Sailors Powerboat

slug zitski

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woodruffkey said:
The guy in the striped shirt looks sort of familiar. 1970's Porn Star? 

Professionally engineered structure for minimum weight / maximum strength - then add lead and water. WTF


woodruffkey said:
The guy in the striped shirt looks sort of familiar. 1970's Porn Star? 

Professionally engineered structure for minimum weight / maximum strength - then add lead and water. WTF
When the boat is not moving you need to sink it to make it stable.  At speed it is lightweight .

wylieskiff_brochure.pdf


 

nige

Super Anarchist
Nige,

If I were to get an old NACRA 5.8 and stretch it, or use old Seawind 24 hulls and put a pod on it as a poor mans emulation of your cat. What rough order of magnitude decrease in efficiency would I get against your optimised hulls?
Well Russel is the source of truth for that config (I think his Skeeter with tornado hills was posted earlier in the thread)

that at would be a cool but different boat - a couple of things - you need to get the pod above and away from the water and the sterns don’t have the volume to support outboards so you need to have a single outboard in the center and likely significantly forward of the stern etc.

someone can correct me but I think Russel’s skeeter cruises at 17kts with a 15hp engine at great efficiency....

 
Nige,

If I were to get an old NACRA 5.8 and stretch it, or use old Seawind 24 hulls and put a pod on it as a poor mans emulation of your cat. What rough order of magnitude decrease in efficiency would I get against your optimised hulls?
Hi Nacrajon,

Nige's powercat "Totoro" was inspired by a ride on Russell Brown's "Grasshopper"-- Tornado hulls with a 15 hp motor that can go 17 knots and cruise efficiently at 14 knots. I had been driving a couple small commercial powerboats that summer in the San Juans and Russell's boat really opened up my eyes to the potentials of displacement power cats.  Hopefully he can post a picture of that cool boat.  My guess would be that the Nacra would do really well if you could keep it light and keep the speed bellow 16 knots.  The Seawind could be nicely efficient up to 12-14 knots or so.  Just a squint my eyes and pull a number out of my butt kind of guess.  I'm basing this on the length to beam ratio of the hulls and the sailing hull shapes that return to waterline at the transom.  But they would be more efficient at those mid range speeds than Totoro -- which is set up to push past 20 knots.

Brandon

 

Mike in CT

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I have always been partial to straight inboard center consoles. I like the way they look and operate. Great for the kids with the swim platform, and for fishing if you are into that. much better balanced boat than an I/O.  Had a Shamrock 220 for a while, now have a 24 Rampage. 

DSCN3681.JPG

 

fastyacht

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Russell Brown

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Funny how this thread is titled 'Sailors Powerboat", yet there are lot of powerboat's powerboats being posted here.

looking back 50 to 100 years would show lots of efficient and beautiful powerboats, but now people seem to think that a powerboat should be incredibly ugly and have twin 250's on the back. Is that cool? I don't think so and it's definitely not going to be the way of the future.

The multihull motorboats are super interesting (at least to some of us), but there is a lot going on in the world of efficient monohull motorboats too. It would be great if more of that work was being shown here. I really like Bob Perry's 60' motor yacht concept shown on post 19 of this thread and also the designs that Bieker boats has done are inspiring too. It was getting a ride on Paul's 30' "Rippler" that first turned me on to efficient motorboats. The PT skiff has some pretty amazing qualities and the "Shearwater" seems to do it all with 60 hp. Paul Bieker is about to launch a 20' single outrigger motorboat that was inspired by the 24 footer that I designed. It will eventually be a test platform for a gas/electric powered hydrofoiler, but it will start with the new lightweight Yamaha 25 hp outboard.

 

USA 007

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Lake Lanier, GA
This my sailor's powerboat.  1979 Sisu 22.  Full keel, prop in an aperture, rudder.  Goes anywhere at 10 knots, easy to beach, kind of thirsty though with a modded out Mopar Slant-Six.  Install the side panels and kerosene heater for winter cruising

Stogie-1.jpg

Stogie-2.jpg

Stogie-3.jpg

 

slug zitski

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Funny how this thread is titled 'Sailors Powerboat", yet there are lot of powerboat's powerboats being posted here.

looking back 50 to 100 years would show lots of efficient and beautiful powerboats, but now people seem to think that a powerboat should be incredibly ugly and have twin 250's on the back. Is that cool? I don't think so and it's definitely not going to be the way of the future.

The multihull motorboats are super interesting (at least to some of us), but there is a lot going on in the world of efficient monohull motorboats too. It would be great if more of that work was being shown here. I really like Bob Perry's 60' motor yacht concept shown on post 19 of this thread and also the designs that Bieker boats has done are inspiring too. It was getting a ride on Paul's 30' "Rippler" that first turned me on to efficient motorboats. The PT skiff has some pretty amazing qualities and the "Shearwater" seems to do it all with 60 hp. Paul Bieker is about to launch a 20' single outrigger motorboat that was inspired by the 24 footer that I designed. It will eventually be a test platform for a gas/electric powered hydrofoiler, but it will start with the new lightweight Yamaha 25 hp outboard.
Motor boats are spontanous and can cover large distances.

this is why they are popular 

as for power...the more junk in the trunk, the more power

i wouldnt be able to guess what the best power to weight ,to interior volume ,to  distance, to sea state. ratio is 

but its more than you think. 

 

ProaSailor

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Paul Bieker is about to launch a 20' single outrigger motorboat that was inspired by the 24 footer that I designed. It will eventually be a test platform for a gas/electric powered hydrofoiler, but it will start with the new lightweight Yamaha 25 hp outboard.
This one?  outrigger.jpg

From 1 min. 21 sec. to 3 min. 24 sec. in this video:




 

Russell Brown

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Motor boats are spontanous and can cover large distances.

this is why they are popular 

as for power...the more junk in the trunk, the more power

i wouldnt be able to guess what the best power to weight ,to interior volume ,to  distance, to sea state. ratio is 

but its more than you think. 
Mister Zitski, What you think is obviously different than what I think, but I wonder if you have ever experienced a fuel-efficient or multihull powerboat.

I think that a new thread titled "Fuel efficient powerboats" is in order. I'm sure it would still attract posters with nothing good to say, but it might narrow the field a bit.

 

Mike in CT

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Funny how this thread is titled 'Sailors Powerboat", yet there are lot of powerboat's powerboats being posted here.

looking back 50 to 100 years would show lots of efficient and beautiful powerboats, but now people seem to think that a powerboat should be incredibly ugly and have twin 250's on the back. Is that cool? I don't think so and it's definitely not going to be the way of the future.

The multihull motorboats are super interesting (at least to some of us), but there is a lot going on in the world of efficient monohull motorboats too. It would be great if more of that work was being shown here. I really like Bob Perry's 60' motor yacht concept shown on post 19 of this thread and also the designs that Bieker boats has done are inspiring too. It was getting a ride on Paul's 30' "Rippler" that first turned me on to efficient motorboats. The PT skiff has some pretty amazing qualities and the "Shearwater" seems to do it all with 60 hp. Paul Bieker is about to launch a 20' single outrigger motorboat that was inspired by the 24 footer that I designed. It will eventually be a test platform for a gas/electric powered hydrofoiler, but it will start with the new lightweight Yamaha 25 hp outboard.
I feel like you really need go with what works best for your given situation. If you have the means to get a sail boat and a power boat, that's great. It gives you the opportunity to go boating they way you want, when you want. I agree with you on the trend toward multiple outboards. I find the one big block 454 easier to work on. 

Now I just need to move somewhere warm so I can used them more often instead of storing them half the year. 

IMG_2897.JPG

 

slug zitski

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Mister Zitski, What you think is obviously different than what I think, but I wonder if you have ever experienced a fuel-efficient or multihull powerboat.

I think that a new thread titled "Fuel efficient powerboats" is in order. I'm sure it would still attract posters with nothing good to say, but it might narrow the field a bit.
I see how the boats are used

locally the attraction...a beautiful sandy beach island is 20 miles away...40 miles round trip.  Open water

the boat needs... seating  for four, sun beds, bimini, a simple lunch galley, cold drinks  enclosed head, swim platform , a good anchor system and if possible a rubber dingy so that you can go ashore without swimming there.

this means substantial interior volume..beam...plus  a seaworth hull form that doest get everyone wet 

boats are 30 ft...powerful. 

You might think I have nothing to say , but I can assure you I have been in the marine industry for more than forty years...all over the world.

 

fastyacht

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Yes to both of you but Russell has a point.

As a sailor, I appreciate different powerboats for different reasons. Some are slow. Some are fast. Some are efficient. Some not.
"Sailor's powerboat" isn't a category. More an emotional or aspirational statement.

 

slug zitski

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No..i have done one hell of a lot of sailing ...i very seldom use a powerboat..i am on a sailboat now.

a big defect of the lightweights...like the speedy cat shown ...is its bow.

the bow of the boat has a function..people use it.

 It is very common in areas with limited dock space to motor into the dock , bow first , and let the crew off.

Very often you must creep in , bow first , upto a beach to get your crew ashore 

when you moor a boat in a port,  it is typically stern too the dock...outboard skiffs  dont like stern too, the tilted outboard is in the way, so they go bow to the dock when moored. Crew must board bow too

Not many folks are lucky enough to have an alongside the floating pontoon berth 

the bow of a boats purpose  in life is seakeeping...it slices thru a wave , then deflects the spray ...a boat with no flare will be wet 

 
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Ishmael

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No..i have done one hell of a lot of sailing ...i very seldom use a powerboat..i am on a sailboat now.

a big defect of the lightweights...like the speedy cat shown ...is its bow.

the bow of the boat has a function..people use it.

 It is very common in areas with limited dock space to motor into the dock , bow first , and let the crew off.

Very often you must creep in , bow first , upto a beach to get your crew ashore 

when you moor a boat in a port,  it is typically stern too the dock...outboard skiffs  dont like stern too, the tilted outboard is in the way, so they go bow to the dock when moored. Crew must board bow too

Not many folks are lucky enough to have an alongside the floating pontoon berth 

the bow of a boats purpose  in life is seakeeping...it slices thru a wave , then deflects the spray ...a boat with no flare will be wet 
Well, if nothing else, you have spent 40 years perfecting your own view of things.

 

nige

Super Anarchist
I think where I struggle with your response is that you are describing a huge section of power boats that are already out there.   This thread wasn't started to just list the standard power boats that already exist, so although "sailors power boat" is not defined, I assumed it meant something other than the norm.

You are also stating personal choices as facts.   Things aren't that black and white, each design feature has a pro and a con that may or may not be countered by other design choices.     Most end up being valid for their use, you seem very clear on the predominant use in your area and it sounds like you have the right boats in mind but obviously there are lots of different uses.   Some things you described are totally valid and would be listed in the "con" column when making a decision, some issues you are incorrectly projecting and are not the issue you assume them to be, some issues seem to be local to you.

It would be dull if there was one perfect boat....

 
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