Navionics differences - Page 2 - SailNet Community
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post #11 of 19 Old 01-26-2014
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Re: Navionics differences

Gold will do you fine.
edit: Alex has a very good point about the value of tidal info.

It's 5 o'clock somewhere:


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Last edited by bljones; 01-26-2014 at 03:13 PM.
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post #12 of 19 Old 01-26-2014
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Re: Navionics differences

Gold not showing tides and currents is a major downside for an area with 10-15 tidal swings like the Salish Sea. You can supplement that by figuring those out on paper or using a tablet-based chart, but I did find it really useful to have them on the plotter.

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post #13 of 19 Old 01-26-2014 Thread Starter
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Re: Navionics differences

So with platinum, which that 913p+ looks like a great coverage area, it shows currents?

Last summer I used washburns tables with the Canadian hydrographic arrows book. Will p+ show something like that, speeds and directions?

Say I want to go through gabriola pass. Will I be able to pull up slack on the plotter? If so that is insanely cool.


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post #14 of 19 Old 01-26-2014
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Re: Navionics differences

Quote:
Originally Posted by northoceanbeach View Post
So with platinum, which that 913p+ looks like a great coverage area, it shows currents?

Last summer I used washburns tables with the Canadian hydrographic arrows book. Will p+ show something like that, speeds and directions?

Say I want to go through gabriola pass. Will I be able to pull up slack on the plotter? If so that is insanely cool.
My plotter shows the current in the passes 'live', but doesn't seem to have the current tables for predictions. In that regard it will not replace the regular 'Ports and Passes' or the gov't booklets. It does have the tide tables for your general location.

We found the current predictions and readings on NavionicsHD on our Ipad somewhat suspect last summer, but quite liked the program for planning (no GPS - Wifi only) otherwise.

Ron

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post #15 of 19 Old 01-26-2014
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Re: Navionics differences

Plantium (913p+) shows live and predicted currents and tides on my Raymarine e7d. You can get a tide and current chart for anywhere in the vicinity, and search for the tides closest to your current location. I spot checked them against the BC current charts and the predictions were identical, but a lot easier to figure out.

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post #16 of 19 Old 02-06-2014 Thread Starter
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Re: Navionics differences

I called navionics. They were helpful. That Canada and US navionics plus is a blank 2gb card and you get to pick up to 2gb anywhere you want in the us and Canada. Seems pretty cool. The only feature that I really like about the platinum, never having actually used it is the currents. Maybe I would be surprised at how some of the other features are useful. Such as photos of harbors and such. In cruising guides I had, sometimes the pictures did help.

Actually I navigated all through the gulf islands last year using pictures from a cruising guide since they were the one place I didn't have a paper chart of.


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post #17 of 19 Old 02-06-2014
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Re: Navionics differences

I think I probably refer the currents as often as I refer to my charts. They are so critical for cruising around here.

Having said that you could save money by figuring out currents using a phone or tablet app in the morning and writing them down for quick reference from the cockpit. I find it handy to be able to refer to them from the plotter though.

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post #18 of 19 Old 02-06-2014 Thread Starter
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Re: Navionics differences

I don't know. I'm tempted. Like you say, currents are critical. I'm no pro but there are some places I can get myself without a chart if need be. But I can't predict current. I can't go through cattle pass, for example, if I don't know the currents. If that platinum show everything it sounds worth it.

Not only that but it called vancouver island, but it looks like really all the main cruising grounds from puget sound, Howe sound, desolation....sound. Really the places a PNW sailor goes 99% of the time.


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post #19 of 19 Old 02-07-2014
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Re: Navionics differences

Yes, that is why I selected it. It covers the grounds where I expect to cruise around here.

It is worth checking with your GPS manufacturer to see how they show you the currents. On my Raymarine e7d it is pretty nice, although not quite as nice as how deepzoom.com shows them.

When I was doing a lot of kayaking I would just look up current stations beforehand and write down the numbers that I needed every day. That works on sailboats too, it just isn't quite as easy. I still do it daily when planning my cruising, especially when we were in the Discovery Islands and could expect to go through 3 to 6 tidal passes in a day.

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