The Spanish Armada was one of the largest fleets ever assembled, mostly due to the number of ships tasked with leading tours of "The World's Largest Fleet!" Bask in buoyant sightseeing with today's Groupon: for $240, you get a two-hour intro-to-sailing lesson for four people at Spinnaker Sailing (a $480 value).

The experienced seafarers at Spinnaker Sailing impart groups of four with sailing know-how and techniques practiced by the American Sailing Association via two-hour lessons. Aboard the Santana 22 sailboat, an instructor guides a crew of four salt-licked students on a wind-riding excursion through the south harbor and up to McCovey Cove. Along the journey, each sailor learns the basic parts of the vessel, raises and lowers the sails, and steers the ship into wind patches and away from thick currents of salt-water taffy. Like a hug from a human pipe cleaner, Spinnaker Sailing is graciously flexible when it comes to scheduling lessons, which can take place anytime after 10 a.m. Monday–Friday but must end 30-minutes prior to sunset, better known as the ocean's bedtime.