Windstar Sail Cruises was formed in 1984 by three Scandanavian-Americans. They ordered two sail assisted cruise ships, which were designed by Wartsila, but built in France by Societe Nouvelle des Ateliers et Chantiers du Havre. The first ship \"Wind Star\" (5,307 grt, 148 passengers) was delivered in 1986 and the second, Wind Song in 1987. At the time of the delivery of Wind Song it was announced that Holland America were injecting funds to give them a 50% shareholding. These funds were to be used to buy two more ships from the French shipyard.
Things obviously did not go as planned, because later in 1987 Holland America acquired the entire company and cancelled the fourth ship. The third ship became Wind Spirit and was delivered in 1988. Also in 1988 Carnival bought Holland America and thereby became the owner of the three ships.
The French shipyard went on to build two much larger ships for Club Med (14,745 grt, 312 passengers). These can be identified by the fact that they have five masts. Sadly the French shipyard then closed. Things did not go well for Club Med either, but Carnival greatly improved the performance of Windstar and in 1997 they bought Club Med 1.
As the ship in the picture has four masts it must be one of the first three. Wind Song was stationed in the Pacific, until she became a CTL after an engine room fire in 2002. So the ship must be either the Wind Spirit (based at St Thomas) or Wind Star (based at Bridgetown)
Earlier correspondence exists and I may have a photo at home (now travelling), so will look it up next month, Fred is giving a pretty good picture about these vessels and I remember he also made references of same kind earlier.