Apr 6, 2012 · I've forgotten all the details, but recollect being told by experts that for boats of anything but extreme performance, the NACA 00xx series are within a hair of optimal. For …

Mar 3, 2013 · It would be interesting to see if some organization, perhaps a university, could develop some optimized foil shapes specific to sailboat keel design, standardized for use …

Mar 23, 2017 · Every type of boat, from dinghy, to cat to keelboat right through to hydrofoil boats perform better with accurate foils. This may not matter to the cruisers (bless their cotton …

Aug 31, 2017 · So, I'm considering building a simple rudder for a small boat and have a few questions, never having done this --and also not being familiar with NACA (beyond the basics, …

Many sail boats have foils based on NACA 4 digit airfoil design, which was defined in 1933 and based on a lot of trial and error by many people in the early years of aviation. Because it was …

Mar 12, 2004 · NACA profiles just refer to a system for cataloging airfoils. If you use any old NACA profile you could end up with a lot of leeway on one tack and negative leeway on the …

Oct 2, 2023 · My boat (Morgan 382) has an encapsulated keel and a NACA foil shape. Listed on the Drawing as NACA 64(sub1)-A012 Streamline. sub1 is a subscript "1", I don't see how to …

Mar 26, 2010 · I have used foil sections for sailboat keels and rudders from 10% to 21%. Rudders often operate at high angles of attack, and you don't want them stalling out at such high …

An excellent choice for most craft, is a realistically accurate and fair NACA (National Advisory Committee for Aeronautics) 0012 airfoil, where maximum board thickness is 12% of the …

Aug 24, 2010 · So, as a good-faith effort to help out my fellow sailors and make our Mac's perform better than other boats out there , I developed a little spreadsheet that will calculate the …