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On 3/24/2011 11:45:37 AM, Frank Reed (frankreed@historicalatlas.com) wrote:

> My guess would be that the 'milestone' referred to here is computer
> generation and typesetting of a newer edition of H.O. 229.

Possibly, though the way it's written I took it to mean that this was the
first time that the (former?) publication called "Sight Reduction Tables for
Marine Navigation" had been released as H.O. 249.

> I think the actual first date of publication of the tables was around
> 1970, but I don't know. Certainly they were widely known in the
> mid-1970s.

I was thinking that 229 went back even further (to maybe shortly after
WWII?), though it's been long enough since I've seen a reference to the
initial publication date that I'm not really sure.

--
GregR



On 3/24/2011 11:45:37 AM, Frank Reed (frankreed@historicalatlas.com) wrote:

> Greg Re., you wrote:
> "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" "
>
> That list was compiled in part by Don Treworgy, who passed away in 2009,
> so I cannot ask him. My guess would be that the 'milestone' referred to
> here is computer generation and typesetting of a newer edition of H.O.
> 229.
> I think the actual first date of publication of the tables was around
> 1970,
> but I don't know. Certainly they were widely known in the mid-1970s.
>
> It does rather make sense that 229 would have been published BEFORE 249,
> right? Perhaps they reserved the number for the project earlier, and it
> took much longer than expected to bring it to market.
>
> -FER
>
>
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