Originally Posted by jyasaki
No registration numbers on the boat? (It would be required here in the States.)
Fortunately boating in the UK is somewhat less regulated!
If the hull was probably had a hull id no on it when built (and certainly since the RCD - 15 yrs or so ago?) - but the older a boat the more likely that its fallen off or been removed. However ever with the HIN there is no central database so tracing the owner would only be straightforward if it has been reported stolen and the owner knew the HIN.
And of course the numbers may have been removed by the thief.
On the otherhand this lack of central control is part of what makes it easy for boats to be nicked.