The Oday 20 has 400 pounds of lead ballast for stability. The boat can float in as little as 14 of water.
Some of the boat specifications are:
overall length 197
waterline length 173
beam 7
draft minimum 14
draft maximum 311
sail area 190***
max. recom. h.p. 15 but I recom h.p.10 to 5 h.p.
mast length 27
mast height** 31
mast weight 42lb
boom length 96
boom weight 10lb
c/b-keel material lead
c/b-keel weight (approx) 400
standard rudder material fiberglass
Seating 6
Sailing displacement 2425 with 4 people at 150 lbs. each
Minimum trailering weight 1825
Complete hull weight only 1750
Safety features: self-bailing cockpit and self-righting

My sources from the Oday cruisers book
if you have questions e-mail at cashman2310 at yahoo.com