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Thread: MPH Vs. Knots?

  1. #1
    Pit Monkey First Class
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    MPH Vs. Knots?

    I know they say there is no such thing as a stupid question but ill have to admit i feel abit dumb for this one but ill ask anyway.

    What is the difference in Knots and miles and how many knots equal a mile? Or how many miles equal a knot? I have always just gone by Mile per hour

    Any help or info is much appreciated

    Con22

  2. #2
    Striper King matey8941's Avatar
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    1 knot = 1.1508 mph


    rounded off 1 knot equals about 1.15 mph

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    I think Admin is going to let me have this space Proheat's Avatar
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    Here is a conversion chart.
    Conversion table for
    knots to miles per hour KTS to MPH 5 Knots = 5.8 MPH
    10 Knots = 11.5 MPH
    15 Knots = 17.3 MPH
    20 Knots = 23.0 MPH
    25 Knots = 28.8 MPH
    30 Knots = 34.6 MPH
    35 Knots = 40.3 MPH
    40 Knots = 46.1 MPH
    45 Knots = 51.8 MPH
    50 Knots = 57.6 MPH
    55 Knots = 63.4 MPH
    60 Knots = 69.1 MPH
    65 Knots = 74.9 MPH
    70 Knots = 80.6 MPH
    75 Knots = 86.4 MPH
    80 Knots = 92.2 MPH
    85 Knots = 97.9 MPH
    90 Knots = 103.7 MPH
    95 Knots = 109.4 MPH
    100 Knots = 115.2 MPH
    105 Knots = 121.0 MPH
    110 Knots = 126.7 MPH
    115 Knots = 132.5 MPH
    120 Knots = 138.2 MPH
    125 Knots = 144.0 MPH
    130 Knots = 149.8 MPH
    135 Knots = 155.5 MPH
    140 Knots = 161.3 MPH
    145 Knots = 167.0 MPH
    150 Knots = 172.8 MPH

  4. #4
    Sit down Shut up And fish Innovator's Avatar
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    Its a good question, I have no idea of the origins of the nautical mile vs. the statute mile, but a nautical mile is 800ft longer than a statute mile, Thus a knot= 1 nautical mile per hour.

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    Striper King matey8941's Avatar
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    5 Knots = 5.8 MPH
    10 Knots = 11.5 MPH
    15 Knots = 17.3 MPH
    20 Knots = 23.0 MPH
    25 Knots = 28.8 MPH
    30 Knots = 34.6 MPH
    35 Knots = 40.3 MPH
    40 Knots = 46.1 MPH
    45 Knots = 51.8 MPH
    50 Knots = 57.6 MPH
    55 Knots = 63.4 MPH
    60 Knots = 69.1 MPH
    65 Knots = 74.9 MPH
    70 Knots = 80.6 MPH
    75 Knots = 86.4 MPH
    80 Knots = 92.2 MPH
    85 Knots = 97.9 MPH
    90 Knots = 103.7 MPH
    95 Knots = 109.4 MPH
    100 Knots = 115.2 MPH


    and so on...i found that on some site

  6. #6
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    A knot is 1.15 miles per hour and 1 knot is 1 nautical mile.

  7. #7
    Striper King matey8941's Avatar
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    Quote Originally Posted by Proheat View Post
    Here is a conversion chart.
    Conversion table for
    knots to miles per hour KTS to MPH 5 Knots = 5.8 MPH
    10 Knots = 11.5 MPH
    15 Knots = 17.3 MPH
    20 Knots = 23.0 MPH
    25 Knots = 28.8 MPH
    30 Knots = 34.6 MPH
    35 Knots = 40.3 MPH
    40 Knots = 46.1 MPH
    45 Knots = 51.8 MPH
    50 Knots = 57.6 MPH
    55 Knots = 63.4 MPH
    60 Knots = 69.1 MPH
    65 Knots = 74.9 MPH
    70 Knots = 80.6 MPH
    75 Knots = 86.4 MPH
    80 Knots = 92.2 MPH
    85 Knots = 97.9 MPH
    90 Knots = 103.7 MPH
    95 Knots = 109.4 MPH
    100 Knots = 115.2 MPH
    105 Knots = 121.0 MPH
    110 Knots = 126.7 MPH
    115 Knots = 132.5 MPH
    120 Knots = 138.2 MPH
    125 Knots = 144.0 MPH
    130 Knots = 149.8 MPH
    135 Knots = 155.5 MPH
    140 Knots = 161.3 MPH
    145 Knots = 167.0 MPH
    150 Knots = 172.8 MPH
    hahah did u google it....thats what i did and this came up

  8. #8
    I think Admin is going to let me have this space Proheat's Avatar
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    Quote Originally Posted by matey8941 View Post
    hahah did u google it....thats what i did and this came up
    Yep!!-LOL

  9. #9
    Striper King matey8941's Avatar
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    Quote Originally Posted by Proheat View Post
    Yep!!-LOL
    hahaha...great minds think alike

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    AKA Capten Nimrod's Avatar
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    I love Google....

    Quote Originally Posted by Innovator View Post
    Its a good question, I have no idea of the origins of the nautical mile vs. the statute mile, but a nautical mile is 800ft longer than a statute mile, Thus a knot= 1 nautical mile per hour.
    In the ancient times, the only way to measure ship speed was to throw a wood log into the water and observe how fast it moves away from the ship. This approximate method of ship speed measurement was called 'Heaving the Log' and was used until 1500-1600s when the 'Chip Log' method was invented (both methods probably invented by Dutch sailors.)

    The 'Chip Log' apparatus consisted of a small weighted wood panel that was attached to the reel of rope, and a time measuring device: a half-minute sand glass (as shown in image below to the right.) Rope had knots tied at equal distances along the reel. Sailors would throw the wood panel into the sea, behind the ship, and the rope would start unwinding from the reel. The faster the ship was moving forward the faster the rope would unwind. By counting the number of knots that went overboard in a given time interval, measured by the sand glass, they could tell the ship's speed. In fact that is the origin of the nautical speed unit: the knot.

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