Lots of examples of bad charts out there.
In the case of the US minesweeper incident, though, that reef was charted
on some charts as the Greenpeace boat had wrecked there a few years earlier
and had reported it. But the US Navy wasn't using those charts as they
had their own. (thus reinforcing the 'open source versus proprietary'
debate.
Cheers
Colin
On Dec 1, 2014 3:03 PM, "Leslie Paal via CnC-List" <cnc-list@cnc-list.com>
wrote:
> and sometimes there are plain errors. For example the local Long Beach
> (CA) chart's insert for the downtown marina had the wrong longitude number
> inserted at one point. Off by 0.1 degree, quite a distance. I reported it
> some years ago, so probably fixed by now.
>
> Leslie
> --------------------------------------------
> On Mon, 12/1/14, Dennis C. via CnC-List <cnc-list@cnc-list.com> wrote:
>
> Subject: Re: Stus-List Navigation
> To: "Della Barba, Joe" <joe.della.ba...@ssa.gov>, "cnc-list@cnc-list.com"
> <cnc-list@cnc-list.com>
> Date: Monday, December 1, 2014, 5:47 AM
>
> I was
> motoring up a harbor looking at a nice Raymarine system
> showing the boat going through a sea wall 200 feet west of
> our actual position.
> Yesterday while motoring in the ICW
> channel in Santa Rosa Sound near Navarre, FL, the
> chartplotter boat took out several of the buoys on the right
> side of the channel.
> Dennis C.Touché 35-1
> #83Mandeville, LA
> Currently on the hook
> at30 23.054N 86 51.884W
>
> Sent from my iPhone
> On Dec 1,
> 2014, at 7:35 AM, "Della Barba, Joe via CnC-List"
> <cnc-list@cnc-list.com>
> wrote:
>
>
>
> #yiv5655659185
> #yiv5655659185 --
>
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> #yiv5655659185
> I am not sure where “where
> ever” is, but some areas out of the 1st world
> are using surveys from 100-200 years ago to make those
> electronic charts.
> Recently the US Navy drove a minesweeper onto a reef for
> just this reason. Also note the vector chart plotters will
> lose major details when zoomed out, including entire
> islands. This resulted in a multiple fatality in California
> recently.
>
>
>
> Joe Della Barba
>
>
> Coquina
> C&C 35 MK I
>
>
> From: CnC-List [mailto:cnc-list-boun...@cnc-list.com]
> On Behalf Of Letsgo Sailing via CnC-List
>
> Sent: Monday, December 01, 2014 6:59 AM
>
> To: cnc-list@cnc-list.com
>
> Subject: Re: Stus-List Navigation
>
>
>
> I used C-Map on Standard Horizon
> chartplotter and where ever I have sailed they where
> accurate to the foot.
>
>
> Yanni Boatless in
> Ontario
> Not for long…
>
> 92 Lebaron 3.0
> convertible
> 95 LeBaron 3.0 turbo
> convertible
> 07 Yamaha Straotoliner
> S
> SCRC 011059
> SRO 26-6483
>
> TURBO!!!!!cause bottles are for
> babies and superchargers blow!!!
> Which would you rather have, go
> fast goodies or shiny shoes?
> Your feet may look good but if
> your engine blows you ain't going nowhere
>
>
> From: CnC-List [mailto:cnc-list-boun...@cnc-list.com]
> On Behalf Of Colin Kilgour via CnC-List
>
> Sent: November 30, 2014 10:52 AM
>
> To: cnc-list@cnc-list.com;
> Kevin Driscoll
>
> Subject: Re: Stus-List Navigation
>
>
> Just because charts are digital
> doesn't mean they are accurate.
>
> Many digital charts are based on
> soundings that may literally be hundreds of years old and
> would certainly predate GPS.
>
> I was in Panama this summer and my
> Navionics gold charts would have had me drive over a bunch
> of reefs if I had let them. (I used paper charts from
> the cruising guide which were spot on)
>
> I'm not sure what the chart
> accuracy is in that part of the world, but if there was
> any question of dodgy charts, the race committee ought to
> have given that area a wide berth. It would have been
> simple to set up a waypoint well offshore
> in deep water. Putting people at risk that way is
> irresponsible, imo.
> Cheers
>
> Colin
>
> On Nov
> 29, 2014 10:57 PM, "Kevin Driscoll via CnC-List"
> <cnc-list@cnc-list.com>
> wrote:
>
> I heard it
> was a classic case of being too far zoomed out on the chart
> plotter. At least that's what the Volvo website alluded
> to.
>
>
> On Sat,
> Nov 29, 2014, 12:03 PM Don Newman via CnC-List <cnc-list@cnc-list.com>
> wrote:
>
> They were
> hit by Cyclone Suzie.
>
> Reported grounded Cargo Carajos Shoals, Mauritius 12 hours
> later.
>
>
>
>
>
> Don Newman
>
> 905 547 1750
>
>
>
> > On Nov 29, 2014, at 13:58, Brent Driedger via CnC-List
> <cnc-list@cnc-list.com>
> wrote:
>
> >
>
> > Sorry, this isn't C&C specific but important to
> our sport. Currently Team Vestas Wind is aground and
> planning to abandon ship. Is there any reason why a
> professionally crewed yacht with the latest and greatest nav
> equipment and shore assistance would come
> to this? Short of uncharted reefs but that doesn't
> sound to likely.
>
> > I'm curious to know what underwater unknowns
> you've come across while offshore.
>
> >
>
> > Cheers
>
> > Brent Driedger
>
> > 27-5
>
> > Lake Winnipeg
>
> >
>
> > Sent from my iPhone
>
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