I have a 1987 Marlin Empress which is 23'4" long. I believe the Cearo is the same hull except with a little taller sides, flat deck, and built in swim platform. Mine runs barely 80 on a perfect day with a 600hp 502 and bravo. It starts to walk some at around 70 but nothing you can't steer out of. Marlins were made in Tigard, Oregon. They went out of business in about 1993? I believe. Had a good reputation. I have a test on my model from 1989 with HotBoat Mag. The test boat had a 460 King Cobra and went 60. They are a modified V, around 18 degrees I think. In lake Michigan, there are many times when it kicks up we wish we had taken one of the bigger boats, but it always gets us there, even in 6's to 8's. Just have to barely keep it off plane, nose high.