WAC 308-93-071. Class "A" and Class "B" certificate of ownership

Is there more than one class of certificate of ownership for my vessel? From June 30, 1985, through June 30, 1990, there were two classes of vessel certificate of ownership: Class "A" and Class "B." Effective July 1, 1990, the "A" and "B" classifications of vessel certificate of ownership were discontinued. All vessel certificate of ownership, regardless of any classification previously assigned are considered to be exclusive evidence of ownership unless a person can provide sufficient evidence the certificate of ownership was issued in error or is invalid for some other reason.