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Steel bilge keels and centre stub keel. I was asked about steel bilge keels. The following were taken whilst the boat was on its trailer in difficult circumstances and so please excuse the less than perfect quality. Click on the thumbnails to get the larger picture. Dimensions of the keels: The stub keel is 60 inches long at the bottom and about 2.5 inches thick. The 6 inches at each end taper to an aerodynamic-ish shape. The cast iron part is about 2.5 inches high and the wooden bearer is also about 2.5 inches by 2.5 inches; again faired to adopt the same shape as the cast iron part. It can be seen from the trailer construction that the stub keel is an inch or so lower than the bilge keels. The after ends of the three keels are fairly in line and are about 60 inches forward of the transom. The forward end of the stub keel is therefore about 6 inches ahead of the bilge keels. Experiment showed that the water between the keels was fairly turbulence-free. I therefore sited the transducer for the echo sounder there and to good effect. The bilge keels are made of 1/4 inch mild steel plate. They are fixed with two 1 1/4 by 1 1/4 inch angle. The keel plate is sandwiched between the two pieces of angle with rivets and are then bolted to the hull with a 5/16 pad. The angle is shaped to follow the curve of the hull. I don't know how father achieved this curve but knowing him it would have been without "Cutting and shutting". I suspect the pad is of marine ply. The keels measure about 5 feet 6 inches next to the hull and about 4 feet 2 inches at the lower edge. The 'feet' are of 2 inch strip welded at 90 deg. to the plate. They have done good service but I guess that I will lower all three to inspect bolts before she gets used again. Talking of bolts they are mild steel coach bolts with oak pads on the inside of the hull. Wash boards. When he built Mikros, father made wash boards. He had sailed another Senior whilst he was building and so could change the design as an alternative was suggested by the use of the other boat. Click on the thumbnails to get the larger picture. Sliding hatch. This very difficult to show on a boat with a cover over it! Click on the thumbnails to get the larger picture. Bridge deck for inboard engine. Click on the thumbnails to get
the larger picture.
Thanks for your interest in Mikros. I'm away for a month and so please hang onto further queries for the time being. Geoffrey Hyde Fynn
Page last updated 31st January 2005
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