NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: H.O. 229/249: publication dates
From: Lu Abel
Date: 2011 Mar 24, 12:38 -0700
From: Greg R. <gregr_ingest@yahoo.com>
To: NavList <NavList@fer3.com>
Sent: Thu, March 24, 2011 9:56:47 AM
Subject: [NavList] Re: H.O. 229/249: publication dates
According to the Mystic Seaport website (Milestones in the History of
Navigation):
"1981 Sight Reduction Tables for Marine Navigation is published, H.O. 229,
as six volumes calculated and typeset by computer"
...though I could have sworn that 229 pre-dated 249 (?).
http://www.mysticseaport.org/index.cfm?fuseaction=home.viewpage&page_id=E37B012C-B0D0-D05E-1A1C5EF9D0FEE2AE
--
GregR
On 3/24/2011 8:33:45 AM, Frank Reed (frankreed@historicalatlas.com) wrote:
> When were these first published? Thanks.
> -FER
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From: Lu Abel
Date: 2011 Mar 24, 12:38 -0700
I remember that the preface to my copy of 229 said that the tables were calculated using an IBM 1401 computer. (Sorry, I can't lay my hands on my book, it's probably buried in some unopened box of books from my last move).
The preface said that these were the first set of computer-generated sight reduction tables (at least in the modern sense of "computer," the pre-WW II usage of "computer" was someone (typically female) who computed something using a mechanical calculator, so I guess those older sight reduction tables were "computer"-generated, too).
The 1401 was introduced in late 1959.
My guess would therefore be that 229 appeared in the mid-60s.
Lu
The preface said that these were the first set of computer-generated sight reduction tables (at least in the modern sense of "computer," the pre-WW II usage of "computer" was someone (typically female) who computed something using a mechanical calculator, so I guess those older sight reduction tables were "computer"-generated, too).
The 1401 was introduced in late 1959.
My guess would therefore be that 229 appeared in the mid-60s.
Lu
From: Greg R. <gregr_ingest@yahoo.com>
To: NavList <NavList@fer3.com>
Sent: Thu, March 24, 2011 9:56:47 AM
Subject: [NavList] Re: H.O. 229/249: publication dates
According to the Mystic Seaport website (Milestones in the History of
Navigation):
"1981 Sight Reduction Tables for Marine Navigation is published, H.O. 229,
as six volumes calculated and typeset by computer"
...though I could have sworn that 229 pre-dated 249 (?).
http://www.mysticseaport.org/index.cfm?fuseaction=home.viewpage&page_id=E37B012C-B0D0-D05E-1A1C5EF9D0FEE2AE
--
GregR
On 3/24/2011 8:33:45 AM, Frank Reed (frankreed@historicalatlas.com) wrote:
> When were these first published? Thanks.
> -FER
> ----------------------------------------------------------------
> NavList message boards and member settings: www.fer3.com/NavList
> Members may optionally receive posts by email.
> To cancel email delivery, send a message to NoMail[at]fer3.com
> ----------------------------------------------------------------
