ITA 14.99

[catmancan2]

Originally Posted by iliohale

Assume an average hull width of 4’ bow to stern. Likely conservative assumption based on eyeballing the hull shape and the topside flare

49ft long x 4ft wide = 196 sq ft
1cm = 0.03281 ft
196 sq ft x 0.03281 = 6.43 cu ft per cm of hull depth
6.43 x 2 hulls = 12.86 cu ft per cm of hull depth
12.86 x 62.43 lbs per cu ft = 803 lbs or 364 kg per cm of hull depth

Back of envelop math = 364 kg per cm of hull depth which is in the ball park of the 480 kg cited by ITA. Based on the actual hull shape it is reasonable that the 480 kg per cm is correct. Let’s see what the designer comes back with.

Gary

Just back from the ITA boatyard and made a point to bring up the hull immersion (again). The correct immersion rate is 360 kg/cm.

[Catmandu]

360 kg/cm is more believable and still pretty respectable ... thanks for chasing this down catamancan2!

As I said earlier in this thread, its been my experience, that the numbers builders publish are not always correct nor do they reflect reality. Its most useful to see how any boat sits on her lines and sails when loaded up for cruising.

I mean who leaves the dock without the tender, empty water tanks, empty frig/freezer, empty lockers, empty closets and near empty fuel tanks with say just 8 PFD's on board?

Seriously???

Its not uncommon to see performance cats evolve to "new" models that are stretched at the transoms (example: Outremer 49, gunboat 55). Once people go out and actually use them builders extend the transoms to better cope with the loads that customers put on the boats to get some of the performance back.

[Catmandu]

Best test in IMHO for a performance cat is to see how she sails in light winds loaded up for a cruise. If the ITA can approach windspeed in 10 kts of true wind on flat seas with full tanks, the tender and 5-8 people on board then I am impressed.

[Factor]

Originally Posted by Bean Counter

The through hull on the Helia was above the water line. Below waterline is solid glass. Does the ITA have solid glass below the waterline?, it seems not from the commentary. This could mean even a modest grounding/ anchor chain mishap, etc could open the core to seawater?

Not a comment on any manufacturer, but I don't understand why people think "solid" GRP is better than a sandwich construction. Even if it was I would be far more interested in the Glass and the Resins that are used.

[a64pilot]

Originally Posted by Factor

Not a comment on any manufacturer, but I don't understand why people think "solid" GRP is better than a sandwich construction. Even if it was I would be far more interested in the Glass and the Resins that are used.

He explained why very well. Any puncture in the skin waterlogs the “sandwich”

[smj]

Originally Posted by a64pilot

He explained why very well. Any puncture in the skin waterlogs the “sandwich”

Sure about that?


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[BigBeakie]

Factor, agree completely. It is massively heavier, not as stiff, and risks exotherm "cooking" of the resin which makes it brittle and prone to cracking. And it is no easier to repair if it is holed compared to composite foam core boat.

But for charter designs, it is more tolerant of charter users running aground, I guess.


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[Factor]

Originally Posted by a64pilot

He explained why very well. Any puncture in the skin waterlogs the “sandwich”

Wrong

[BigBeakie]

Its wrong for foam cored boats , but not wrong for blotting paper, err I mean balsa cored boats. 😉


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[Bean Counter]

If they are so performance based why do all Outremers have solid glass bottoms? (Per their product brochures - under the heading "Safety")

[44'cruisingcat]

Originally Posted by BigBeakie

Its wrong for foam cored boats , but not wrong for blotting paper, err I mean balsa cored boats. 😉


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So, next time you see Tony Longhurst, are you going to tell him you think his boat is made of blotting paper?

[BigBeakie]

Tony actually OWNS the best boatyard , IMO, in Australia, The Boat Works, as you well know. So if he ever needs some re-coring work done on Kato after a grounding that gets through his laminate, I think he'll be good.

Also, there was a wink after that cheeky comment, you'll notice.


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[44'cruisingcat]

Didn't think you would.

[Naughty Cat]

I noticed this ITA in my home port of Loano last week. Presumably Hull1?

It's a beautiful looking cat. The bow makes a statement as does the hull colour. She looks powerful. I was struck by the high hull freeboard - about the same as an Open 46. The helm station was either unfinished or removed, with just a couple of carbon posts. The helm visibility is great - I much prefer that to the Catana 53/open 46 position - especially for mooring. The winches are not to hand and it's a bit of a trek side to side. I would prefer a little more protection at the stern if coming down in a swell - tripping is all too easy.

No one around to ask about price. I would jump at the chance to test sale her.

http://www.cruisersforum.com/forums/...1&d=1540299283

[Catmandu]

It looks like a very well designed and executed boat! I believe the price is $1.1M+ range.