I think i figured a few things out.
The dice box is used to shake the dice and align them in the tray you pull out. The tab is then pulled out and you read the hits from the side of the long tray you just pulled out. In that way you can randomly allocate hits. I suspect as in Bulge… each unit will get a specific number of dice… OR each unit will still have a hit number and this is indexed with the side of the tab that is pulled out.
6 types of naval units ( corresponding to 6 different hit allocations)
Battleship’
Carrier’
Cruiser
Destroyer
Transport
Submarine
I further think that planes make separate attacks concurrent with naval ( round of naval, round of air)
and their hit allocations are also printed on a second tier above the ship icons on the tab you pull out to figure out the allocations.
I also think the land combat is under this same system, except im not sure if their another tab you pull out from the box ( perhaps from the other side) because i don’t seen how they are going to fit the information on only one tab.