The device is similar to a scramble net made of cloth webbing. It can be suspended over a rail, but it has stiffener batts which make it easier to climb. It can take the form of a hammock or stretcher for the rescue of weakened or injured people when the "top" and "bottom" of the net are lowered to the water level so they can simply roll into it. Different sizes are available, both for pleasure craft as well as for maritime search and rescue applications.
^"Tugboat Capsizes Near Liberty Island; 3 People Rescued". CBS News. 2012-04-06. Retrieved 2012-04-09. "NY Waterway says Gouda and his crew used a device known as a “Jason’s Cradle” to effect the rescue of the three. “We used our classic procedures today,” Gouda said. “I lowered the cradles as the passengers climbed up. The same procedure we used during Flight 1549.”"mirror