Measurements
Not every boat has every measurement
Length and draft are there for nearly all 7,051. Ballast and rig dimensions mostly aren't, because they only apply to keelboats.
Boat designs
Every model, and who built it
The company that built each one, the person who drew it, and how many they made.
Marketplace
What is for sale right now
Free boats, cheap boats and project boats, on other people's marketplaces, linked straight back.
Classes
Most active classes
With an association, a fleet and somewhere to race.