They admit it but still don't know how it happened.
Sorry for the quality. Picture is a letter in Pacific Yachting and clearly demonstrates the need for continued use of proper paper charts.
No, it really doesn't do that. Paper charts have their errors too. What it clearly demonstrates is the need for more than one set of charts to serve as a check on each other.
It may or may not also call Navionics into question as one's first choice. We have electronic "paper charts." Only difference in them and paper is they're always up to date. Also there is a system that Transas has that will keep the dates of your paper charts and give you a list of all updates since their issue.
Have also discovered that at least on computer, some features disappear at certain zoom levels.
Have also discovered that at least on computer, some features disappear at certain zoom levels.
You're right and it is not confined to the Gulf Islands. Never recorded information is why we need not become complacent and why local knowledge is often critical. Missing or dropping already recorded data, for whatever reason, reinforces the dangers of total (and sole) reliance on electronics.Not the first missing exposed rock in the gulf islands. Also missing from CHS charts is a drying reef 100 yards due north of the top end of Walker Hook, Saltspring Island.
That was my point in saying it "demonstrates the need for continued use of proper paper charts."BandB said:No, it really doesn't do that. Paper charts have their errors too. What it clearly demonstrates is the need for more than one set of charts to serve as a check on each other.
You're right and it is not confined to the Gulf Islands. Never recorded information is why we need not become complacent and why local knowledge is often critical. Missing or dropping already recorded data, for whatever reason, reinforces the dangers of total (and sole) reliance on electronics. That was my point in saying it "demonstrates the need for continued use of proper paper charts."
at a zoom level considered too close for the long distance of that leg of the trip. Had the navigator used a closer zoom or a raster chart or a paper chart, the reef would have been obvious.
Yes, I said proper paper charts, I stick with that comment and I can pick word nits too. Surely you've seen what can pass for "some form of back up charts?"BandB said:But you indicated it demonstrates the need for proper paper charts and it does not do that. It simply demonstrates the need for some form of back up charts, but in no way indicates they need to be paper.
Yes, I said proper paper charts, I stick with that comment and I can pick word nits too. Surely you've seen what can pass for "some form of back up charts?"
I guess I'm too old to just give up on the CHS and NOAA paper stuff.
And I'm not interested in turning this into a yes it is, no it isn't a chart/trawler/pigmy debate.
Exactly.BandB said:I've seen what can pass as some form of charts.
In that scenario any boaters should know the potential for the bottom changing in any number of circumstances whether it's Toba Inlet or Tilloo Cut. Otherwise...not smart....finding out the shoal they ended up on had formed during that time.
Do Quimby's 1992 Cruising Guide and Wilensky's Cruising Guide to the Abacos and Northern Bahamas qualify?Now a paper question for you. In what form do you have paper? Full size, 36" unbound? Bound? Reduced to pamphlet or notebook size? 2/3?
That was my point in saying it "demonstrates the need for continued use of proper paper charts."
But you indicated it demonstrates the need for proper paper charts and it does not do that. It simply demonstrates the need for some form of back up charts, but in no way indicates they need to be paper.
At any given time, my electronic charts are more accurate than your paper charts, unless you've completely updated all your paper charts through printing a new set today. Even if you ordered a set, they were outdated when received. Now, do you review all notices to mariners daily and update them manually? Perhaps so, but then you'd never have much time left for boating.
Raster charts will not lose detail as the zoom changes, but vector charts will. A well publicized case in point is a recent Volvo Ocean race, Where one of the competitors, with a pro Navigator aboard and in charge, hit a well known reef in the middle of the Indian Ocean, that was only visible at a zoom level considered too close for the long distance of that leg of the trip. Had the navigator used a closer zoom or a raster chart or a paper chart, the reef would have been obvious.
Having not yet moved to the marine digital age, I confess all I have is paper. Mostly outdated paper.
A very long time ago Capt. George Vancouver was busy charting. How did he keep from sinking his boat in the uncharted waters he plyed? Vigilance.
I always have two sets of charts running.
Have also discovered that at least on computer, some features disappear at certain zoom levels.
So, i use different charts on different platforms, always.
It's shown as an Islet.The Navionics app does not show it as drying.
A lot of the wrecks in Nootka Sound are from mistaking it for Juan de Fuca.A very long time ago Capt. George Vancouver was busy charting. How did he keep from sinking his boat in the uncharted waters he plyed? Vigilance.
Haha.Just checked Time Zero, Garmin BlueChart, both Navionics/Navionics HD, Plan2Nav all on an old Ipad. Nobeltec Odyssey, OpenCPN and Polar Navy on the boats laptops and all devices are showing the islet in question ............
A very long time ago Capt. George Vancouver was busy charting. How did he keep from sinking his boat in the uncharted waters he plyed? Vigilance.