
In British Columbia, Triton Logging has uncovered an effective, profitable, and eco-friendly way to meet the continued demand for lumber: underwater logging. There are some 300 million sunken trees worldwide – with an estimated value of $50 billion – that have been completely flooded by hydroelectric dams. BC’s own Ootsa Lake was formed 50 years ago when a hydro dam was built, drowning millions of trees when the valley was flooded. In the cold, dark, oxygen-poor water, the tree wood has been preserved, and won’t decay for thousands of years.
The key to Triton’s efforts is the Sawfish™, an underwater logging machine invented by the company. Operated by remote control, the Sawfish clamps onto trees, to which it attaches inflatable air bags, then cuts the trees with an electric chain saw. The air bags float the logs to the water’s surface, where they are loaded onto a barge.
There are several environmental advantages to the Sawfish method. It serves as an alternative to conventional above ground logging, which produces 25 percent of the world’s carbon dioxide emissions and disturbs natural habitats. When submerged trees are cut, the lake floor is not disturbed and no silt (which can threaten the surrounding ecosystems) is created, leaving habitats of fish and other marine species undisturbed. Also, the Sawfish does not pollute the water — it runs on an electric motor and uses biodegradable and vegetable oil-based hydraulic fluids.


Potter fans rejoice! The seventh and final book in J.K. Rowling’s series, Harry Potter and the Deathly Hallows, will release in just two days — on Saturday, July 21.

