The wreck diving specialty goes way beyond a wreck dive in an AOW course. Multiple dives; planning for special equipment use and practicing its use, rules for penetration, and so on. There is a difference in swimming around a sunken ship and entering part of it. There is technique to swimming with a line you deploy as you go, and keeping it from tanglingorr breaking,. These are just some areas you will address in a wreck course. I encourage you to take it. You will increase your skill set, and learn a bunch of safety practices so that if and when you are ready for some serious wreck diving, you can enjoy it.
DivemasterDennis