Swan 48 is a GRP constructed, fin keeled, masthead sloop or yawl designed by Sparkman & Stephens with a design number 2079 and manufactured by Nautor Oy.[1][2][3][4] The original 48 was designed to rate under the I.O.R. and at the same time to offer the comforts of a great cruising boat.[5][6] Because of this design criteria and its extremely strong structure Swan 48 suits very well for trans ocean racing as well as comfortable cruising and even circumnavigating the world. It was in production between 1971 and 1975 with 46 hulls built in total. It is not to be confused with a German Frers designed Swan 48 model which was in production between 1995 and 2003.