Stability as key speed factor

Discussion in 'Boat Design' started by icetreader, Jan 27, 2018.

  1. icetreader
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    icetreader Senior Member

    A kayak going at 17 mph?... - Only if it is stable enough, and motorized.

    The Wavewalk S4 is a patented twin-hull watercraft that's officially designated as a kayak.
    It's stable enough to go at 17 mph when powered with a 9.8 HP outboard motor:





    More info >>
     
  2. jorgepease
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    jorgepease Senior Member

    looks like a rough ride but it did stay right side up ))
     
  3. DCockey
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    DCockey Senior Member

    Who has officially designated the Wavewalk S4 as a kayak, and for what purpose?
     
  4. icetreader
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    icetreader Senior Member

    Yeah, the ride in choppy water can be a little bone rattling, but it's fun :)
    Stability isn't an issue, even when driving standing.

    The US Coast Guard (USCG). They inspect all boat (and kayak) manufacturers.
    This designation determines what safety and environmental requirements the vessel has to comply with.
    The designation is also important for dealers, since kayak dealers are not required to comply with regulations imposed on boat dealers.
     
  5. DCockey
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    DCockey Senior Member

    Canoes and kayaks are still required to have an HIN, which means that the builder needs an MIC. The builder and sellers are required to keep information for possible recalls. Boat Building Regulations | A handy chart of regulations for boatbuilders. http://newboatbuilders.com/pages/index2.html
    Examples: Stowboats canoe: Recalls http://www.uscgboating.org/content/recalls.php?pageNum_allRecalls=47&totalRows_allRecalls=1371
    Tarpon Fishing Kayaks: HULL; CRACKS http://www.uscgboating.org/content/recalls-details.php?id=070013T
     
  6. icetreader
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    icetreader Senior Member

    Naturally.
    Wavewalk, Inc. is a registered kayak manufacturer since 2004, and we get visits from USCG inspectors on a regular basis.
     
  7. gonzo
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    gonzo Senior Member

    What do you mean that kayak dealers don't have to comply with the same regulations as boat dealers?
     
  8. jorgepease
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    jorgepease Senior Member

    I have a couple of kayaks, they don't get registration numbers or titled.
     
  9. gonzo
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    gonzo Senior Member

    They do if you put a motor on them.
     
  10. DCockey
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    DCockey Senior Member

    Registration numbers and titles are different than HINs. HIN, aka Hull Identification Number, is a unique number marked on each boat by the manufacturer. The HIN must conform to a set of USCG rules and identify the builder and year built. They are essentially the same as the VIN (previously called "serial number") on a motor vehicle.
     
  11. DCockey
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    DCockey Senior Member

    Perhaps he is referring to some state regulations rather than federal regulations.
     
  12. gonzo
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    gonzo Senior Member

    I'm not sure how they can be different. A kayak has a HIN like any other vessel. There are no special requirements I can think of to sell boats, regardless of type.
     
  13. portacruise
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    portacruise Senior Member

    AFAIK, most states do not require a HIN or registration of a human power boat whatever the size- whether it be an air mattress or large home made boat. Last I heard, motorboats do not need registration if used only on private waters, whether it be owned personally or by a legal association or entity (at least in TX). Most states recognize each other's registration, which is a bonus if you have registration in a low fee state and sometimes use the motorboat in a high fee state.

    PC
     
  14. DCockey
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    DCockey Senior Member

    HIN for manufactured boats is a federal, not state, requirement. Homebuilt is generally up to the individual states, who issue the numbers.
     

  15. gonzo
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    gonzo Senior Member

    Unfortunately, that is not correct. Size matters and in most states anything over 16 feet will require registrations. Some states, like Michigan, require all vessels to be resistered.
     
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