Re: "Frogman"?

On Mar 20, 1:56 pm, David Phillips <david.phill...@xxxxxxx> wrote:
On 19 Mar 2007 13:20:15 -0700, jeffreysm...@xxxxxxxxx wrote:

[ much snippage, to get to ... ]



Currently the naval has at least 3 types.

1) Navy Divers Soft and Hard suit, including Newtsuits. Work to
inspect and repair underwater objects. Serve on Salvage Ships and
shore detachments. Primarily non combat, though still hazardous
duties. Civilian contractors have replaced some these needs.

It's of course possible, or even likely, that doctine has changed
since I received my discharge, but I do have questions about where you
found these classifications and distinctions. All of my questions are
based upon my recollections and experience from the late 70s and early
80s.


www.navy.com/about/navylife/onduty/navydiver
Types of Divers
and Equipment

Second Class Divers are trained in SCUBA, Surface Supplied (Air/Mixed
Gas) and Closed Circuit Diving Ops
plus
Surface Supplied Air Diving:
Divers tethered to a surface supplied air diving system can achieve
dives up to 190 feet of seawater in air diving and 300 feet of
seawater in mixed gas diving

First Class Divers are trained as above plus Saturation diving
operations

from www.history.navl.mil/faqs/faq100-1.htm

US Navy Saturation Diving
excerpt - Navy developed two types of Deep Diving Systems, the DDS Mk
1 used in trial dives to 1148 feet of seawater is no longer in
service. the DDS Mk 2 Mod 1 supports were included on ASR21 class
ships.

US Navy divers set the record of 1148 fsw in 1975, French subsequently
broke the open sea record in 1977 at 1643 fsw

www.navydiver.org - history
1979 Divers from Navy Experimental Diving Unit completed a 37 day 1800
fsw dive
1981 Divers set record 2250 foot dive at Duke Medical Center Chamber
2001 Divers from NDSU-2 utilize saturation diving systems to salvage
the Monitor
2006 Navy established rating Navy Diver (ND) in engineering/hull
community

Current NECs
NEC 5311 - Satuation Diver
NEC 5341 - Master Diver
NEC 5342 - Diver First Class
NEC 5343 - Diver Second Class
NEC 5345 - SCUBA Diver
NEC 5346 - Master Saturation Diver

E6-E9 authorized 1 Jun 2006
E1-E5 authorized 1 Oct 2006



Navy Divers are classified as

Second Class Diver Depths to 300 feet, scuba, surface supply,
closed circuit suits, to perform submarine lockouts, underwater
maintenace, propeller changes, underwater construction and salvage
ops.

300 ft? Second Class Divers are(were) air divers. 300 ft is a deep
dive on air. I've been to 200 feet on air in a wet recompression
chamber, and was pretty narced (although able to focus enough to
complete my task). At 300 feet, the narcosis could be severe enough
to cause unconsciousness.

USN Standard Air Decompression tables only go to 130 feet.
(www.ndc.noaa.gov/graphics/USNDeco110_130.jpg), fromwww.ndc.noaa.gov/dp_forms.html

NOAA won't allow their divers to exceed 130 feet without written
approval from their safety board (although they don't address surface
supplied diving)



First Class Diver Depths to 1000 feet, as above plus
saturation diving and supervision of chamber operations.

1000 ft?!! Do you have any idea what's required to go to 1000 ft?
You've got to switch your breathing mix to get your partial pressure
of O2 down to safe levels. That's saturation diving, which is a
separate school. It's probably correct to say that all saturation
divers are first class divers, but not all first class divers are
saturation divers.



Master Diver As above and manages diving operations for
Navy and Marine Corps.

Diving Officer Can perform SCUBA and surface supplied
air dives

add ... Deep Sea Diving Officer. Trained in HeO2 diving. Diving
school for the 9313 designator is six months long, and was basically
the same as first class diver, but with less emphasis on underwater
cutting & welding, and more emphasis on salvage training.


.

Relevant Pages

  • Re: 500 psi at the boat and the 130 limit.
    ... Most divers have no idea of their SAC rate, ... Against millions of divers doing millions and millions of dives. ... I'm not aware the one I knew was ever confirmed (or even alleged, outside a certain section of the cave diving community). ...
    (rec.scuba)
  • Re: Vitamins benefit divers health
    ... Vitamin doses can reduce ill-effects of scuba diving on divers' ... work as antioxidants, to divers, the Journal of Physiology reported. ... The vitamins stopped ill-effects of the dive on the cells lining blood ... properly, causing high blood pressure. ...
    (sci.med.nutrition)
  • Vitamins benefit divers health
    ... Vitamin doses can reduce ill-effects of scuba diving on divers' ... work as antioxidants, to divers, the Journal of Physiology reported. ... The vitamins stopped ill-effects of the dive on the cells lining blood ... properly, causing high blood pressure. ...
    (sci.med.nutrition)
  • Re: Damn... I may be turning into a DIR Nazi ;-)
    ... but it doesn't work as well with the long hose. ... I thought the wars over basic kit setup for Tech diving ... tend to be frequent tech nical divers), but more here that are DIRL ...
    (rec.scuba)
  • Re: 500 psi at the boat and the 130 limit.
    ... Most divers have no idea of their SAC rate, ... That would seem to be more and indictment of cave diving. ... Cave diving by its nature has longer dives, ... I use 1.6 deco, 1.4 recreational diving and under 1.2 for overhead. ...
    (rec.scuba)