Recent Content by jehardiman

  1. jehardiman
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    Jon Boat Stability Questions

    Depends on how tall you are and how much you weigh. Empty, the heavier Lifetimer has 20% more GM (about 5 inches), but that has little to do with...
    Post by: jehardiman, Nov 2, 2025 in forum: Boat Design
  2. jehardiman
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    Time

    Saw the King, the Queen, the Baby, and the Barber....maybe a Master-at-Arms or two. The full Court.
    Post by: jehardiman, Oct 31, 2025 in forum: All Things Boats & Boating
  3. jehardiman
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    CCA vs Ah

    Yeah, you can do a lot of questionable stuff with an old 3-coil voltage regulator and a multi-meter.
    Post by: jehardiman, Oct 31, 2025 in forum: Outboards
  4. jehardiman
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    Fiberglass Hulls v Multiple Floats

    Welcome to the forums. Since you state that you are posting from Roatan Island in Honduras; and with the given size and type of vessel you are...
    Post by: jehardiman, Oct 30, 2025 in forum: Boat Design
  5. jehardiman
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    End of an era

    This iconic American ocean liner will be sunk on live video. Here’s what to expect....
    Post by: jehardiman, Oct 29, 2025 in forum: All Things Boats & Boating
  6. jehardiman
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    How to theoretically calculate the floating state and stability of a complex floating body

    Only for cylinders and spheres....
    Post by: jehardiman, Oct 28, 2025 in forum: Stability
  7. jehardiman
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    Ratchet Corrosion

    Everything phil says. I live in Washington state on the Kitsap peninsula and condensation is the real issue, especially the fall and spring....
    Post by: jehardiman, Oct 26, 2025 in forum: Boatbuilding
  8. jehardiman
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    titanic tourist sub

    Some useless news.... https://www.youtube.com/shorts/3Z8invXYAvE
    Post by: jehardiman, Oct 24, 2025 in forum: All Things Boats & Boating
  9. jehardiman
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    Why did the Titanic tour submarine implode?

    Some useless news.... https://www.youtube.com/shorts/3Z8invXYAvE
    Post by: jehardiman, Oct 24, 2025 in forum: Boat Design
  10. jehardiman
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    Fake fuel tank?

    Differences Between CE (Conformité Européenne) and CE (China Export) - HQTS...
    Post by: jehardiman, Oct 22, 2025 in forum: Powerboats
  11. jehardiman
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    Without simulation, how can we calculate and prove the difference in resistance between the bow and

    And I bet you want want it to be planing also.... That SoR is a very different requirement than a typical 'ship' as you asked about in the...
    Post by: jehardiman, Oct 18, 2025 in forum: Boat Design
  12. jehardiman
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    Keel cooling design for electric inboard

    If it is all copper, then 50 50 lead tin is the perfered. Kinda hard to find as gonzo says becasue it cannot be used in potable water systems,...
    Post by: jehardiman, Oct 17, 2025 in forum: Boat Design
  13. jehardiman
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    Without simulation, how can we calculate and prove the difference in resistance between the bow and

    I concur with mc_rash. There was a large amount of primary investigation in the late 19th through mid 20th centuries specifically addressing this...
    Post by: jehardiman, Oct 17, 2025 in forum: Boat Design
  14. jehardiman
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    Titanium Seacocks are Here

    Notice where titanium and graphite are on the Galvanic Chart. [IMG]
    Post by: jehardiman, Oct 17, 2025 in forum: Materials
  15. jehardiman
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    Titanium Seacocks are Here

    Again, for piping, the material is selected for corrosion resistance not strength. A large number of warships now use titanium for piping in the...
    Post by: jehardiman, Oct 17, 2025 in forum: Materials