The computer people here will roll their eyes, but I've finally discovered that the picture loading problem was caused by incompatibility between the Microsoft Internet Explorer I had been using and the Google Blogger program which I use for the blog. I've now changed to Google Chrome for my internet work, and all seems to be working fine.
So I'm going to start off by answering a few comments that have been left on some of my posts.
Mr.Lillistone,I've followed your blog for a while,Thank you for your time,energy ,and expertise,It is appreciated by many!!! I know you have built both Michalak's Mayfly and Redmond's Bluegill,I'm considering building either one and would like your professional opinion.Do you think the Mayfly leeboard and balanced lug sail plan could be used on the Bluegill ,if the sail is properly positioned over the leeboard,and leeboard is centered on beam?I would like the open cockpit the leeboard affords.Any info. Would be appreciated thanks in advance ! Jerry Fehn on Reality
|The Bluegill we built, showing her centreboard case|
|A raised leeboard on a Dutch Yacht (taken from http://www.leeboards.com/)|
|That is me sailing my Bolger Nymph a long time ago. I had fitted her with leeboard for experimental purposes, but in this photo they are both raised as the boat is running downwind.|
|This shows a typical lowed position for a leeboard.|
Leeboards may appear untidy to some eyes, and to need handling from tack to tack, but they are highly efficient. Frequently the boards are angled away from the hull to allow a clean passage of water between the hull and the board so as to prevent excessive drag. This feature also means that as the boat heels, the board becomes more and more vertical - which is just the opposite of what happens with a centreboard or fixed keel. Not only does the board become more vertical, but it also works from the surface of the water, whereas the centreboard only works from where it exits the bottom of the boat. This has the additional benefit of allowing leeboards to operate effectively in a partially raised position in shallow water, and not extend below the bottom of the boat.
|A Bolger Black Skimmer sailing with her board partially raised. The board is effective, but does not extend any deeper than the hull, if at all. (Photo from Woodenboat Magazine)|
Despite the visual and actual clutter of the boards, they have some potent advantages in addition to the ones already mentioned: -
- the interior of the boat is totally free of the intrusion of a centreboard case; and
- the bottom of the boat is stronger without a centreboard slot; and
- there is no centreboard slot to get jambed up with mud, stones, shell grit and sand - which therefore leads to the centreboard being jambed.
|Above two photos show the Michalak Mayfly 14 pivoting leeboard|
|Here is the finished boat|
|Note the completely unobstructed interior....|
|...the very simple raising and lowering gear...|
|...and the lower guard with the pivot bolt going through (the piece of unpainted wood is positioning piece on the trailer)|
Having said all that, the first person who should be consulted would be Steve Redmond, the designer of Bluegill. As has been said many times in the past, no-one should alter the design of a boat without getting input from the original designer. This is not grandstanding at all - it is simply that the designer should have put a lot of thought into the design, and there may be elements there which are not obvious to the casual observer.
My recommendation would be to build something like Mayfly 14 if sailing is the most important aspect of operation. She sails superbly in my experience, and the shape of the hull is optimised for sailing whereas Bluegill's hull is a deliberate attempt to produce a hull that will row, sail, and operate as a planing powerboat.