We took the 2 hour cruise of both the North and South Harbor. It was a fantastic experience. Oscar was a fantastic narrator, I was impressed with his knowledge of everything in the area. Off the top of his head, he could tell us about each ship based on the number. Yes, there was a list he could refer to, but he only did once in the hour we were on the South cruise (I couldn't see him where we sat on the North cruise.) The sound was great and the views spectacular. We sat on the second deck in the back of the boat on the first, North, tour. For the South tour, we moved up to the top deck. Very comfortable, great service, and a wonderful experience. I highly recommend this cruise if you would like to see the San Diego Harbor and learn about the history, the current, and the surroundings.