My boat, Freedom 28 is certainly “production”, however is not as mass production, as others, mentioned here.
They have proven offshore record, and I, with my limited experience, feel quite confident that boat can take more than I can so far. However, my boat designed with long travel in mind. On another side yearly Freedom 32, which have all attributes of modern boat – fin keel, spade rudder, fun to sail, big interior, did quite a few long, cross ocean trips.
There was Catalina 27 which went around a globe, staying south of Africa. I run across an article somewhere on internet where owner described all modifications he did to the boat. List was extensive, however all things were typical – adding handholds, reinforcing here and there, etc…