ummm are you asking will stuff get wet inside if you take a SPILL into some body of water, then YES. If you want to ensure water PROOF ness, then you should look at getting a drybag to insert whatever pack you decide on.
The SAP weighs in at about 1800CI for the pack alone, I also have a couple of the modular side pockets that add about another 450 CIS thereabout. It is an excellent knockaround pack IMO.
Yes HAD a Marauder
but I think whatsa comingwill be good too
EGG