nautical slide rule

6SJ7GT · 04-14-08, 05:21 PM

I modified the one I made and added yards. Print this out with no scaling and pin the 2 wheels together to try it out. it doesn't look quite the same as the one above, but works the same.

TSD Computer.

For those who have never used this:
You line up the arrow with your speed on the outer wheel, then you can read time (hours) on the inner wheel vs distance on the outer wheel.

EXAMPLE
line up the arrow (1) with 22(kts), this is also 44000yds/hr. In 1/2 hr you will travel 11 mi or 22000 yards. in 34 hrs you will travel approx. 750 mi.

If you line up the 6 on the inner wheel with your speed, you can read the time in minutes, as the wheel repeats. 6~60~600...
Line up the 6 (60) with 8 kts. In 22 minutes you will travel approx 2.9 mi (5900 yds). You will travel 14 mi in 105 minutes.

Enjoy,
Mike

SH4 Real Navigation Thread

04-14-08, 05:21 PM	#11
6SJ7GT A-ganger Join Date: Mar 2008 Location: Wi. USA Posts: 71 Downloads: 10 Uploads: 1	I modified the one I made and added yards. Print this out with no scaling and pin the 2 wheels together to try it out. it doesn't look quite the same as the one above, but works the same. TSD Computer. For those who have never used this: You line up the arrow with your speed on the outer wheel, then you can read time (hours) on the inner wheel vs distance on the outer wheel. EXAMPLE line up the arrow (1) with 22(kts), this is also 44000yds/hr. In 1/2 hr you will travel 11 mi or 22000 yards. in 34 hrs you will travel approx. 750 mi. If you line up the 6 on the inner wheel with your speed, you can read the time in minutes, as the wheel repeats. 6~60~600... Line up the 6 (60) with 8 kts. In 22 minutes you will travel approx 2.9 mi (5900 yds). You will travel 14 mi in 105 minutes. Enjoy, Mike SH4 Real Navigation Thread