Complex sentence: Swan 65 is a large, GRP constructed, fin keeled masthead ketch or sloop rigged sailing yacht manufactured by Nautor's Swan and it was introduced as the new flagship of Nautor in 1973.
Split into simpler sentences: Swan 65 is a large, GRP constructed, fin keeled masthead ketch or sloop rigged sailing yacht manufactured by Nautor's Swan. It was introduced as the new flagship of Nautor in 1973.