Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 14-03-2022, 09:23   #1
Registered User

Join Date: Nov 2005
Location: At the intersection of here & there
Boat: 47' Olympic Adventure
Posts: 4,728
Island charted in wrong place for 85 years

Further proof that all navigation information should be taken with a grain of salt, even the charts. Trust but verify. https://www.dailymail.co.uk/news/art...-85-years.html
Lodesman is offline   Reply With Quote
Old 14-03-2022, 09:33   #2
Registered User
 
Cheechako's Avatar

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 25,287
Re: Island charted in wrong place for 85 years

Many of the islands in the Sea of Cortez were off by a half mile or something like that for 150 years! Might still be on charts...?
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 14-03-2022, 09:58   #3
Registered User

Join Date: Sep 2014
Location: Fiji Airways/ Lake Ontario
Boat: Legend 37.5, 1968 Alcort Sunfish, Avon 310
Posts: 2,749
Images: 11
Re: Island charted in wrong place for 85 years

For years Google Earth reported that the largest uninhabited island in SoPac, Tetepare, was 50km from Rendova Island; it's more like 10km tops.

Most of the time I find shoals that aren't marked, or charted very well. We were sailing a beat well off a well known rock shoal when my wife pointed to a big log sticking up out of the water only 30m away and asked why it was there- we altered course immediately!
__________________
There are too many gaviiformes here!
Tetepare is offline   Reply With Quote
Old 19-03-2022, 10:32   #4
Registered User
 
Orion Jim's Avatar

Join Date: Dec 2008
Location: Noank, Ct. USA
Boat: Cape Dory 31
Posts: 3,097
Images: 8
Re: Island charted in wrong place for 85 years

There has been a lot of “correcting” going on for centuries. Our precise navigational tools have been a godsend. In times past it was advantageous to plot positions accurately to support your benefactors goals of trade and military advantage. It was also common to keep two sets of charts, one for your use and one to fall into the hands of your foes, whether military or trade. If their ships happened to founder the realm was secure for another day.
Orion Jim is offline   Reply With Quote
Old 19-03-2022, 10:58   #5
Registered User
 
Chotu's Avatar

Join Date: Jan 2018
Boat: 50ft Custom Fast Catamaran
Posts: 10,950
Re: Island charted in wrong place for 85 years

Quote:
Originally Posted by Tetepare View Post
For years Google Earth reported that the largest uninhabited island in SoPac, Tetepare, was 50km from Rendova Island; it's more like 10km tops.

Most of the time I find shoals that aren't marked, or charted very well. We were sailing a beat well off a well known rock shoal when my wife pointed to a big log sticking up out of the water only 30m away and asked why it was there- we altered course immediately!
Your AIS and chart plotter combined with autopilot didnít spot the log and shallow area???

Ha ha ha. Couldnít resist. A good reminder to use the eyeballs.
Chotu is offline   Reply With Quote
Old 19-03-2022, 15:39   #6
Registered User
 
Ballsnall's Avatar

Join Date: Dec 2019
Posts: 478
Re: Island charted in wrong place for 85 years

Quote:
Originally Posted by Chotu View Post
Your AIS and chart plotter combined with autopilot didnít spot the log and shallow area???
.
It wasn't a commerical log so AIS is not mandatory.
Ballsnall is offline   Reply With Quote
Old 19-03-2022, 15:40   #7
Registered User
 
Chotu's Avatar

Join Date: Jan 2018
Boat: 50ft Custom Fast Catamaran
Posts: 10,950
Re: Island charted in wrong place for 85 years

Quote:
Originally Posted by Ballsnall View Post
It wasn't a commerical log so AIS is not mandatory.
Ha ha ha ha. Thatís a good response!
Chotu is offline   Reply With Quote
Old 19-03-2022, 15:53   #8
Registered User
 
glenn.225's Avatar

Join Date: Jan 2008
Location: Kingston, ON
Boat: Albin Vega 27'
Posts: 524
Re: Island charted in wrong place for 85 years

There are sections of Newfoundland, last charted by Cook.



And I've found islands in the lower St Lawrence and rocks in Lake Ontario not charted.



Don't depend entirely on your chart.
__________________
Glenn
glenn.225 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
S57 ENC Charted feature missing brucechun OpenCPN 0 23-12-2018 06:11
Database of uncharted or wrong charted reefs and hazards? Franziska OpenCPN 11 24-03-2016 01:38
wrong time wrong place? uldinch Marinas 15 04-12-2015 17:11
un-charted reef : east turkey : navionics krissteyn Europe & Mediterranean 8 12-11-2013 09:10
Charted Depths in Pamlico Sound lancelot9898 Atlantic & the Caribbean 3 20-01-2012 03:27

Advertise Here


All times are GMT -7. The time now is 18:38.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.