Yar and Earl,

Thanks for your comments and contributions.

Yar, I’ve joined you on the “Best RC Yacht Rally” thread.

Earl, I won’t split hairs with you on the relative beauty of the boats developed under either rule. There are many, many beautiful designs by numerous designers.

My interest isn’t purely or even truly with historical 6M designs. I just find the 6M rule convenient for modeling hulls that interest me. Over the years I have accumulated a number of books and magazine clippings with the lines of various boats that appeal to me – almost exclusively classic ocean racers as I described above. They can easily be scaled (but not all to exactly the same scale) so that the hull fits the parameters of the 6M rule. The beauty of the rule, in spite of the complexities you mentioned, is that it should allow for fairly even racing by adjusting the sail plans allowed to the various hulls. As an example, let’s use four very successful and/or attractive designs by three designers from the US, Phil Rhodes, Olin Stephens, and B.B. Crowninshield and one from the UK, C.A. Nicholson. The designs and their respective dimensions are as follows

Rhodes’ Caper:

LOA – 56.3 ft

LWL – 38 ft

Beam – 12 ft

Draft – 8 ft

Stephens’ Dorade:

LOA – 52 ft

LWL – 37.3 ft

Beam – 10.3 ft

Draft – 8 ft

Crowninshield’s Witchcraft

LOD – 59.5 ft

LWL – 36.6 ft

Beam – 12.9 ft

Draft – 6 ft

Nicholson’s Bloodhound

LOA – 63 ft

LWL – 45 ft

Beam – 12.5 ft

Draft – 9.1 ft

Witchcraft scales nicely at one inch per foot (1/12 scale) to almost exactly the 1500mm (59.1 inches) that is reported as the average/typical length of 6M models. With a modest adjustment in scale the others could be brought up or down to hit that number if desired or required by maximum or minimum requirements in the rule.

Geary’s Pirate, an ‘R’ Boat with which I am sure you are familiar, has the following dimensions.

Geary’s Pirate

LOA – 40.5 ft

LWL – 24 ft

Beam – 8.5 ft

Draft – 5.5 ft

Scaling her up to 59.1 inches yields the model described below. By the way, the scaling factor is 1.46, which is very close to the 1-1/2 inches per foot you referenced above.

Geary’s Pirate Scaled for RC 6M

LOA – 59.1 inches

LWL – 35 inches

Beam – 12.4 inches

Draft – 8 inches

What remains is measuring the hull to determine the sail area.

The primary advantage to this approach is that it allows for a really broad range of designs that can be scaled to a nice sized boat. Granted this can be a great disadvantage as well. The ‘J’ boats don’t share that advantage because there are so few designs and the completed models are quite big (not that a 6M at nearly five feet in length is petite).

After going through the above exercise, I think your idea for racing the 6M and MYRAA R classes together seems like a more easily implemented proposal and one that is well worth exploring. If there proves to be a consistent disparity in favor of one class or the other they could be treated as ‘A’ and ‘B’ fleets. My only variation on the theme is that boats built as referenced in my first example that measure as 6M boats [edit: or 30R] be allowed to participate.

As a side note both Bloodhound and Witchcraft are currently listed for sale at yachtworld.com. An image of the latter’s lines are included in the listing.