How to handle humidity

No-no, be nice, be friends

You talking about my picture, the 3 pumps in the forward bilge?
The sump pump, upper left corner is manual, I turn it on if the bilge pumps did not empty the sump.
Not made to be submerged, hence I installed it on a shelf 3-4 inches above the
Rule 2000 automatic pump.
Further aft in the boat there is 2 more automatic bilge pumps as well as a manual “Rambo” pump. (Pump hard or die you swine)

Just gets boring. Reminds me of my dead brother who, once he started drinking had to argue about everything. Only his (drunk) opinion was right. Boring.

It was an O.I., couldn't make out the shelf with my old eyes. 3" isn't much water. Why not use all submersibles?

Only your opinion matters....but your opinion is based on smaller boats.... 1" of bilge water that's 1.5-2' wide and 20-25' long adds up to more than a few gallons of water.......and a lot of surface area for humidity to form. I don't know of any quality builder that has routed A/C condensate into the bilge (not a sump or overboard) in the past 25 years.

ZZZZZZZZZZZZzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Ouch, quite a few of us may be guilty of the same thing..

BTW. I am NOT your brother (Thank God), and I don't get drunk.

Next post will be why do I have a smell that I can’t find. Lol

I can't believe an "experienced captain" would go "years" without cleaning their bilge. Talk about "gross". Not only gross but incompetent.
Not only that but completely off-topic and irrelevant. How far some fools will go to perpetuate an inane argument.
BTW, that same "slime" is in your drip pans and that same smell is coming up through the hoses from your sump. When was the last time you cleaned them?
Fools looking for something to fight over. Get a wife.

Blah, Blah, Blah, Blah.

For those who wish to continue this stupid debate I suggest you do a simple Google search about draining condensate. You will find that any number of boats (especially older boats) were manufactured with the condensate draining into the bilge and being pumped out from there. You will also find many who don't like that and have found various other methods, from using the sump pump to cutting more holes in their boats. If it ain't broke don't fix it, but if it bothers you and you don't mind spending a little extra money do it. It's your boat. Today you'll find more boats coming equipped with a contained option. Some put more holes in their hulls such as Rinker. So enough of this stupidity. Do a simple Google search and learn, and back to the original topic people up north should use the dehumidifier function except when the heat waves hit. People down south keep the A/C on cause those boats need to be cooled, and when the a/c is on it's dehumidifying.

Knowledge is never wasted. Maybe in this life you'll work on them and it'll come in handy. Plumbing it into the exhaust would be fixing a non-issue by complicating it, but good thinking.

Been doing this for about a year, works well. As Pascal suggests, take the time to route a drain hose to a shower drain/sump and you won't have to empty the drain pan. The dehumidifier makes a huge difference and keeps the humidity down to 45/50% below where the staterooms are located. All of our air handlers drain overboard not to the bilge.

Be well.