You have a Lodestar. Many were homebuilt . Cox Marine
, in the U.K. , manufactured many as well . My sister-in-law had the first Cox Lodestar imported to the States back in the 60's . If you have specific questions about your boat, feel free to contact me through my contact info in my profile. I have been building trimarans since the early 80's and may be able to steer you towards the answers to your questions that I am unable to answer.