I Feel Your Pain .................
I NOW KNOW IT IS THE DISCHARGE HOSE THAT IS THOROUGHLY BLOCKED, from years of PO neglect.
................... and think that most PO's (whoever they are) should be dipped in their own discharge. There should be an open season on these villains. Almost every problem one hears about seems to be traceable back to a PO somewhere. I mean, someone has to take the blame here.
The hose in here now is heavy black sanitation hose that is surrounded by metal wire. It's heavy and a ***** to maneuver and I don't know how to get it out without spilling more sewage in places
But that aside, it sound like this villainous PO used exhaust hose for sewage discharge hose as wire wound is not the norm for this application. This stuff is not fun to work with.
For openers, you can go cheap and buy tapered wooden thru hull plugs and pound these into the open ends of the hose as it now stands. Finish off with duct tape as a final prayer. This should make the work a little cleaner. Perhaps cut the hose into shorter lengths to work with in the removal. Lots of plugs now. Considering the material you're working with, a better choice would be expandable pipe plugs from a big box hardware store to ensure no leakage. I'd much prefer working with pipes in the damaged Fukushima nuclear reactor to dealing with plugged sewage hose in my boat.
Next, try arming yourself with two or more 1500 W hair dryers and have a few people you really dislike heat the hose to 200+ deg. to make it more flexible. Allow for air expansion when heating the hose or you'll create a crap cannon with plugs flying everywhere. This should do the job.
As a final note, check the "search menu" for the best sanitation hose and ensure it's not wire wound in case you have to do this again years down the road. Definitely use the hair dryers when installing the hose.
Good luck on a very sh*t*y job

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