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January 17, 2009

YRVINDS LATCH MECHANISM

Below part of the aft cabin with the latch system in the aft starboard corner of the hatch. (I only do one corner on the mock up)

Below close up of the latch system.

Below Hatch open, close up of coaming and the green spectra line and its holder. The good thing with this system is that it gives a lot of closing power, its fast and its out of the way with the hatch open. Nothing to snag and chafe. Coastwise cruising one may have to stand a long time in the hatch in heavy weather. Then when tired and weary, one thing one I can do without is a latch digging in to my flesh.




January 16, 2009

THE HATCH & MORE FITTINGS

Today Börje has been here with a load of good things. Here we are trying the toggle of the gooseneck on the mast.

Below the toggle and its pin.

Below the ball and the mastfoot. There is two sets as the forespare also has its ball and mastfoot.

Below is the dead eyes. The mast can be made to tilt to windward. The mechanism for that are dead eyes. Usually dead eyes has three holes. I use two holes and a spectra line. Just before coming about I release the windward shroud and the rig falls over to leeward in a controlled manner. With three holes in the dead eyes I feel there would be unnecessarily much line and friction.

While Börje have been working on the fittings I have been making a mock up of the hatch. Below is the inner coaming.

Below can be seen the gasket around the inner coaming, the flat pieces of the outer coaming, the rope guiding of the hatch with the hatch in its foreward position.

Below the hatch in closed position looking aft. There are two bends in the roof of the deck house. I will only keep the aft as the foreward bend makes the attachment point of the rope to high.




January 8, 2009

MOCK UP OF DECKHOUSE

There are many things to consider when designing a boat bound for Cape Horn with an old skipper who does not like to get wet and cold, but now finally I think I got most things right.

Through the windows in the aft cabin I will have a good view of the surrounding seascape from my comfortable chair.

From the bunk in my bedroom will have a good look at the sail.

There is ample place for ventilators and ducts of my waterproof system so that no water will enter even when the boat is upside down.

I have designed a hatch closing system on the principle of the Highfield lever. There is one latch out of the way below each of four corners of the hatch. From the latches a Spectra rope goes to a hook in the hatch which then can be made to press against a deep EPDM cell rubber gasket to the desired pressure and tightness. The good things with this system is that when the hatch is open there is nothing in the rim which chafes or snags.

Another advantages is that I can, in heavy weather have a modified kayak spray shirt permanently mounted on the hatch rim because the Spectra ropes can come through small waterproof holes is the spray shirt and I can from inside the spray shirt put the loops of the ropes on the hooks. I can therefore get inside the, to the boat attached spray shirt before before I open the hatch. In principle not one drop of water can enter the boat.

The mast is only 75 centimeter 2´6´´ in front of the hatch and therefore easily be reached without going on deck. The spar in the picture is a mock up of the mast.

The hatch is 40 x 45 centimeter a size I used on my first Bris in which I cruised many years. It is a size which suits me well.

I will be able to open the aft window in good weather to get better ventilation. It is closed tightened from the outside by bolts. Also the outside of the aft window is very easily reached from the hatch.
From the hatch I can also reach the water by leaning overboard. This is convenient when washing up and brushing my teeth.

I realize that my description may not be very clear but more pictures will follow as work progress.




January 5, 2009

THE DECK

Below is pictures of how I am putting in temporary frames to bend the deck to the right shape.

Now when the deck is done and I have to figure out the shape of the deckhouse

To be continued…




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