... Basically, the more mass righting moment versus hull righting you have the more comfortable the boat. ... For me, the key number is the ratio of mass righting moment to hull righting moment. For lightweight cruisers and racers, this number is nearly zero. For heavy keel cruisers like the Island Packet, this number is closer to one.
What do you mean by this: For lightweight cruisers and racers, this number is nearly zero.
Are you saying that a racer has near 0 of what you call mass righting moment, as opposed to hull righting moment? Can you explain that?