deadrise

on sea ray boats you only see one number for the deadrise. I want to know where the deadrise advertised on sea ray boats is measured from the transom/stern or from the bow

Hello, 1986 25 ft fisherman cuddy I am going to install a Garmin (airman p79), shoot thru the hull transducer, mid ship, (unless someone suggest a better spot). If anyone knows the 'dead rise" at forward bilge area, please let me know. Also, if anyone has installed this transducer and...