I recently purchased my 27 and I need the hull number. I have seen threads on here that state it is on the starboard side way aft. I checked, not there. However, there is a metal plate mounted all the way aft in the cockpit. It was obviously mounted there by Catalina (has their address, etc.) and it has a stamped section labeled "serial number". It is 4 digits long. Could that be the hull number without all the letters for month built and etc.? Thanks for any info.