OK, let's take this from the top.
Loki has 30 "cargo cells". With 6,000 tons misc. weight, that's a maximum of 200 tons per "cell". (Some tonnage will be taken up by cranes and whatnot, but that's the maximum.)
Now things can, of course, be "stacked" in each cell, but that's another can 'o worms...
Each cell is 25 feet by 10 feet. So that narrows things down some more.
With all those cranes, the ship is obviously designed for 'self-contained' loading and unloading, without regard to port facilities.
Torpedo-boat carrier? Well, we know that that's at best "very close" - and doesn't make sense anyway. Without any armour, they would run a high risk of having their base sunk, leaving them stranded.
Seaplane carrier? You'd have to disassemble the 'planes to fit them in the holds, so that's not a really plausible idea.
So, that leaves us with one mission I rank as "high probability".
I hereby declare Loki to be some form of amphibious-warfare ship, designed to launch small craft filled with Danish Commandoes.
Y'know, I've heard crow tastes mighty good with a little ketchup...