The problem is you've got to then remove the humidity from the absorbers somehow. Whereas my dehumidifier pumps the water it collects outside the humid area; mine fills its catch basin in under a day when the pump isn't enabled or isn't working (grr). I'd wonder about capacity of those moisture absorbers too, but I guess you can always put a ton of them.

No, that's how a small dessicant fabric bag works that you might stick in a sealed box, but these aren't like that.

They fill up the lower transparent half of the bag with clear water (dessicant invisibly dissolved in it) that you just pour down the drain and throw away the now empty bag.

Each bag can hold .5 or 1L of water; in a stateroom (bedroom), you might have to replace the bag once a month, depending on the humidity on board.

No risk of overflowing, since once the dessicant is used up, it stops working and the bag just sits there, visibly full of water.

I've had the occasional slime growth which clogs the drip line. I connect a shop-vac to the hose connection and schloop it out.

It does disturb me that stuff sometimes grows in there, though.

Well, lots of airflow, lots of water, fairly warm; slime growth 101 right there. I did find the line blocked, and trimmed it back to a more approriate length that seemed unconstricted. Shop-vac is a good idea. I also need to see if there's a pre-pump filter or something that needs cleaning.