A New Target Last week The Shipwreck Project surveyed and confirmed another sonar target. Before diving and upholding a long-held Project ritual, the lump was christened “The Block Of Cheese” on account of what it looked like on the sonar. Here’s a screen grab of what we were looking at: The Scan The target was quickly confirmed Read more about Tidal Streams and Photogrammetry[…]
Error Correction Time Its time to confess a small but significant mistake when annotating the 3D model of the UB 116:- It turns out I had labelled the bowplanes incorrectly, for a check of the builders plan shows their shape as matching hydroplanes. And as any good submarine nerd knows, bowplanes are at the pointy Read more about Updated – the UB 116 & Builders Plans[…]
How much? Photogrammetry produces a lot of data. Here’s a walk-through of the kind of volume needed to create the High Seas Fleet pinnace found last month in Scapa Flow:- Volume of data by event From beginning to end we have:- Dive – 598 RAW files = 15.32Gb Initial processing – 598 derived JPEG images Read more about Photogrammetry – Managing the Data[…]
Things Change Shipwrecks are not static, unchanging places. As age, tide and corrosion take their toll things settle into the seabed. Prior to photography, and more recently photogrammetry, the changes would go unrecorded. But as those of us who dive the SMS Karlsruhe regularly, it is no longer possible to recreate this image as shot Read more about Changing Wrecks – Which Version?[…]