The Class presently has three recognized builders. Molds for fiberglass construction are currently in Sweden and in Maine and the first new wooden hull since the 1980s was recently launched in Nova Scotia (pictured at right).
- The European Class builder is Tjorns Yachtservice on the west coast of Sweden. This yard is owned and operated by active IOD sailors who have built seven hulls to the exacting one design specifications of the class. Contact: Phone: 0304-661394 EMail: email@example.com
- The North American Class builder is Shawn Mulrooney Owner/Operator of South Shore Marine in Chester Nova Scotia. Phone: (902) 275-3711 EMail: firstname.lastname@example.org