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Bill H

So you want to build/buy a boat in the PH, here is the place to discuss it!

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Oz Jon

A 36 foot GRP composite Simitar power catamaran, displacement of 6500 kilos and fitted with twin volvo penta turbo diesels, 105hp each has a cruise speed of 24kph ...

 

That's very comparable with my relatively light weight 43ft performance cat.

A professional Crowther design, very seaworthy.

I've sailed it in 40kt winds with 50kt gusts and and in 6m seas.

 

It's cruising weight (fully loaded with 800kg of fuel and water and a lot of tools and building material as freight (maybe more than a ton?) when I sailed up to the Phils, was about 7.5 tons.

It would cruise at about 6kts in <1m seas with about 30HP from a single 4cyl diesel. (nameplate 70HP @ a crazy 6000+RPM)

 

It would do 10-15 kts under sail with that loading. (20kts if I had got rid of all the extra weight)

I was getting 100-200 miles per day under sail, typically 150mls in moderate winds.

These numbers are very different from the numbers mentioned for the "new cheap cat"

 

ps.

It has a massive torsion box integrated into the mast support cross beam/cabin/main-deck leading edge (about .6m wide x 1.2m deep) with 3 fully bonded internal bulkheads.

Edited by Oz Jon

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richard_ost
I just cant see that heavy cat with low power motors coming close to that ...

 

 

With the weight of 6500kg I can't see the boat going that speed with that amount of power either. If it was lighter (what he said it is, 2500kg) it could be done. But I find it hard to build such a light boat with those material choices.

 

EDIT: You can see from the LDR chart I posted earlier how big affect the weight can have, when weight decreases LDR increases, the higher LDR the lower and "stable" (not as steep jumps at certain points) resistance behavior in different speeds. With this boat (these building materials) the realistic LDR would be probably from 5-6.

Edited by richard_ost
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Wanabethere

When I thought I was going to have money at retirement I had grandiose plans to have a motor Banca Catamaran built and my buddy and I would go around the Philippines diving and checking everything out. After the economy took a dump in 2009, now I plan to drive aroud the Philippines. LoL Here are the sketches I did of what I wanted built, remember I am not a boat builder and had no Idea hot to make what I wanted.12799412_10206092642305585_134342784608420602_10206092642185582_5473465070079483

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Wanabethere

Here is the Quote we got from a boat builder in the Philippines.

 

72382_10206092678866499_7573403606193343

12920433_10206092678826498_4083182770084

12809705_10206092678746496_4242209054370

As you can see that was quoted back in 2005, I think the guy was out of Subic Bay.

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Wanabethere

If money was no object (but it is) this is what I would want.

12472412_10206092733107855_2074428683970

or

12933121_10206092733227858_7559241073643

or

12931038_10206092733667869_5451776988659

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Headshot

If money was no object (but it is) this is what I would want.

 

Maybe if you're a good little boy, Santa will bring you one of those...

 

:ROFLMAO: :ROFLMAO: :ROFLMAO:

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Wanabethere

Maybe if you're a good little boy, Santa will bring you one of those...

 

:ROFLMAO: :ROFLMAO: :ROFLMAO:

 

That will never happen, me being a good little boy again. LoL  But there is the Lottery :dreams:

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