This company has a fleet of seven yachts ranging from 40-passenger to a three-deck, 880-passenger behemoth. On Hornblower's 2-hour narrated harbor tour you'll see the Star of India, cruise under the San Diego-Coronado Bridge, visit the Hotel Del and the Submarine Base, and swing by an aircraft carrier or two; a 1-hour itinerary is also available. Guests are welcome to visit the captain's wheelhouse for a photo op, and harbor seals and sea lions on buoys and barges are a regular sighting. Whale-watching trips (mid-Dec to late Mar) are a blast, and Hornblower does special itineraries for most holidays (like a fireworks route for Fourth of July festivities). There's also a 2-hour Sunday (and Sat in summer) brunch cruise at 11am, with unlimited champagne and a plentiful buffet, and nightly dinner cruises.