"Underwater logging is nothing new, but Triton Logging adds a whole new dimension to the term. Many of us in the woodworking community are familiar with the fact that trees that float in water for long periods of time become water-logged and sink to the bottom, and some people have found ways to recover these trees, dry them out and turn them into lumber.
Now I want you to think about this ... according to some sources there are over 45,000 large and 800,000 small dams world-wide. In order to create these dams it is estimated that over 2 million high quality trees have been flooded with no possible way of harvesting this otherwise lost resource. Enter Triton Logging and their solution."
To read the full article , click "read more" below.
Harvesting trees from the bottom of lakes takes a certain expertise, not to mention some specialized equipment. If all you had to do was pick up logs, this would be somewhat simple, but when the trees are still standing and you have to actually cut them down, then raise them there is a whole new set of capabilities required. The answer to this complex problem was to design an underwater vehicle that could not only cut down trees but also send or bring them to the surface. For this task Triton Logging invented what they call the "The Sawfish" an ROV (remote operated vehicle) that is controlled by what is essentially an intelligent umbilical cord or tether, probably not unlike one of the game controllers for video games..
The Sawfish, which is the heart of the solution, receives power and air from a barge, floating nearby. The Sawfish also has attached eight video cameras so that the operator can see exactly what is going on at all times, and from different angles. Just prior to cutting a tree, and air bag is attached to the trunk. When the tree is cut, the air bag is inflated and the tree is pulled to the surface where they are then collected and towed to a sort and recovery area. It would seem that a waterlogged tree would have an enormous weight, and it does - - out of the water - - but while in the water, the water in the log is displaced by the water around the log so the only real weight is that of the actual wood. It is this phenomenon that allows the air bag to be able to lift the tree to the surface.
One of the questions I wondered about was water and it's association with wood rot. Why doesn't the wood just rot. Well the quick answer is, it does, but very, very slowly because wood needs two things in order to rot, bacteria and oxygen. Under the cold waterw there is not a lot of either of these components, so underwater wood rot, especially in temperate climates takes a long time, often centuries. The other element that can destroy wood, or in some case enhance it depending on the degree of invasion are various worms and insects that can bore into the wood, again these elements are quite lacking which means logs can lie in the water for decades and more and still be as valuable as they were when they were alive.
Great job to Chris Godsall, President and CEO of Triton Logging for enabling an environmentally , conservation friendly way of using our exiting resources. As all of you know, we at Woodworkweb are very conservation and environmentally friendly conscious, that is why we have provided the WARP information and processes you can find on the link at the top of this page.
Copyright - Colin Knecht