Seiko & Citizen Watch Forum Message Archive
Static pressure vs Dynamic pressure>>>
is precisely what made me change my everyday beater from my old 6309-7040 to a new 007K. Before recently moving to Tennessee, I was a Firefighter/Rescue Technician with Columbia SC's Fire Department for 5 years on the Heavy Rescue. One of our disciplines was Swiftwater Rescue in the Saluda River (Class V rapids). Tho my old banger never gave me any problems during my earlier Army years, the most I ever put it through then (submersion-wise) was a few river-crossings and helo-casts. One day while training with Rescue 1 in the Saluda R. my partner mentioned the big ole difference between static depth and the dynamics of swiftwater (I have always benefited from having partners smarter than me). I never really had any problems using the old Seiko, but the peace of mind I get now from having the added protection of a 200m doesn't hurt a bit. Now when I head out on my Carlson board on the Little River in the Great Smoky Mountains Nat'l Park, I feel better knowing that my new beater is that much more capable of handling the rigors of swiftwater.
Just my 2 cents worth.
Message Thread
- 150m vs 200m on the divers...what caused the increase? - brian - 2003-03-06 13:58:00
- my gist.... - shawn - 2003-03-06 14:01:00
- what 200M means in practical terms >>>> - ponycarp51 - 2003-03-06 14:08:00
- Pony, those are the standards I'm talking about... - shawn - 2003-03-06 14:15:00
- FWIW found this site looks like 1996 is current std. >>>>> - pony - 2003-03-06 16:06:00
- For what it's worth, I read recently that anything deeper than 140m without... - Rob - 2003-03-06 14:31:00
- Isn't it the case...(more) - Alex - 2003-03-06 14:46:00
- That's possible. nt - Rob - 2003-03-06 15:03:00
- totally correct- my 6309 took far more pressure at the surface during... - shawn - 2003-03-06 15:09:00
- You are correct [nt] - Will V. - 2003-03-06 17:58:00
- Once saw an analysis of the effects of dynamic pressure .... - JacobC - 2003-03-06 18:25:00
- That's kinda the point (more) - Alex - 2003-03-06 22:05:00
- The same thing appeared on Ultimate Dive Watch form - John S. - 2003-03-07 04:36:00
- That was me! I'll dig up my calculations or the reference... - B Hannigan - 2003-03-07 06:49:00
- Here 'tis.... - B Hannigan - 2003-03-07 07:09:00
- Great information. Thanks for sharing. nt - Rob - 2003-03-07 10:17:00
- This should lay all fears regarding dynamic pressure to rest, once and for all !! - JacobC - 2003-03-07 18:51:00
- calculations... fwiw - mike p - 2003-07-10 18:30:00
- That's Why We Need a new WR Standard - Kixo - 2003-03-06 23:07:00
- Yeah but... - Alex - 2003-03-07 00:22:00
- Static pressure vs Dynamic pressure>>> - jeff - 2004-11-16 08:42:00