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SUBSIM: The Web's #1 resource for all submarine & naval simulations since 1997 |
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#1 |
Electrician's Mate
![]() Join Date: May 2005
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http://www.metric-conversions.org/cg...&from=14&to=10
While trying to get comfortable with manual plotting I came across the above conversion table. Wish I had the smarts to make it a drop down like the Captain Cox Pacific map. (hint :hmm: ) |
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#2 | |
Rear Admiral
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#3 |
Navy Seal
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As per Edward Beach, "Run Silent, Run Deep" etc, all sub skippers used the 1 nm = 2000 yards conversion when doing calculations. It's plenty close enough to hit anything you shoot at. Overly precise numbers are useless as your measurement methods aren't as accurate as your numbers. For instance, just how accurate is that stadimeter? I'd say +-5%. Except sometimes when it's even worse. Using overly accurate conversion figures gives you a false impression of accuracy that will definitely bite you in the keister. We're left with a chart which has no application because by the time you pull down the chart, you could have figured the answer several times in your head.
I'm sure we have a physical scientist around here who can explain the concept of significant figures better than I can.
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Sub Skipper's Bag of Tricks, Slightly Subnuclear Mk 14 & Cutie, Slightly Subnuclear Deck Gun, EZPlot 2.0, TMOPlot, TMOKeys, SH4CMS |
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#4 |
Lucky Jack
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All the same, I'm going to print it up and use it.
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“You're painfully alive in a drugged and dying culture.” ― Richard Yates, Revolutionary Road |
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#5 | |
Electrician's Mate
![]() Join Date: May 2005
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#6 |
Lucky Jack
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I want this for one reason. If I get a sound contact I will ping the contact to get the yards distance. Sometimes I get 30000 yards. At that point I like to convert the yards to NM. This is a quick reference for me.
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“You're painfully alive in a drugged and dying culture.” ― Richard Yates, Revolutionary Road |
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#7 | |
Rear Admiral
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I know in TM, i added this quick conversion chart to the help menu (cause i ahve a speed to distance conversion chart in CC's gramaphone/ pacific pulldown map mod:
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#8 |
Eternal Patrol
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My current cell phone has a converter function, with several empty slots. They are now full of NM-Km, NM-miles etc.
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“Never do anything you can't take back.” —Rocky Russo |
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#9 | ||
Navy Seal
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Reading assignment, all by Edward Beach: Run Silent, Run Deep. Cold is the Sea. Dust on the Sea. Figuring this stuff and more will be second nature when you're done. @Steve: THOSE are useful conversions!!!! @self: You know it occurs to me that in the war, they would be using slide rules. Anybody use one of those lately? Any young whipper snappers even know one if it bit you? ![]()
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Sub Skipper's Bag of Tricks, Slightly Subnuclear Mk 14 & Cutie, Slightly Subnuclear Deck Gun, EZPlot 2.0, TMOPlot, TMOKeys, SH4CMS Last edited by Rockin Robbins; 10-12-07 at 07:05 PM. |
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#10 | |
Eternal Patrol
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I was going to go all uppity and point out that one nautical mile is actually 2025.3718 yards, but then I realized that you probably already knew that. Then I realized that you're right - as far as quick figuring goes, that method is as simple as can be. I wish I'd thought of it years ago.
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#11 |
Electrician's Mate
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I don't care what you say, Rockin Robbins. I'm still glad for the chart because if I didn't mention it I probably never would have learned about your quick, easy, and accurate mental conversion method. Thanks for the lesson.
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#12 | |
Navy Seal
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Sub Skipper's Bag of Tricks, Slightly Subnuclear Mk 14 & Cutie, Slightly Subnuclear Deck Gun, EZPlot 2.0, TMOPlot, TMOKeys, SH4CMS |
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#13 | |
Grey Wolf
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Heh. Do you get 5 full bars of signal near Guam? :rotfl:
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#14 |
Sailor man
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I use 1NM = 2000 yds on my real Sub.
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#15 |
Eternal Patrol
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That's why they invented the phrase "close enough for government work".:rotfl:
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“Never do anything you can't take back.” —Rocky Russo |
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