[PaulK]

So it could be that some Jaguar 22’s were made with fixed keels and spade rudders. That calls for further research. The chatbot output about MK I and MK II  versions is confusing.  Where did it get this information?  It could be incorrect because online information that is posted (and which the chatbot searches for data) is not vetted. People can post  whatever they like – that the moon is made of green cheese, for example – and chatbots will simply add that to their “data”.  If enough people post about the moon being made of green cheese, or perhaps simply refer to the idea, the chatbot increases the weight given to that idea and spews it back to you. Garbage In, Garbage Out. On another site someone quoted a chatbot to state that a C&C boat had a cast iron keel.  C&C has never used cast iron keels. You have to verify chatbot output yourself.