Maritime Museum Tests New Technology for Viewing Shipwrecks

BlueView Scanning Sonar Deploying the BlueView sonar
The BlueView mechanical Scanning Sonar is deployed from LCMM's research vessel. LCMM Collection.
Click the images for a higher-resolution image.

 

Lake Champlain Maritime Museum’s Maritime Research Institute is exploring an exciting new way to study historic shipwrecks and to share them with the public. This week, Vermont Public Television will air an on-water tour and interview with Adam Kane, LCMM’s Co-Director on the show “Out & About.” Tune in on Monday January 28 at 9pm; Tuesday January 29 at 7pm or Sunday Feb. 3 at 2pm to find out what the excitement is about!

Join the Maritime Museum’s archaeological dive team as they visit a Lake Champlain shipwreck to test new mechanical scanning sonar technology supplied by Teledyne BlueView of Seattle, Washington. The operation took place during the summer of 2012, thanks to a grant from the National Center for Preservation Training and Technology of the National Park Service, and the VPT crew followed up with a visit to the Museum’s Maritime Research Institute earlier this month.

 The Teledyne BlueView BV 5000-2250 is a tripod-mounted device that takes millions of individual sonar readings and displays the results as a three-dimensional (3D) point cloud. Lake Champlain Maritime Museum used this technology to make a detailed examination of the Sloop Island Canal Boat which sank in Charlotte, Vermont during the first quarter of the twentieth century. 

Composite 3D image of shipwreck
All 41 scan locations of the Sloop Island Canal Boat wreck
were compiled into this single composite image, which when
viewed at full resolution represents 35 million points of data.
LCMM Collection.
Click for higher-resolution image.

Using equipment supplied by Teledyne BlueView, LCMM archaeologists deployed a BV5000-2250 3D Mechanical Scanning Sonar to more than forty locations around, on, and within, the wreck site.  At each of these positions the sonar was able to capture accurate 3D images of the shipwreck, which were then assembled into a detailed 3D model of the entire wreck.  This composite image, consisting of 35 million data points, allows the remains of the Sloop Island Canal Boat to be examined in a completely innovative way. 

Detailed archaeological drawings of the shipwreck site were originally created by LCMM archaeologists after more than 300 dives in 2002 and 2003, employing traditional manual documentation techniques. In contrast, data gathering with the new technology in 2012 took only three days. This new technology offers the ability to efficiently record submerged cultural resources in great detail in only a fraction of the time it would take for archaeologists to document them using traditional recording techniques of measuring and drawing. 

Maritime Museum archaeologists will continue post-processing the newly captured data and making comparisons with their original findings this winter. The Museum plans to exhibit images captured by this technology in the Nautical Archaeology Center during the 2013 season. The Museum will also produce a manual outlining best practices for the use of this technology by other archaeologists in the spring of 2013.

For more information, contact Adam Kane, LCMM Co-Executive Director at (802) 475-2022.

 

 

 

Sonar Scan of the bow of shipwrecked Sloop Island Canal Boat
Each of these images represents a single sonar scan of the Sloop Island Canal Boat. The sonar data point cloud is represented as color gradations. Click for higher-resolution image.

 

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