Cuba began exporting some raw sugar in late February after a disastrous start to the harvest, foreign traders and shippers said this week, but tonnage will fall far short of plans. Cuba produced 1.8 million tonnes of raw sugar during the 2016-2017 harvest, and hoped to reach 1.6 million tonnes this season despite damage caused by Hurricane Irma, but out-of- season rainfall in December and January all but paralyzed harvesting, forcing cancellation of shipping contracts.