SWO boards cover OOD but also encompass much, much more. You have to know your current ship in extreme DETAIL. You have to know every class of ship, submarine, and aircraft the Navy has, what type of radars, propulsion systems, and the weapons systems they have and how/what they can be used for. You have to know the differences in ships, subs, and ac and why some are more advantages in some situations than others (ie would you rather have a CG or DG as an air defense commander and why, what is the difference between DDG flight I, flight II, and flight IIA, etc). You also get asked questions about CSG's, ESG's, air ops, amphibious ops, etc. I had to "draw" different types of operations and explain what everything means (what is a stovepipe, what are the flight patters of aircraft when you are doing x type of ops, what is a chip light, what does a LHD carry, what about and LSD, for this amphibious assault, why did you place these ships there, if you are going through the SOH, what order will you put the ships in and why, etc). You also get asked supply questions, general admin, and on and on. Pretty much anything is game.