Posted on Thursday, 24th December 2009 by admin

I have a small motorboat that has an 8 hp motor. How many mph is that? Thanks!

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Posted in Product Guides | Comments (9)

9 Responses to “How Many Mph Is An 8 Hp Boat Motor?”

  1. Tenerife Car Rental Says:
    December 24th, 2009 at 7:59 pm

    You are not giving enough information to even make a guess!
    What would be needed to work into the fourmla would include:
    What kind of boat? Shape of the hull?
    What does the boat weigh? How many people in the boat and what do they weigh? Is the bottom of the boat Foul or is it Clean waxed and polished? Are you going with or against the wind and current?How strong are they? What are the sea
    conditions ?(waves chop fetch)
    If you want to assume that all of the above are medium then guess that your speed would be medium 10 to 15 Konts not MPH

  2. jesse m Says:
    December 25th, 2009 at 12:14 am

    It depends on weight and drag, but I estimate that you can get a top speed of 10-12 mph

  3. Rango Says:
    December 25th, 2009 at 2:08 am

    too many variables there
    the shape of boat, the weight it is carrying
    I have a small aluminum boat and an 8 hp motor, with just me it goes about 15 mph, with two people it only does about half that much.
    the advice about borrowing a gps is a good one, they are pretty common, you probably know someone with one.

  4. G T Says:
    December 25th, 2009 at 8:39 am

    It really depends on a lot of factors. But the main ones are weight and drag of your boat.
    Borrow a GPS unit from someone and take a ride. My guess is probably around 8mph give or take a couple of miles per hour.

  5. phillip b Says:
    December 25th, 2009 at 10:22 am

    Hi there
    You need to be more specific with your question.Without knowing what all the boat details are there is no way to answer properly except that theroeticly the smaller boat will travel faster than the larger one with the same moter on it.

  6. bill f Says:
    December 25th, 2009 at 4:45 pm

    more then likely a boat that has that size of motor unless it is back up on a smaller sail boat, will have oar locks, and if that is the case it will sail much faster then you can row anyway pending on the vessel 3 to15 mph is best you can hope for.
    that is like 2 – 11 knots pending on the design of vessel;)

  7. sevenout Says:
    December 25th, 2009 at 4:45 pm

    not too fast less than 10mph..depending on certian factors

  8. Ben C Says:
    December 25th, 2009 at 8:20 pm

    Completely dependent on the size, shape and weight of the boat.

  9. Special K Says:
    December 25th, 2009 at 8:37 pm

    depends on wieght and drag
    ask more speciafically please

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