Frank Carius 50 FT. KETCH

In the thread Motor Sailers ? there's some talk about mules, the below picture comes from post #213...

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Here's a good view on Good Fortune ↓ flying a mule, on the next picture she's flies her mule without the actual mizzen sail aloft...

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Below Stuart at work, in Sail Magazine march 1980 he shows and explains a "half wishbone mule", but since a "half wishbone" isn't a wishbone I would rather call it a "sprit mule", an informative article however . .

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On Bill's ---> Fuji Yachts Owners Website and their forums some mule threads ---> Mule Sail ---> Next... Mule Sail

Yacht Valhalla - - (only the first below picture)​

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‘‘ first cut layout ’’​

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Oh, about that book, not worth looking for it for this matter, below the full text in the whole book about Frank Carius, from page 136, it's only a reference to another book with some of Frank's ferro-cement boat designs...

I've some doubts about the last part, so here's a screenshot of that to check it out . . .

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‘‘ GUIDE TO FERRO-CEMENT SAIL AND POWER BOATS AND DESIGN by William H. Roberts combines details of how to build ferro-cement boats with a number of designs for boats in ferro-cement including sail, power, and motor sailers by Ian Ross, Stan Huntingford, and Frank Carius. Plans for 33 boats are shown. Nearly 160 plans, diagrams, and photos. 110 pages; 11" by 5½". Paperbound. (1970) $10,00. ’’

So for info better look for the mentioned book by William H. Roberts with some of Frank Carius' ferro-cement boat designs.

Maybe forum member Tad ^{(web 1 - web 2 - blog)} has a copy of the book, he could be even related to the author.

 

Can anyone supply picture of the mule boom/wishbone/sprit?

 

Hi Chris, I've just numbered the pictures in my pre previous post (which is post #16).

The sprit (aka half wishbone) mule sail can be seen in pic #5 there, see the linked article for the explanation.

Below the same picture (#5) in a blown up version, the ± horizontal sprit is on the other side of the mule, the sprit ends can be seen on both sides stabbing from behind the mule, one end of the sprit is ± pointing towards the mizzen mast top, the other sprit end can been seen stabbing from behind the long side of the mule, about in the middle of it.



The same can be done by a full wishbone, but a single sprit (aka half wishbone) is sufficient to do the job, and is because of its simplicity, and the lower weight aloft, for me preferred here above a full wishbone, which of course would have been fully visible on both sides of the mule.

 

Is there an out haul on the mule boom or is it part of the sheet? Can you adjust the out haul once it's a loft? Sorry to ask so many questions but this will most likely be the next sail in my inventory and I just want to know as much as possible before I make a boom and sail.

 

In the below B & B Yacht Designs Cat Ketch pictures the boom/spirit of the main sail is visible, the boom/spirit of the mizzen sail is at the back side of the sail for the viewer, so it can be hardly seen, just like the sprit (aka half wishbone) of the mule in my previous post.

↓ Core Sound 17' Cat Ketch​

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↓ Core Sound 15' Cat Ketch - (2x)​

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↓ Core Sound 17' Mark 3 Cat Ketch sail plan, with optional mizzen stay sail and spinnaker.​

Cat Ketch article​

Note all boats in this post have standard unstayed masts.

 

Sorry, but I can't explain it better than in the linked article, if there are nevertheless questions about it, then best give Stuart a call, or send him a mail, see the bottom of the page for the contact info, he'll be happy to make the sail for you . .

Here's the other side of that mule and her sprit (aka half wishbone), it's a curved sprit, so it's indeed a kinda half wishbone.

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P.S. - If you contact Stuart, please keep us posted here about the outcome . .