Free Republic
Browse · Search
News/Activism
Topics · Post Article

To: FreeInWV
No worries. 130 metres ain't all that deep.

Scuba at 400 feet? That was about the maximum dive depth for a World War II sub.

36 posted on 12/05/2006 1:08:18 AM PST by PAR35
[ Post Reply | Private Reply | To 11 | View Replies ]


To: PAR35
Scuba at 400 feet? That was about the maximum dive depth for a World War II sub.

You can't compare the two. A WWII sub was limited by its hull's ability to withstand pressures at depth. The human body is mostly liquid and is essentially non-compressible. To give you an idea, the free diving (no scuba - just hold your breath) world record in the "no limit" category (using a weighted sled to descend and inflation device to ascend) stands at 183 meters. That's on a single held breath. That record is not limited by the body's ability to withstand the pressure, only the person's ability to hold his/her breath for what must seem like an eternity. For scuba at that depth the issue is breathing gas. We've figured that out. The scuba world record is somewhere north of 300 meters. It takes only minutes to descend, but at that depth it takes several hours to ascend, due to the need to do multiple decompression stops.
40 posted on 12/05/2006 10:23:35 AM PST by Bellows
[ Post Reply | Private Reply | To 36 | View Replies ]

Free Republic
Browse · Search
News/Activism
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson