Hickman style hull any good for low powered outboard Houseboat?

Discussion in 'Boat Design' started by Stofferaus, Feb 24, 2021.

  1. BlueBell
    Joined: May 2017
    Posts: 2,685
    Likes: 961, Points: 113
    Location: Victoria BC Canada

    BlueBell . . . _ _ _ . . . _ _ _

    Post #14, thank you.
    I looked everywhere for it and couldn't see.

    Stofferaus,
    Why no barge?
    It seems like a good solution.
    I've been in 3' - 5' seas in mine with no problem.
    But it's not really very comfortable above 2' chop.
     
    Last edited: Feb 26, 2021
    DogCavalry likes this.
  2. gonzo
    Joined: Aug 2002
    Posts: 16,790
    Likes: 1,714, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    25HP on a 30 foot houseboat is not going to get it even close to planing.
     
  3. DogCavalry
    Joined: Sep 2019
    Posts: 3,078
    Likes: 1,572, Points: 113
    Location: Vancouver bc

    DogCavalry Senior Member

    I understand that. But the otherwise supremely efficient sea sled form is only constrained by loss of efficiency from the submerged transom. And I'd be willing to bet that at some point a 100 hp outboard will get hung off that transom. Maybe an owner wants to relocate at 25mph instead of 5, so they borrow the bigger engine for a day.

    A 30 by 8 sea sled at the OPs SOR upper weight limit is only at 5¾" (15cm) immersion. Bevelling off that immersed area at a barge like angle only requires a 12" bevel. If that transition has a sharp edge like a disrupter, the boat has it all. It's the best at everything. And the cheerleaders rush the field for smooches.
     
    Last edited: Feb 26, 2021
    Stofferaus likes this.
  4. DogCavalry
    Joined: Sep 2019
    Posts: 3,078
    Likes: 1,572, Points: 113
    Location: Vancouver bc

    DogCavalry Senior Member

    Man! That Dog guy sure loves sea sleds!
     
    Stofferaus likes this.
  5. Mr Efficiency
    Joined: Oct 2010
    Posts: 10,386
    Likes: 1,042, Points: 113, Legacy Rep: 702
    Location: Australia

    Mr Efficiency Senior Member

    I don't know what the cure is.
     
    DogCavalry likes this.
  6. bajansailor
    Joined: Oct 2007
    Posts: 3,596
    Likes: 1,561, Points: 113, Legacy Rep: 37
    Location: Barbados

    bajansailor Marine Surveyor

    Everything is always a compromise with boat designs, and some are better compromises than others.

    Sea sleds do have a lot of attributes though, along with the inevitable compromises.
    Way to go John - I just wanted to say something so that I am reminded of future posts on here.
     
    Ad Hoc, BlueBell and DogCavalry like this.
  7. DogCavalry
    Joined: Sep 2019
    Posts: 3,078
    Likes: 1,572, Points: 113
    Location: Vancouver bc

    DogCavalry Senior Member

    We already know it's not more cowbell, because we tried that.
     
  8. BlueBell
    Joined: May 2017
    Posts: 2,685
    Likes: 961, Points: 113
    Location: Victoria BC Canada

    BlueBell . . . _ _ _ . . . _ _ _

    8800 pounds sailing / 1000 pounds lift per inch = 8.8 inches draught
    John , could you show your calculations please, as I get 50% more draught than you.

    Also, your "supremely efficient" sea sled hull is constrained by greater wetted area than a barge because of the catamaran style hulls forward.
    This would be exaggerated in displacement mode like we're talking in this thread.
     
    DogCavalry likes this.
  9. DogCavalry
    Joined: Sep 2019
    Posts: 3,078
    Likes: 1,572, Points: 113
    Location: Vancouver bc

    DogCavalry Senior Member

    On checking my math, I got the same answer you did.

    Increased wetted area forward would be the case. The improved resistance to chop may be a higher priority than the increase in fuel consumption.
     
  10. DogCavalry
    Joined: Sep 2019
    Posts: 3,078
    Likes: 1,572, Points: 113
    Location: Vancouver bc

    DogCavalry Senior Member

    Stofferaus, bajansailor and BlueBell like this.
  11. BlueBell
    Joined: May 2017
    Posts: 2,685
    Likes: 961, Points: 113
    Location: Victoria BC Canada

    BlueBell . . . _ _ _ . . . _ _ _

    Our new friend, Stofferaus, is having a hard time navigating the Forum.
    I PM'ed him and this is his reply to post #31 above:

    "Sorry I’m new and not sure how to his come up. If it’s my thread or whatever it’s called, I’m not wanting a barge hull on a light weight trailable houseboat under 2500kg. Hull possible aluminium and upper structure fibreglass covered foam panels. Whole thing 3000 mm x 10000mm, with 1000 deck out the back and 2400 mm deck with roof over deck out the front. Don’t want a barge hull because although low powered with 2 x 25 hp outboards, I would like to handle some choppy water. 10-15 knots with 1000mm or 3’3” waves.Was thinking Cat hulls or Hickman Sea Sled type hull."

    BB
     
  12. Mr Efficiency
    Joined: Oct 2010
    Posts: 10,386
    Likes: 1,042, Points: 113, Legacy Rep: 702
    Location: Australia

    Mr Efficiency Senior Member

    For starters, 2.5 m is the legal trailing width, 10m simply won't come in under 2500kg, so a bit of revision of ideas is required.
     
  13. BlueBell
    Joined: May 2017
    Posts: 2,685
    Likes: 961, Points: 113
    Location: Victoria BC Canada

    BlueBell . . . _ _ _ . . . _ _ _

    Read the post, man, 2400 mm is 2.4 m which is LESS than your legal limit of 2.5m.

    On what do you base your gross assumption that he's not getting in under 2500kg dry weight?
    Did you read his premise?

    Not very constructive input for a guy who's struggling here Mr E.
    I find you careless at others expense.
    Perhaps you just don't realize it.
     
  14. Mr Efficiency
    Joined: Oct 2010
    Posts: 10,386
    Likes: 1,042, Points: 113, Legacy Rep: 702
    Location: Australia

    Mr Efficiency Senior Member

    Are there two different people here who want a houseboat on a sea sled ? The only fella I saw, was wanting one that would be trailable under 2500kg. 3000mm x 10000mm is not practical to trail, and certainly won't come in under 2500kg on the trailer, so where am I wrong ?
     
    Stofferaus likes this.

  15. Mr Efficiency
    Joined: Oct 2010
    Posts: 10,386
    Likes: 1,042, Points: 113, Legacy Rep: 702
    Location: Australia

    Mr Efficiency Senior Member

    *crickets chirping*
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.