Cruising Sailors Forum Archive
I guess no one uses depth sounder alarms anymore? 
In Response To: That's been debunked, someone over on SA posted a diagram of the original Exclusion Zone prior at the start of Leg 2... 
()
() It's not a bad idea if you are expecting only deep ocean. A depot sounder is perhaps the most underused and under appreciated navigation tools, and they are usually quite reliable.
Messages In This Thread
- Video of Vestas Wind grounding released...
- Watching the beginning a second time, one thing is abundantly clear to me...
- Can't help but wonder what they were "checking out..."
- Incredible video. This is copy on YouTube which may view better.
- A crash gybe or tack is probably easier said than done...
- As I look at it, they were on a port tack
- You can bet the remaining 6 VOR boats are running their depth sounders now...
- What a crash! I'm glad they aren't blaming the zooming red herring.
- Doesn't sound like the issue of Zooming is a red herring, at all...
- His mistake, as he says. He checks on paper as well.
- From the sound of it, he looked at the paper chart before they were rerouted
- Hard to believe any reference to a paper chart was made within hundreds of miles prior to the grounding...
- Insurance probably isn't the issue...
- On my freakin' globe too!
- The owner should receive full value insured. That's what it's for, mistakes in navigation, etc.
- I posted an electronic chart on the other thread
- It's almost a carbon copy of what happened
- His mistake, as he says. He checks on paper as well.
- In a press conference this morning, they admitted the simple failure to zoom in sufficiently was the cause...
- Thanks. I didn't listen to the whole things, but ...
- Using the image you posted, Jon, I have a question
- Can Jon or anyone that has these e-charts, tell me the approximate NM distance across this screen shot?
- I don't have C-map for that part of the world...
- Scale on map you requested, Tom.
- Here's another map, it's a bit older...
- Note the light at the southwest end; and, the notes on "Strong Currents.
- Thanks, but I'm curious, how far out do you need to zoom(NM's of visible chart), when only 40 meter depths show?
- Not a lot -- couple of clicks.
- An illustration of the different levels of zooming...
- The lighthouse specs
- Good e-chart academics but I'd like to see the area on their screens and software.
- Sounds like all of the boats are running a routing program called Expedition...
- Wow! A world of potential distractions, for sure.
- "To win you have to finish"
- Seems like your post poses quite a conundrum for your thesis regarding paper charts
- Don't want to speak for the other Jon, but for me e-charts are far from useless, but OTOH raster are far from outdated.
- Well, I'm not proposing that these racers should be navigating solely using paper charts at all...
- I don't think my point is coming across well
- The Notice of the Race requires all boats to carry the "appropriate" paper charts for each leg...
- The fact that the data is there was necessary, but not sufficient. The boat got ahead of the navigator...
- The Notice of the Race requires all boats to carry the "appropriate" paper charts for each leg...
- I don't think my point is coming across well
- Nobody is asking the Volvo boats to plot on paper
- OK, here's an example to try to illustrate my point...
- Don't want to speak for the other Jon, but for me e-charts are far from useless, but OTOH raster are far from outdated.
- Wow! A world of potential distractions, for sure.
- Sounds like all of the boats are running a routing program called Expedition...
- The lighthouse specs
- Just a 'couple of clicks' away.
- An illustration of the different levels of zooming...
- Not a lot -- couple of clicks.
- Here's another map, it's a bit older...
- I don't have C-map for that part of the world...
- Thanks. I didn't listen to the whole things, but ...
- Doesn't sound like the issue of Zooming is a red herring, at all...
- What a crash! I'm glad they aren't blaming the zooming red herring.
- You can bet the remaining 6 VOR boats are running their depth sounders now...
- As I look at it, they were on a port tack
- I am SURPRISED the keal held up....
- This latest vid puts a whole new spin on it...
- A crash gybe or tack is probably easier said than done...
- Another vid, with some different material...
- EAG-Electronically Assisted Grounding-
- Paper vs Electronic
- What's that???
- Correction: Seal and Mud Islands
- I can see that happening. I had to zoom out to 90 NM for those islands to disappear on an ipad.
- At 19 knots, the boat is going through 300 yards in 10 seconds, or so.
- Do you remember the days of, "Oh my god, it's official, I don't know where we are?"
- I remember a few of those times. It was hard over
- I don't think anyone is expecting Volvo racers to plot o paper charts . . .
- I think the navigator(captain) said a last minute change left no time for the usual pre-course strategy?
- That's been debunked, someone over on SA posted a diagram of the original Exclusion Zone prior at the start of Leg 2...
- That's been debunked, someone over on SA posted a diagram of the original Exclusion Zone prior at the start of Leg 2...
- I think the navigator(captain) said a last minute change left no time for the usual pre-course strategy?
- I remember a few of those times. It was hard over
- Sorry, I should have said over 100 yards (316', or so) in 10 seconds
- Do you remember the days of, "Oh my god, it's official, I don't know where we are?"
- At 19 knots, the boat is going through 300 yards in 10 seconds, or so.
- I can see that happening. I had to zoom out to 90 NM for those islands to disappear on an ipad.
- Paper vs Electronic
- Watching the beginning a second time, one thing is abundantly clear to me...
