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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Misty Moonbeam

Misty Moonbeam a unique yacht which was designed and built by the late Michael Corbin.

For many years Misty Moonbeam was a familiar sight on the Medina River in Cowes.

A previous owner writes "If you would like to see more of the interior of Misty Moonbeam - heres the link to an Album created April 2010 - which can be viewed page by page without purchase. This was where she was berthed under her new ownership from 2007 to 2010 Chivenor, near Barnstable at the time. It was a pity the tide was out - but you cant have everything, it was a beautiful day. I was fortunate enough to be invited to spend a day on board, with a photographer friend who created the Album. Thats me on board in red"

"Misty Moonbeam was sold in 2007 and indeed has been recently sold on again. I would also refer you to a YACHT MARKET site, where Misty was advertised prior to the latter sale. This gives all her statistics and will give you a true figure of the amount of winches on board. This site will be undoubtedly removed soon as she is under new ownership as at October 2010."

"If you remember, she was originally a Wishbone Schooner - but the first buyer didnt know how to make use of the wishbone, whereby it was removed, re-rigged with a complete new set of sails."

"Here is the one and only picture of Misty Moonbeam under sail in the beauty of her original rig for which Mike had designed her It is not easy to get a photo of your own boat under sail - unless you are racing and surrounded by press photographers. Fortunately I alerted some friends she was in the West Country, and the rest is history. Thats Mike on the raised poop - with daughter and son-in-law on deck."



"May Misty Moonbeam continue to sail the seas. She was designed for world cruising and may she be admired the world over and live on in the memories of all who appreciate her individual beauty."

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Voice recognition software

I am writing this short post in order to test the voice recognition software embedded in Windows 7. It is my hope that I can write posts more frequently in this way and also answer my backlog of emails.

My primary work is boatbuilding and design and I am finding it difficult to keep up with the administrative work which articles, emails, and the blog entail.

At the moment I am teaching the software how to recognise my Australian accent, and it seems to be having great difficulty!

There will soon be posts about a Water Rat being built from 4 mm plywood which is coming along very nicely indeed, and I will be posting some photographs of the Scram Pram which is almost completed. The windows are in and we hope to have the boat in the water within a few weeks for trials.

The voice recognition software seems to be working, but please be tolerant of my mistakes!

Ross Trinders beautifully built 4mm Water Rat

Scram Pram with her windows dry-fitted, and the decks screwed down on bedding compound

Now, doing all of that with voice-recognition software was VERY time consuming, but stand-by for an improved service!

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This blog is being moved

This blog is being transferred to my own website. All the posts have already been copied over ...

http://www.storerboatplans.com/wp

There is a good search function on the top right of that page.

For discussion, podcasts and more on boat design, boat plans, boat building, boat repair, plywood, epoxy, amateur built boats, sailing boats, canoes, kayaks, rowboats, yachts and more.

Best wishes
Michael

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First Mate Side Seat Rails

At the end of June 2011, I published a post about my idea for moveable side seating in cruising dinghies. The idea is that side seats can be used if prefered (although I like to sit down low in the boat with my weight near the windward turn of bilge) and can also be removed at a moments notice. Most importantly, if they are slid into the centre of the boat they make an excellent sleeping platform, well above the bilge water.

The Phoenix III built by Paul Hernes, showing the side seats in the standard location.............. 

...........and slid together to form a nice sleeping platform............

.....or removed altogether.

You can find my original post at this address

I am continuing to work intermittently on a First Mate in my workshop - she gets attention when glue is curing on other jobs. Last week I installed the rails to carry the removable side-seats/sleeping platform, and Im delighted to say that in First Mate, the seats are more than 26 inches wide at the upper part of the body when slid together. Here are a few pictures of the rails: -

Here is the seat rail glued and screwed onto the aft face of the midships frame. This frame is made from 12mm (1/2") marine plywood, with 38mm x 12mm (1-1/2" x 1/2") behind where the screws go through. The whole thing is very strong, and the seat rail would be fine with just a glue joint. However, the silicon bronze screws make it simple to position when the epoxy is slippery, so they may as well go in! The rails are positioned to carry a side seat which is 31mm (1-1/4") deep - these will most likely be 25mm (1") framing topped with 6mm (1/4") marine plywood.

A close-up of the aft rail, which attaches to the semi-bulkhead at the forward end of the stern seat (i.e. the "stern sheets"). The centre cut-away is just to allow positioning of the screw-in hatch to that particular buoyancy compartment.

Another shot of the aft seat rail with the rowing foot-braces on the floor below. These foot braces do double-duty as structural stiffening elements as well

This seating arrangement will make First Mate (and Phoenix III) very versatile cruising dinghies - my favourite type of boat bar none!

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Answers to a couple of recent comments

Here is comment received regarding Fleet:-

How much does she weigh?
What I like about flint is that the center of balance is over the center thwart making her easy to carry and light enough for this senior citizen to car top.

Well, I cant tell you how much she weighs because we havent weighed her yet, but the material thickness is the same as on Flint and the area of plywood is only 8.4% higher, indicating an 8.4% weight increase.  The Fleet shown in the pictures has a foredeck and inwales, but the standard Flint and Fleet have tank-tops on the foreward and aft buoyancy tanks, so it probably all evens out.

Based on just the plywood in the bare hull, the weight of Flint panels is 24kg(53lbs) and in Fleet the same is 26kg(57lbs). The centre-of-gravity of the hull panels (including transom without framing) is at 1.96metres forward of the aft perpendicular i.e. at the midships thwart near the aft edge.

The weight of any boat depends tremendously on the density of the materials used, and the attitude of the builder.

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In relation to my recent post on the virtues of the sprit rig with the jib set flying, Dennis Marshall writes: -

May I ask what the line is hanging from the peak of the sail?

Dennis is asking about the light line which can be seen in a number of photos, running down from the head of the sail at the peak end of the sprit

The light line is just visible in this photo

The line is a vang. I suggested that it be used in certain conditions when hard on the wind and when running free, to control the amount of twist in the sail, and (when running) to prevent the head of the sail from moving forward of the beam i.e. forward of a a line drawn at right angles to the centreline of the boat. If a sail moves forward of the beam, it is a sure invitation to a Death Roll.

The light line is run from the head of the sail near the peak of the sprit down to a thumb-cleat on the weather quarter and then to a little fairlead on the rudder head and then along the tiller to a small V-jamb cleat within easy reach of the helmsperson. When tacking or jibing, the line is flicked off the thumb-cleat and quickly moved to the one on the new weather quarter.  It only requires a light tension on the line (vang) to haul the head of the sail in to reduce twist in the sail.

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Love Love by Julien Berthier

French artist Julien Berthier created this boat. According to him, "Love love is the permanent and mobile image of a wrecked ship that has become a functional and safe leisure object".

Im not sure the Health and Safety Executive would agree with him about the last part.

Heres what the gallery that displayed it said.

"For this piece he adapted an abandoned 6.5 meter yacht so that it appears to be perpetually sinking. To create this, the vessel was split and a new keel was constructed allowing it to be sailed by Berthier at a 45 degree angle off the coast of Normandy. Love-Love, like much of his oeuvre, is impressive, poetic and humorous.

In this project, the artist invests his energies and resources into creating an art of fiasco, aiming in his words to “fix an object at the moment of its deregulation.” The image, and metaphor of the sinking ship is an iconic one – it signifies death, lost hope and sinking dreams. Berthier’s Love-Love freezes those sentiments permanently both celebrating and overturning them. On display in the gallery will be the boat itself as well as a series of accompanying photographs and documentary video showing the performance in Normandy."

Mr Berthier knows something most of us dont, though - how to make money out of old boats. He is reported to have sold this one for £50,000.

Love Love from julien berthier on Vimeo.

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