About Revisions Old Navy Underwater Laser Testing Site NH More Info Max Depth: 21-25ft/6-8m Entry Type: Boat Bottom Composition: Clay/Muck Aquatic Life: Might See Something Spring: Under 50°F/10°C Summer: 50-55°F/10-13°C Winter: Under 50°F/10°C 8/17/2012 2:10 PM

From http://www.divewinnipesaukee.com/divesites.html Just south of "Empty Pockets" is the location of the Navy’s old underwater laser testing site that dates back to the 1950’s. SCRIPTS conducted testing to study laser transmission through water. A railcar that ran on a track, like a coal-mining railcar, was used to measure how fast the laser beams were traveling through water. The track is in about 25 feet of water with staging in deeper water.