darksythe
10-24-05, 04:06 AM
Ok well its another boring night at work so i put it to good(i think) work to develop a Estimated Time Enroute Equation. Now someone will probably post and easier way to fiqure it out so all my work will have been in vain :shifty: but it was still interesting to do.
Now i must state i am in no way a math whizz, so the format of the following may be in error. Please give feedback.
Also i must thank the Seawolves for the publication of the famed "6 Minute Rule" with out which this equation would not work.(Its in the blue book found on subguru if you dont got it get it!)
Speed = X
Miles = Y
Yards In 6 = D
Total Yards = A
Total Minutes = B
Total Hours = C
[(Y*200=D) (X*2025=A)] [(A/D=E)*6=B] B/60=C
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For those that find that equation difficult i will explain it now.
According to the Seawolves if you take your speed and multiply it by 2, then adding two zeros to the sum of that equation you will have the distance you travel in 6 minutes. Instead of doing it that way i have modified it to just multiply speed by 200 resulting in D.
20*200=4000<--D
Next we need to find out how many yards their are total in our journey for that we will take our total miles or X and multiply that by the number of yards in a Nautical Mile which is 2025 rounded off from 2025.37183, and this will give us our total yardage(Is that a word? lol) or A.
400*2025=810000<--A
Next we will take A(Total Yardage) and divide it by D(Yards In 6) multiply that by 6 and we will get how many minutes we will have in our trip total or B.
(810000/4000=202.5)*6=1215<--B
Then we will take B(Total Minutes) and divide it by 60 to get total hours(In decimal Format) to the end of our trip or C.
1215/60=20.25<--C
So to cover 400 miles at a speed of 20 Knots would take 20.25 hours or 20 Hours 15 Minutes.
You may ask your self who needs this formula?
Well the simple answer is skippers like me who like to make transits to and from there home port to their AOP(Area of Operation).
When done correctly this fomula works great. Now there is the possibility that i have overcomplicated this whole thing..... In that case you can just chalk it all up to the ramblings of an over worked night shift worker. :rotfl:
Now i must state i am in no way a math whizz, so the format of the following may be in error. Please give feedback.
Also i must thank the Seawolves for the publication of the famed "6 Minute Rule" with out which this equation would not work.(Its in the blue book found on subguru if you dont got it get it!)
Speed = X
Miles = Y
Yards In 6 = D
Total Yards = A
Total Minutes = B
Total Hours = C
[(Y*200=D) (X*2025=A)] [(A/D=E)*6=B] B/60=C
--------------------------------------------------------------------------------------
For those that find that equation difficult i will explain it now.
According to the Seawolves if you take your speed and multiply it by 2, then adding two zeros to the sum of that equation you will have the distance you travel in 6 minutes. Instead of doing it that way i have modified it to just multiply speed by 200 resulting in D.
20*200=4000<--D
Next we need to find out how many yards their are total in our journey for that we will take our total miles or X and multiply that by the number of yards in a Nautical Mile which is 2025 rounded off from 2025.37183, and this will give us our total yardage(Is that a word? lol) or A.
400*2025=810000<--A
Next we will take A(Total Yardage) and divide it by D(Yards In 6) multiply that by 6 and we will get how many minutes we will have in our trip total or B.
(810000/4000=202.5)*6=1215<--B
Then we will take B(Total Minutes) and divide it by 60 to get total hours(In decimal Format) to the end of our trip or C.
1215/60=20.25<--C
So to cover 400 miles at a speed of 20 Knots would take 20.25 hours or 20 Hours 15 Minutes.
You may ask your self who needs this formula?
Well the simple answer is skippers like me who like to make transits to and from there home port to their AOP(Area of Operation).
When done correctly this fomula works great. Now there is the possibility that i have overcomplicated this whole thing..... In that case you can just chalk it all up to the ramblings of an over worked night shift worker. :rotfl: