Question about ship speed and distance.

[dtindc70]

So, I spot a ship going 7 Kts. To me, that ship is traveling seven nautical miles per hour.

If I want to plot the distance that I think the ship will travel within one hour, I figure that's about 24500 meters. My thought process is 3500 meters per mile, so that's how I arrive
at this figure.

Something tells me this computation isn't quite accurate - namely, I undershoot most of the ships. Can someone provide a little insight on how many meters a 7 kt ship will travel in an hour?

Thanks...

[lecek]

7 * 1.85 (rough) = 12.95 Kilometers. I just go with 13.

1 Nautical mile = 6000(+) yards = around 5500 Meters.

[panthercules]

Originally posted by lecek:
7 * 1.85 (rough) = 12.95 Kilometers. I just go with 13.

1 Nautical mile = 6000(+) yards = around 5500 Meters.

Not exactly - actually, a nautical mile = 6,000 FEET, i.e., only 2,000 yards (just slightly longer than the 1,760 yards in a regular mile), so roughly 1,850m per nautical mile

[Grey004]

Roughly estimating if a ship is moving at 7knts in 1 hour it has travelled 11.2kms,working on the theory that,1 nautical mile is equal to 1.2land miles and 8kms is equal to 5 miles.

Therefore to simplify the calculated distance,just multiply the speed the ship is travelling (x) by 1.6 then multiply that by time travelled you should come up with the optimal distance your target should be at.

It may sound a bit iffy but its the method I use to get ahead,and be lying in wait for my victim.

[Kuikueg]

You could try this easy mental calculation method:
Take the speed in knots, double it four times and set the decimal point one place backwards. I.e:

7 knots -> 14 -> 28 -> 56 -> 112 -> 11,2 Kms/h

I find this easy and fast to do, as normaly you have a whole number for the speed in knots.

Queequeg

[AT_Hawk_1970]

Originally posted by lecek:
7 * 1.85 (rough) = 12.95 Kilometers. I just go with 13.

1 Nautical mile = 6000(+) yards = around 5500 Meters.
It's too many farmers playing maritime simulators http://forums.ubi.com/groupee_common/emoticons/icon_biggrin.gif
1 nm mile = 1853 meter
1 sea mile = 4 nm
That why some oldtimers still call a nm for a quartermile.

From a CO
CO = Chief Officer

[Mylo42]

Get the Nomo mod. It's a very handy little graph that is on your nav map that allows for calculating speed, distance, time. I find it very useful and from what I understand, it is a tool that was actually used.

[dtindc70]

Where can one find the Nomo mod? (or most mods, for that matter)

[Mylo42]

Many mods on http://www.subsim.com