DRS, Drifter, Blooper, Asym Spin, etc.
Over the years cruising spinnakers have been called a variety of names. The current popular term is asymetrical spinnaker. The main difference between a cruising spinnaker and a real spinnaker is that the cruising spinnaker is flown without a pole. This leads to some major operational differences, but the general idea is the same, to add downwind power. Not having a pole makes it easier to set and trim and especially to jibe. Cruising spinnakers almost always have a snuffer or sock, but sometimes real spinnakers do also. Here is a Web site with some more information (no endorsement intended) http://www.macksails.com/spinaker.htmAnd this one is especially interesting:http://uksailmakers.com/assym.html