Questions and Answers for Carter Lift Bag Pillow Bag., 4000 LB:
I need to move whats called an ecology block. Its about 1600-2000 lbs of concrete, in 8-20 ft of water. I believe this would make it a towable item we could then let the air out of the bag once its in position. Would this work?
Bill (Certified Scuba Instructor at Scuba.com)
You might want to contact Carter Lift Bags directly as to the best one for your purpose. http://www.carterbag.com/home.html
Carter Lift Bag - Pillow Bag
Enclosed Pillow Bags are totally enclosed, with over-pressure valves to vent expanding air as they ascend. The advantage of Pillow Bags over the Open Bottom Bags is that they can attain their maximum lift in much less water. For this reason, they are excellent for raising sunken boats, and for towing jobs. Like the Boulder Bags and the Ocean Salvage Tubes, all Pillow Bags come with brass quick-disconnect fittings attached to a short filler hose (connects to 1/4' pipe thread).
Please see the table below for sizes and information.