They probably used the plan vault that the museum has for the Cobia and picked an old plan. I have a copy of their plan list for the boat and it's big. I bought the dry dock plan from them years ago and got the plan list too. Funny thing, I paid $25.00 for the plan shipped to me and when Revell took an interest in the Cobia for a model their copy service prices took a steep jump in the up direction. If anyone's interested I can email the file, it's an excel file.