Hey Luc,Mike, and Talador, the mythical whatever...
Definitely a tall order (copied and pasted below). I'm not sure myself. Some days I think I've hit the sweet spot between cruising/liveaboard and moving at speed, and then.....
Looking to drop her in the water this summer for sea testing, but still a work in progress, and will no doubt remain so for the forseeable future, so all advice welcome, as long as it is about boats, and not airplanes.
BTW, latest power iteration has a sled and a ramp, for outboard (on sled) and Rib on ramp) dropping drop down about 1/3 from the rear.
Cheers,
Robin.
"Mike - "I look forward to seeing the design you eventually settle upon."
Well then help me out please. I am a better critic than a designer, and it shows. I look at everything out there and just see problems : (
Here are the goals.
!. The living accommodations have to be large enough and spacious enough for full time cruising for the next 10 to 15 years. Primarily to keep my wife happy. That means a full kitchen, storage, etc. and a bed she can make easily.
2. Shallow water capability. Our preferred anchorages and some passages are quite shallow. There is a spot just south of Duncan town in the Bahamas where there is a hurricane hole with beautiful beaches, island, etc. etc. that we love to sit at, great snorkeling, fishing, beach walking etc. Sneaking in there and anchoring during hurricane season is the goal.
3. Speed. I believe speed can cover a multitude of sins. like getting me through an inlet, in the daylight, with the tide and wind to my advantage. Vs wallowing around waiting for the night to pass and the weather to change.
4. I would like to build all the boat's fiberglass components in my basement. It is 44' long, 2500 square feet, I built an airplane there, and then assemble the boat on the coast.
The basic idea is a 20 m Harry Bi-plane, basically a catamaran design with a rotating wing mast in each hull. Think Team Phillips, minus the disaster.
In between each hull I would build the fiberglass equivalent of an airstream trailer for living accommodations. Rounded corners and edges go a long way to reduce drag and yet give spacious interior accommodations.
I personally like the idea of putting four retractable rudders in the hulls each one hydraulically steerable and mounting two small outboards on the sterns.
But in light of the 'discussion' with Rick I am rethinking the inboard mounted rudders. The HP rudder system is draggyer (sp) and wetter, but at the speeds I am aiming for has some very nice advantages. There is no point in going for flat out speed if I never intend to go flat out or have the power to do so. Then the HP rudders look very nice especially for my second most requirement, shallow draft. Is there a better way to do them, especially for the waves hitting the controlling structure?
And then the motors, I need the motors for anchoring and going in and out of inlets against the current and waves, etc. I am well aware of the problems with stern mounted motors and would prefer inboards, but then again they conflict with the shallow draft requirement.
And then the more subtle problems, should the entire structure be stiff and rigid? It adds weight and cost which becomes a downward design spiral. Or should the living pod basically be separate and not contribute to the structural stiffness? That is the way Team Phillips went.
Oh and for number 5. Cost is important, not the most important item but lower costs makes it all more achievable. Luckily this is where Rob's approach works very well, making it all light and stiff can be cost effective. Which help achieve the top 4 goals."
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Posted by: Luca Antara <luca.antara@gmail.com>
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