Clog drain tube

[nymack66]

I bet you guys are right I kinda over did it with the foam it came up all the way to the deck during the pour I had to cut off the excess:) , and in fact did NOT wash the Boat down until this weekend hence my discovery!
If that's the case I will sleeve it with a smaller pipe after I clear it using a hole saw attach to a pipe or something brace your self the photo will follow with what I am thinking at this point.
You guys are simply awesome! Thanks to all