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Old 12-19-2016, 01:07 PM   #1
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Calculate distance

Is there a website tool to input a starting point, bearing and speed to approx distance traveled in a given time?
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Old 12-19-2016, 01:12 PM   #2
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Simple: 60D=s*t, or s=60d/t or t=60d/s remember all solutions in time are in minutes, time in knots and distance in nautical miles.
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Old 12-19-2016, 01:24 PM   #3
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I'm having a "moment" this morning ... so 6.5 knots x 24 hours = 156nm? And in a bit of a rush.
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Old 12-19-2016, 03:08 PM   #4
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when the brain fails just enter the equation in google search for the answer.
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Old 12-19-2016, 03:12 PM   #5
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I'm having a "moment" this morning ... so 6.5 knots x 24 hours = 156nm? And in a bit of a rush.
Yes. If you averaged 6.5 knots over a 24 hr period, you will have covered 156nm.
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Old 12-19-2016, 04:21 PM   #6
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Yes. If you averaged 6.5 knots over a 24 hr period, you will have covered 156nm.
And you will be mighty tired!

You can figure out this stuff with a calculator or even on paper if you remember your math schooling.
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Old 12-19-2016, 06:14 PM   #7
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Old 12-19-2016, 07:01 PM   #8
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Is there a website tool to input a starting point, bearing and speed to approx distance traveled in a given time?
We've been using Visual Passage Planner. Ok for coastal but better for open water. You can enter your vessel performance characteristics and the month then pick your course for the seasonal changes and you can get a passage report. It also has world wide current and pilot charts. It's tool only.

Digital Wave - Visual Passage Planner
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Old 12-19-2016, 07:28 PM   #9
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The Navionics app will do this with its route planner on an iPad or iPhone. It will even give you fuel burn if you enter all the vessels details.
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Old 12-19-2016, 09:34 PM   #10
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If you can't do basic time-speed-distance calculations, with or without a calculator, you probably shouldn't go out of the harbor.
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Old 12-19-2016, 10:46 PM   #11
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The Navionics app will do this with its route planner on an iPad or iPhone. It will even give you fuel burn if you enter all the vessels details.
This is the coolest feature that was just added to the android versions of Navionics this week. It seems to work great with dock-to-dock auto-routing with just 2 clicks on the map to indicate start and stop points.

It gives me route distance, time and fuel burn (based upon boat settings).

I agree with the suggestion that if you're not up to speed on the fundamentals, it might not be a bad idea to take an online initial or refresher course. Unless we use the skills regularly, we risk losing them.

Be safe, stay dry, have fun.
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Old 12-19-2016, 11:01 PM   #12
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If you can't do basic time-speed-distance calculations, with or without a calculator, you probably shouldn't go out of the harbor.


For god sake don't tell that to a Polynesian fisherman
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Old 12-20-2016, 05:25 AM   #13
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For god sake don't tell that to a Polynesian fisherman
I was thinking the same thing about the boaties in the Torres Straits. Those guys live on the water but there's got to be at least one SAR per week and 90% of those are for fuel exhaustion.

Al that's interesting the android version of Navionics has just got the fuel calculation feature. The latest iPad version allows connection to the wi fi on an MFD and it work really well,

Brett
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Old 12-20-2016, 09:23 AM   #14
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If you can't do basic time-speed-distance calculations, with or without a calculator, you probably shouldn't go out of the harbor.


Even with all the websites, telephones and "apps", you really should have a set of basic skills to operate a boat.

I routinely look on the chart, determine how far I want to go that day and knowing my boat's average cruising speed, determine how long it should take to get there and what time I need to start to get there at a specific time.

It never occurred to me that I would need a website or special app to do that.
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Old 12-20-2016, 01:38 PM   #15
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I just use iNavx (when at home) or Coastal Explorer when on the boat and take the time to lay down route. We don't typically have a need to do anything more complicated. There are also time and distance tables available between ports, such as these websites:
http://nwcruising.net/ca-nm_index.html
https://www.scribd.com/mobile/doc/49...-Between-Ports
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Old 12-20-2016, 02:18 PM   #16
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If you can't do basic time-speed-distance calculations, with or without a calculator, you probably shouldn't go out of the harbor.

Let's not be too harsh. 😊

Some thoughts...
- Many here on TF have been navigating since they were young. Given our collective ages, that was a very long time ago.
- Those new to boating are used to smartphones with integrated gps and Navigation systems in cars. Our cars even tell us how many miles till we run out of fuel and worn us when we hit 50 miles remaining.
- There are some with way more skill and navigation experience than I will ever have who don't use paper charts anymore but rely on redundant electronic systems.
- Some folks don't recall that Distance=Velocity x Time since they may not have thought about that since junior high school nor may recall their algebra to know that D=VT also means that D/V=T.

So let's point out the new electronic tools that we all use but at the same time offer some direction where folks who have the interest can learn the basics of marine navigation and how to use the basic protractor, parallel rules, divider and hand compass.

It has been too many decades since I learned it so I am no help. Can anyone offer up a good, basic resource for the beginner on how to plot course, bearing, distance with a navigation chart?
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Old 12-20-2016, 04:03 PM   #17
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Take a course through the Coast Guard Auxiliary.
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Old 12-20-2016, 04:29 PM   #18
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Take a course through the Coast Guard Auxiliary.

Great suggestion for those with the time. However there must be some basic resources out there. Most folks here are smart enough to figure things from reading. Although my son's generation can only seem to learn by watching a YouTube video.
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Old 12-20-2016, 04:45 PM   #19
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I think Chapman's has a pretty good basic navigation section.
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Old 12-20-2016, 04:51 PM   #20
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Great suggestion for those with the time. However there must be some basic resources out there. Most folks here are smart enough to figure things from reading. Although my son's generation can only seem to learn by watching a YouTube video.



They said that about books many years ago . Isn't it learning that's important not how you did it ?
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