Hello Oliver, Thanks for letting us know about the SO 42.2. We’ve taken a look and agree that the 42.2 has a spade rudder without a partial keg. We have not been able to locate a drawing that includes the keel and rudder but we saw some photos and have removed the drawing we had on the 42.2 record, which we now believe is the drawing for a Sun Odyssey 42 (1990-1992).