Calendar Islands Yawl Modeling Continued

Fleshing out the Calendar Islands Yawl

Modeling the Interior

While I am actually breaking out the geometry of the final 3D computer model, the interior of the "in-the-flesh" model was glued in yesterday and Ill prime it today.

Cutting out quarter scale bulkheads for Calendar Islands Yawl interior.

It never ceases to amaze me how everything just fits. Paper patterns are Spray77 tacked to 1/8" plywood and cut to the line on the bandsaw. Then the parts are glued into place with little to no refinement and they fit well. It makes this method of proving out the hull design quite efficient.

After hull turnover in actual full-size construction, this is what the boat interior will look like.

The beauty of kit construction, is that we set up stem, bulkheads, and transom on a CNC cut, self-jigging strongback. And after planking, we turn over the hull and the interior structure is already complete. In traditional construction, the molds would be removed and bulkheads fit in their place. Kit construction allows the professional and home-builder to skip the time consuming steps of making patterns and scribing in bulkheads.

After turn over, the tank tops are put in place. They play an important structural role in stiffening this very light boat.

Stay up to date with me as next Ill prime the hull and make paint choices. Furthermore, the cutting files will be ready for CNC cutting of the first kit. 

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Calendar Islands Yawl Update

The CIY is becoming Reality

A father son team builds CIY #1 in Duluth, MN.

The last update had me quarter scale modeling the CIY hull. That work has completed and Ive even put some paint on the model so it looks presentable. The model is also a great opportunity to use up left over paint and to test colors. I consider the color scheme -- and lack of varnish I might add -- to be an important part of the overall feel of my boats. I am not settled on the scheme, but still looking for the right brown for gunwales. I like the sand interior. The dark blue is the only boat I have ever used it and it works OK, but I am not in love with it.

My little guy helped me paint the interior of the CIY model. He said the interior color "looks really good, Daddy". So Ill go with that!

CNC Cutting in Maine

The parts for the kit were cut at Hewes & Co in Blue Hill, Maine. They also cut the Vivier boats now and all the Oughtred kits and I am so glad to be doing business with them. Here is their work:

The CNC cut Advantech chipboard supports for bulkheads with some patterns, too.

The CIY planks being CNC cut with the NC Scarf.

While the cutting was going on in Maine, the builders in Duluth were starting the birdsmouth masts and spars. They are great, hard working guys and have built several boats.

CIY Builders fabricating hollow-birdsmouth mast.

The kit arrives in snowy Minnesota. You can see the Advantech strongback components here.

The parts making begins. Here they glue up the NC stem.

My way of giving

In the meantime, in my studio overlooking the Saco River I work on more CAD files for people who want to build my boats. It is the highest honor and I will work hard to make it happen for them. They always give back and make the design better than I could have made it alone. The revised KDI kit is about to be cut again on the West coast, the new Drake 19 is shaping up for a few interested rowers, and the Deblois Street Dory is getting a revision based on the Compass Project build and plans and kits will be sent out this spring. I have views like this to keep me going.

I live in the North Dam Mill there on the left bank if the Saco River. The ice is almost out on the river!

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Calendar Islands Yawl 16 Update

Specs

LOA 15 6"

Beam 5 2"

Anticipated Hull weight 150-200 lbs

Displacement ~520 lbs

Here are some screen shots of the CIY model with lapstrake planking. The garboard is actually stitch-and-glued to the bottom, glassed, then the rest of the planks are plywood lapstrake with no fiberglass required. The bottom exterior is definitely oriented towards a lot of beaching as this is a sail-and-oar dinghy with an emphasis on sailing.

The waterline shows quite a bearing aft which should allow for a good planing when the wind is up and the crew is sitting aft and hiking out.

Now that the hull is complete, I can begin thinking about how to layout the interior structure with CNC cutting and kit building in mind but also so that the boat can be scratch built from just the plans or full size patterns.

Ill also sketch the rig but I bet folks know what the rig will be since its implied in the name. The CIY is named for the over 365 islands that dot Casco Bay. These islands and the sailing around them are the intended waters for this exciting boat.

The plan is to find a willing boat builder out there to build the first hull. I will sell the kit at my cost. Its a great way for someone to get into the boat they want for significantly less than what will be the retail cost.

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Calendar Islands Yawl

The Calendar Islands Yawl (CIY) has been built. Hull #1 was built in Minnesota and is a success. Launched late in the year after only about 6 months of part time building on weekends, the owner is really happy with the project and the boat. See his Google + site for pictures of the build.

CIY hull #1 on sea trials, September 2014.

Now, the work is on my plate. The next steps are to take the information from build #1 and make some revisions to the computer model, draw up plans, and set up the kit for retail sale. I hope to do this early in 2015.

The CIY is a sail-and-oar dinghy designed for single- or double-handling in conditions that can be found on the Maine Coast. We wanted a boat that handled well going to windward in choppy water, easy to roll up a beach on the Maine Islands Trail, and could still go fast. Moreover, when the wind goes, we wanted to enjoy the row back to land, rather than dread the row. The CIY is available with a centerboard or a daggerboard.

Hull #1 under construction: after the turnover, May 7th, only 6 weeks after kit delivery!

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Developing the Calendar Islands Yawl Daysailer

Be part of the Calendar Islands Yawl project this winter

Calendar Islands Yawl daysailer

New design

the brief:

      Hull above will be modified to create more of a daysailer hull form with ample freeboard and some deadrise for choppy water. Narrow flat bottom will be retained for beaching.

·         Capacity will be up to 4 people maybe 5

·         Loa ~18’8” x ~6’6’

·         Weight estimate ~200lbs

·         Plywood stitch and glue bottom and lapstrake topsides 9mm ply

·         Large foredeck with coaming and high bow make it a dry boat

·         Lug-awl rig or gunter-sloop configurations w/ centerboard

·         Auxiliary power by oars or small OB motor

·         Interior layout with side benching and a thwart across to stabilize cb trunk and provide a spot to row from

·         Motor well aft, 2.5-4hp

·         Side benches aft and forward compartment provide positive flotation

      The idea is to find an interested group of people to help fund this work. If you are interested in having a fantastic daysailer that you can have an influence in the design, please email me at boatkits@gmail.com

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