12mR, 8mR and the 6mR.
This means that you constantly are trying to get more speed out of your old pram by progressing in attention
to detail as well as rebuilding the hull shape or refining the keel configuration when you have an idea of how to
get another fraction of a knot more speed out of your boat.
With good understanding of what produces speed for a sailing yacht and some work you may very well become
competetive at top level in an older yacht. My yellow rocket SWE 162, a Södergren mk III that was abandoned
many years ago is a good example. After a thorough update structurally and some tweaking with the certificate
it became a constant threat to the newbuilt yachts.
Some may even be brave enough to design/build a new better boat in the garage during winter, or to collaborate
with a designer/boatbuilder for a new bid.
This distinguishes it from most one designs, where every couple of years you have to get a new boat because the old
one is clapped out and no longer fast enough.
"To those who say that one-designs provide fairer racing I would say that it is equally
valid to win races on the merit of the entire project as well as just sailing skill"