Comment

Comment by Rob Bryan on June 10, 2010 at 9:23am

Compressor failure wouldn't do it. There would also need to be a nonreturn valve failure and some sor tof failure causing rapid venting at the surface.

Comment by A.. Parnell on May 2, 2010 at 11:32pm

Thanks guys every dive needs to see your video-good job.

Comment by Dive Diva on April 30, 2010 at 8:42am

When the hose is cut or if the compressor fails; it creates a pressure differential on the body of roughly 120 Pounds per square inch. The average human has about 3000 square inches of surface area. This results in a force of about 37,500 pounds on the body or about 18.75 Tons. Once the water pressure outside his helmet was greater than the air pressure inside, the resulting "pressure gradient force" would try to equalize those pressures.

Comment by Dive Diva on April 28, 2010 at 1:43pm

The dimensions of a diving helmet like the one in the myth is approximately 19"H x 14 1/2"W and with it being somewhat spherical if you calculate the volume to be between the spherical (app. 1596.256 cubic inches or 0.924 cubic feet) and cubical (3994.75 cubic inches or 2.312 cubic feet) volumes to be approximately 2800 cubic inches/ 1.620 cubic feet (spherical volume plus cubical volume divided by 2) and an average person, at 175.5 pounds, occupies approximately 2.695 cubic feet*. So no matter what the divers entire body, as per the myth, could not possibly fit in the helmet anyway! Even if the helmet was cubical with the same dimensions 19 x 14.5 x 14.5 = 3994.75 cubic inches (2.312 cubic feet) the myth is busted with simple math. In order for the diver to have fit in the helmet, of the estimated 1.620 cubic feet, in a worst case scenario he would have to weigh a maximum of approximately 109.650 pounds.

Comment by Dive Diva on April 28, 2010 at 1:39pm

On 21 June, 1914, a hard hat diver named Edward Cossaboom was working on the salvage crew, recovering bodies from the Empress of Ireland, in the St. Lawrence River. He fell off the ship's superstructure in about 80 feet of water. His tender failed to arrest his fall and he came to rest at 140 feet. The rapid increase in water pressure resulted in sufficient pressure differential that he was sucked into his helmet. The divers who recovered his body said it resembled "a jellyfish with a copper mantle and dangling canvas tentacles.

Comment by Justin on April 27, 2010 at 6:56pm

300fsw

Comment by Steve Rupp on April 27, 2010 at 6:33pm

Nice! I wonder what depth they had him at?

Comment by Justin on April 27, 2010 at 6:27pm

For the people who havent seen it!