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post #11 of 35 Old 07-11-2019
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Re: Catamaran flipped two die

Cruisers Forum: Spirited 380
Quote:
Hi we owned a Spirit 380 for a couple of weeks before it flipped of Kangaroo Island. We were in the water for about 6 hours before being winched off. The boat was ashore 4 months later about 600NM away.
News Video - Yahoo!7 News


Here is a link to the Building of our boat by the original owner

It took this builder 2 and half years to build full time with two people working on about 6500hours

Building the Cat

The boat sailed along well but anything over 10 + knots it just did not seem to sit well in the water was very light in the water.

The design is very roomy inside and has quite a good layout

We did contact the designer after the incident but did not have any joy there.

We now have a new yacht built by Robert Chamberlin it is another Cat 11.6metres in length. This yacht in my opinion is a better boat. It sits on 10 knts all day and sticks to the water like Glue. The bigger brother of this boat just broke the Australian record for sailing around Australia see link

Bruce Arms

Hope this helps a little

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post #12 of 35 Old 07-11-2019
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Re: Catamaran flipped two die

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David Biggar recorded 15-knot cruising, with one spurt of 22, in 18 knots of breeze.
https://www.yachtandboat.com/spirite...-yacht-review/


So.... In 30 knots???

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post #13 of 35 Old 07-11-2019
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Re: Catamaran flipped two die

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Originally Posted by SanderO View Post
Without a keel they don't have much righting moment...
They have a huge low angle righting moment several times that of a monohull, becoming equal to that of monohull at ~50* heel, then decreasing to no righting moment at ~90*.

The overall rotational energy (area under the stability curves) required to capsize a catamaran is ~50% greater than that required to capsize a monohull.

So catamarans have large righting moment, are harder than a monohull to capsize, but will not recover from a capsize, where a monohull has some non-zero chance of recovery (but less than 100% chance).

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Re: Catamaran flipped two die

Here's another thread about a lost Spirited 380. Given the small number made, it seems like an awfully high number have run into problems. I wonder if it's the boat, or the conditions that people sail them in?

Cruisers Forum: Spirited 380 Lost in the Coral Sea
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post #15 of 35 Old 07-11-2019
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Re: Catamaran flipped two die

3 in 10 years?



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post #16 of 35 Old 07-11-2019
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Re: Catamaran flipped two die

Capsize is one concern pitchpoling is the other. Just like monos there are boats better suited for heavy seas and air and those best considered coastal. . Would have no problems jumping on a Rapido 60 for rtw. It would be quick.
As stated above 6’ seas shouldn’t capsize any ocean boat be it mono or multi. Although there maybe a component of operator error ( no mention if they were reefed and to what degree).

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post #17 of 35 Old 07-11-2019
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Re: Catamaran flipped two die

There are almost no recorded incidents of ocean sailing, non-racing catamarans pitchpoling. It just isn't a real concern in a cruising catamaran. Chances are pretty much zero in any conditions compared to capsize.

And there is no practical difference between a pitchpole and a capsize - in both instances the boat is overturned and is not coming right side up again.

The Rapido 60 is not a catamaran.

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post #18 of 35 Old 07-12-2019
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Re: Catamaran flipped two die

Just wild thoughts here...

I'm not cat sailor but I've taken Hobies out a few times and managed to dig a hull in and flip the boat at full speed, butt over bow. The occasion I remember I was thrown 20 feet forward. Well clear of the hull, mast and sail. That's a long way!

Other times I learned to dump the main whilst the bow was digging in.

The boat in question with a full 30 knots (plus gusts? But those westerlies are quite stable) on a beam reach, would be going FAST. The owners were 78 years old. The son in his 50s but wasn't the owner so I wonder his sailing skills and the young teen.
The swell was Easterly.
The rudder underpowered.
A go fast cat doing 15 knots or more.
The sails fully powered (?)
Mainsheet loaded.
The boat - sailing flat even - digs the Lee bow into a 6 foot wave.... How does a 78 year old dump the main before it flips?


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Last edited by MarkofSeaLife; 07-12-2019 at 02:43 AM.
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post #19 of 35 Old 07-12-2019
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Re: Catamaran flipped two die

I'm loving on all the sailors who have never sailed more than beach cats comparing them to cruising cats...
to put it in perspective its like comparing a laser to a J-35.

Come on folks. For a cruising cat a 38 footer is SMALL. Its still a 20,000lb boat its no beach cat. Much like attempting to attack the sea in a Catalina 30, it can do it, but its not exactly a bluewater mono.

30 knots is NOTHING for a cruising cat. 8 foot seas are nothing. However, step periods and confused seas can turn any boat into a pile of sticks as any great lakes sailor!

This is a tragedy, and likely happened due to quickly deteriorating conditions. Respect for those who lost lives. Sounds like captain knew things were getting snotty, and had crew properly suit up (life vests), and managed to activate EPIRB.

The whole catamaran versus mono debate is tired at best. It is true that once capsized you are toast in a cat, but its also true that they are much harder to flip, thanks colemj for putting some logic into the argument.
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post #20 of 35 Old 07-12-2019
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Re: Catamaran flipped two die

Quote:
Originally Posted by SailingUphill View Post
For a cruising cat a 38 footer is SMALL. Its still a 20,000lb boat its no beach cat.
If you go follow the links you'll find it's not anywhere near 20,000 pound. But 10,000. 5 tons.
That's more like a beach cat than a Lagoon 440.


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