Submarine in 688i vs Dangerous Waters
 

I noticed they are selling a pack that includes DW and 688i. Is there any point in having both? The submarine model looks pretty much the same in DW to me.

The navalsimengine evolved significantly from 688I to SC and from SC to DW, although it is in essence the same simulation. 688I was a very "complete package," though, in terms of all the stuff outside of the simulation itself.

If DW is cheaper just get DW imo.