I enjoyed the show, but can see why it only lasted a couple of seasons. Outside of divers and naval historians, shipwrecks are not all that interesting. I think the core audience for a show of this nature is way too small for a cable channel like the History Channel. The other problem was that the show was on at some pretty irregular times, which really made it difficult to gain a regular audience. I also would imagine that it was one of the most expensive shows to produce, and without a large audience it didn't make sense to keep it going.