Port Townsend Sails was founded in 1978 by Carol Hasse.

The sails made by Port Townsend Sails / Hasse and Co. are world renowned. For two decades, the Seven Seas Cruising Association’s membership surveys have acknowledged Port Townsend Sails for building the best offshore cruising sails available anywhere.

Hasse has logged over 45,000 offshore miles in northern and southern latitudes on wood, fiberglass, ferro-cement, and steel boats ranging in size from 25-100 feet. She has sailed on both mono and multi-hulls and on vessels with traditional and modern rigs. She has been involved personally and professionally in the building of fiberglass and wood boats and has owned a 25-foot wood Nordic Folkboat since 1979.
While retired, Hasse continues to provide in an advisory role for Port Townsend Sails, and lecture for the Wooden Boat Foundation, boat shows around the country, and for various sailing associations.

In 2021 Hasse retired, and the Port Townsend Shipwrights Coop purchased Port Townsend Sails / Hasse and Co.