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Date: Tue, 7 Nov 1995 21:59:24 -0800
From: Atikkan@ix*.ne*.co* (EE Atikkan )
Subject: Re: tables
Cc: techdiver@terra.net
You wrote: 

>
>At 04:17 PM 11/7/95 +0000, you wrote:
>>then when did these so called "new" tables come out? april of 1994 is way
>>after 1985 when that survey was done. The tables I published are the same as
>>countless others publish in books, dive log, ect.........
>>*************************************************************************
>>*									*
>>*	Kurt Schmidt <KurtAggie@ta*.ed*>				*
>>*	HTTP://http.tamu.edu:8000/~mdb3774/scuba.html			*
>>*	Texas, Arknasas, Missouri, Tennessee, Louisiana Dive Lists	*
>>*	Links to Thousands of SCUBA Pages World Wide			*
>>*									*
>>*	Texas Diver Zine						*
>>*	http://http.tamu.edu:8000/~mdb3774/texasdiver/			*
>>*									*
>>*************************************************************************
>>
>>
>
>Interesting that you also use the word "published" and list a copyright
>date.  Obviously no mention is made on your web page of permisson to publish
>obtained from the JAG Office of the US Navy or the Government Printing
>office.  I am sure that you won't mind my forwarding a file capture from 
>your web page and the postings here to the Government Printing Office and 
>the JAG office of the Navy.
>
>
>The "new" tables were finalized a year or so ago, but have not
>been released to the fleet (last I heard).  Based on the maximum likelihood
>statistical method of Weathersby.  
>
>Would really be nice if you would do a little research before jumping in
>on techdiver making announcements about illegal publishing of US Government
>copyrighted material that no one on techdiver is interested in (most of 
>us can afford the $7 for a set of Nu Way Tables if we just have to have
>a copy of these tables.  Or else can find a xerox machine at the local
>library and copy them out of the back of any one of a number of publications
>that have permission to pubish these tables.)
>
>John
>
>
>--
>Send mail for the `techdiver' mailing list to `techdiver@terra.net'.
>Send subscription/archive requests to `techdiver-request@terra.net'.
>
>

Despite the current negative press that the USN tables R getting, they were THE 
tables used by the sport diving community for many years.  Of course, that
despite 
the fact they were never intended for the use they were put to.  NEDU Report
83-13 points
out some errors of the USN tables, where some of the shallower exposures were
shifted
resulting in an underestimate of the 'rep group' for that exposure by one letter
group.  They also pointed out some typos for the SITs.  

Bove and Davis do not state that the tables are  unsafe for those exposure.  
They project that they could be.  The manner in which the 
Navy used those tables produced a hit rate of ca. 0.04%.

Modifications of them (not in substance, format only) abound, the Nu-Way tables
being
one of them.

Current and previous NAUI tables R truncated forms of the USN tables, with:
1. Shorter NDL's
2. A total 'clearance' time of 24 h
3. Bottom time calculated from surface to surface with safety stops being 'nul
time'.

The PADI RDP is a completely new 'dive table' system, where more 'Rep groups'
are used,
but the controlling compartment is a 60 min compartment instead of the 120 of
the USN
standard exposure tables.  240 for the USN exceptional exposure tables.

Statistics do not show that the USN dive tables as used by the sport diving
community
resulted in an undue # of DCI cases.  The # of cases reported to DAN have
remained 
in the 400-500/annum range even with the transition of tables.

I would be suprised that there is a true 'copyright' on US Government
documents, 
especially since they are being made public without deriving any income for the
publisher/circulator.  

In some circles the photocopying of copyrighted material is frowned upon.

So all in all John, your outburst, other than being relatively baseless, was of
an uncalled fervor.  What purpose did it serve?

You tell all that the technical diving community will not use them, so their
availability
should be of no consequence.  Drugs are available, which is of no consequence
to those
who do not wish to partake in them.

If others want to use them, I don't think it is anybody's business.

Esat Atikkan

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