Motor performance for PS 22

[laci]

Hi,

I am novice,looking for building low powered boat which will be garaged on trailer.I found some options but when I looked on site of PS 22 I thought if she can be powered with more hp to reach speed as OB 20 has, I can get a boat with excellent sailing and motoring performance.Clever me.

I have already wrote about these ,but on existing topic "How about a P 22" (24.Jan. 2013.) and get kindly reply only from Hilironde.

I am asking designer,via forum if it is correct,and forum again for next informations.

Which can be maximum motor power and speed for PS 22 and 2-3 person on her.Minimum will be about 15 knots (calm condition).

Is it possible to shorten tabernacles,or make them (in upper part) removable. 

If not,looking to OB 20 which is too high is it possible to make pilot house removable.

Which boat is easier to built.

My wife and me need a boat for visiting beaches near our summer house on north Adriatic sea and after whole day went back quickly if necessary.

Best regards,Ladislav from Croatia

[Peter HK]

Hi

The P22 isn't designed to plane like a powerboat. It will have a fair amount of rocker and be happiest up to hull speed, any more and the bow rises and lots of power is needed to push it faster. If you want to go at 15 knots an OB 20 would be better. The P22 is only designed for a small auxiliary outboard, say 5HP.

Unfortunately you can't have the best of both worlds...sailboats don't power fast and power boats don't sail fast. The Mac 26 is a case in point.

I imagine the OB20 could have a removable pilot house (perhaps just a bimini?)

My 2 c worth

Peter HK

[laci]

Hi,

I've read on some topic about trying sail boats to reach semi displacement speed with stronger ob (Hartley 18) but didn't find was it successfuly done.

Currently, I have very fast WA powerboat and cruise with her on 25-30 knots.Problem is that my wife like cruising about 18-20 knots,the boat cannot go in our garage and my cruising cost me 6.5 gal of fuel per hour.We decided to sell a boat and not by a new one, but build her.I thought it could be a garaged motor trailer sailer( all in one ). Is it too much, i don't know,so I need more information.

Ladislav

[PAR]

There are some designs that can motor in the high teens, yet still sail reasonable well. You may want to look into the Seabright skiff and box keel designs of Atkins and company.

[Garry]

There are thousands of designs out there. As a novice, DO NOT try to outguess designers that have been at this for years and years. Don't pick a design and try to make it do something it's not designed to do. If the design could do what you wanted, the designer's description would say it.

 

Keep looking until you find a design that does what you want or at least as close to what you want as you can find. The common theme to all boat designs is they are a host of compromises. As said above, you will not likely find a sailboat design that will power cruise at 15-20 knots. Or a power cruiser that will sail worth a darn.

 

It sounds like an Outer Banks 20 with a bimini instead of the hardtop might fit your wishes. Think long and hard about the size of the project though. Construction of an OB 20 would take several years, especially for a novice, unless you can devote full time to it. A CNC kit would cut down the time but it would still be a major project.

 

Another thought - Find a used power boat for now. Build a Spindrift 12 or even a CS 17 or 20 for sailing. If you really like the construction, then tackle an OB 20 later.

[laci]

Thanks PAR and Garry,

I'm doing exactly what you said to me,looking prospects and asking  for more information over forum.It seems that my idea about overpowering PS 22 wasn't good.

Looking to OB 20 Garry,I must believe everything you wrote.Though I am retired now,and I cannot spend whole day for building, two years looks to me quite enough.I was concentrated on S&G method and here I found for side planking Ashcroft method.Does it mean  to use hundred clamps as I saw on some pictures (lot of new tool to by). How much complicated is this, compared with S&G.

Garry, looking to your last thought, with 65 years I have not much time, decision must be done now so that preparation can start this winter.In the meantime I'm just starting to build Gentry's SOF rowboat Whitehall.

Ladislav

[PAR]

It sounds like you need to truly define your needs. On one hand you'd like to sail fast, while on the other, you'd like to power at reasonable speeds too. Unless a custom design, you'll not find a set of plans to address both concerns. There are some cat and tri's that will approach your needs, but I think you still need a solid SOR first.

 

Next would be the build method and time you can invest. Build times can and do vary considerably with skill sets, experience, tools, etc. Some methods are faster, others more novice friendly. Some research into this aspect is in order. Ashcroft isn't one of the novice friendly methods, requiring fairly precise plank fitting. Strip planking is very novice friendly, with a well trained dog capable of laying strips. Neither of these methods would be considered fast, particularly next to a plywood build.

 

One of the hardest parts of a build is selecting the right design and build method.