[Public-List] Charts and depth sounding

[Gordon Laco]

…and of course 2201 and the other strip charts have been steady updated since ’68 with new issues, and Notices to Mariners.   

When we used to do Albacore camping/sailing trips here in the 1970’s, some charts still named the 1821 and 1880 Bayfield and Bolton surveys… that didn’t mean the data on them was from then, just that the work of those original surveys was incorporated.  

Today’s 2201 incorporates the 1968 survey, but nobody has to use charts dating from then today.


Gordon Laco
426 Surprise





> On Feb 19, 2022, at 10:44 AM, Gordon Laco <mainstay at csolve.net> wrote:
> 
> 2201 is just the inland route strip chart… the one for our end of Georgian Bay is 2241 and was issued as a brand new chart reflecting the new survey not long ago.  2241 replaced the older chart.
> 
> 
> Gordon Laco
> 426 Surprise
> 
> 
> 
> 
>> On Feb 19, 2022, at 10:41 AM, R Kirk <isobar at verizon.net <mailto:isobar at verizon.net>> wrote:
>> 
>> Gord...
>> 
>> Easy enough to check. Just look at a chart. For instance, I notice, that your hometown Chart CHS2201, the latest Georgian Bay edition of 2020 says, "Sources: Compiled by the Canadian Hydrographic Service from surveys to 1968." New surveys don't look too constant there. 
>> 
>> Hope you and the tarp weren't blown away...  Bob
>> 
>> 
>> -----Original Message-----
>> From: Gordon Laco via Public-List <public-list at lists.alberg30.org <mailto:public-list at lists.alberg30.org>>
>> To: Alberg 30 Public List -- open to all <public-list at lists.alberg30.org <mailto:public-list at lists.alberg30.org>>
>> Cc: Gordon Laco <mainstay at csolve.net <mailto:mainstay at csolve.net>>
>> Sent: Sat, Feb 19, 2022 9:21 am
>> Subject: Re: [Public-List] Charts and depth sounding
>> 
>> Good morning Rod… yes, that may be at issue here.  A reprint is not, in my terminology, a new chart.  A new chart is the result of a new survey… the CHS does them constantly.
>> 
>> I have no knowledge of how such things are handled in the States.
>> 
>> Thanks for the help.
>> 
>> Meanwhile, it was blowing the dog off the chain (so to speak) here a few hours ago, but now looking out the window I see a peaceful winter morning.  I think I’ll go and see if SURPRISE still has her tarp in place.
>> 
>> 
>> Gordon Laco
>> 426 Surprise
>> 
>> 
>> 
>> 
>> 
>> > On Feb 19, 2022, at 9:15 AM, Rod Symmes via Public-List <public-list at lists.alberg30.org <mailto:public-list at lists.alberg30.org>> wrote:
>> > 
>> > I think this may be a good example of the importance of definition......
>> > 
>> > I suspect that Gord is talking about issuing a "new" chart which contains new survey data and Michael is talking about getting a fresh copy of the old chart.
>> > 
>> > I may be mistaken.....
>> > Isn't language interesting 🤔
>> > 
>> > Rod
>> > 
>> ...
>