Mr Efficiency's Recent Activity

  1. Mr Efficiency replied to the thread Hickman style hull any good for low powered outboard Houseboat?.

    If he is happy with 5-6 knots, submerged transoms are a handicap.

    Feb 25, 2021 at 8:13 PM
  2. Mr Efficiency replied to the thread Type of wood and suppliers of timber for supports in Australia?.

    Not all marine ply will be encapsulated, of course, but this Hoop Pine is the standard choice for locally made marine ply, I guess a...

    Feb 25, 2021 at 7:54 PM
  3. Mr Efficiency replied to the thread Type of wood and suppliers of timber for supports in Australia?.

    Boatcraft Pacific specialize in boat timbers and plywood, can't speak to what they are like to deal with, I haven't built much in the...

    Feb 25, 2021 at 7:02 PM
  4. Mr Efficiency replied to the thread Hickman style hull any good for low powered outboard Houseboat?.

    You don't want transom drag, he has no ambitions for speed.

    Feb 25, 2021 at 6:44 PM
  5. Mr Efficiency replied to the thread Hickman style hull any good for low powered outboard Houseboat?.

    The sled is inferior unless he wants speed, and is powering accordingly, he needs a barge with a raked entry so it doesn't throw water...

    Feb 25, 2021 at 5:45 PM
  6. Mr Efficiency replied to the thread Hickman style hull any good for low powered outboard Houseboat?.

    The problem with pontoons is vertical height goes up sharply, but he says he doesn't want a barge, I seem to recall. I think I would go...

    Feb 25, 2021 at 5:17 PM
  7. Mr Efficiency replied to the thread 20ft Nemesis Cat.

    APB, what is the deadrise angle of your hulls, and the width of the flat at the chine ? Are you having outboard pods, or just transom hung ?

    Feb 25, 2021 at 4:49 PM
  8. Mr Efficiency replied to the thread 20ft Nemesis Cat.

    I have certainly learnt here ( I think) why the SA cats are the way they are, largely the surf launch requirement. That keeps them...

    Feb 25, 2021 at 4:48 PM
  9. Mr Efficiency replied to the thread 20ft Nemesis Cat.

    It isn't so much heeling as a rotational effect than can occur in unusual wave conditions, confused seas, I'm sure you are familiar with...

    Feb 25, 2021 at 4:41 AM
  10. Mr Efficiency replied to the thread 20ft Nemesis Cat.

    this was an early model 20' shark cat, I would say the hulls would be under 2' wide, and actually I think dead flat at the transom at...

    Feb 25, 2021 at 4:09 AM
  11. Mr Efficiency replied to the thread 20ft Nemesis Cat.

    The best prevention is slim hulls and heavy boats.

    Feb 25, 2021 at 3:54 AM
  12. Mr Efficiency replied to the thread 20ft Nemesis Cat.

    Under some wave circumstances a rotational force can arise, 99.9% of the time, OK, it's the 0.1% that gets you. A heeled cat does not...

    Feb 25, 2021 at 3:46 AM
  13. Mr Efficiency replied to the thread Hickman style hull any good for low powered outboard Houseboat?.

    Pontoons probably the way to go.

    Feb 25, 2021 at 3:26 AM
  14. Mr Efficiency replied to the thread 20ft Nemesis Cat.

    What speed can these boats confortably hold plane at ? The Sharkcat 560 it would be close to 20 knots, these fat boat should be less.

    Feb 25, 2021 at 2:22 AM
  15. Mr Efficiency replied to the thread 20ft Nemesis Cat.

    The Cobra Cat is a "fatty" going on those pix ! These boats do concern me a little as regards dynamic stability, but can't be too much...

    Feb 25, 2021 at 2:20 AM