The carbon monoxide sticker is a new requirement this year in Minnesota, the only difference is that it applies basically to cutty cabin type boats, , boats with a permanent closed bow where someone can sit/lay down.
What brought that on was a few years back there were some folks out on there boat, the boat was "longer" cutty cabin with an inboard, , not an IO but a true inboard. The young daughter wasn't feeling well so she went into the cabin to lay down. She never got up, the cabin was full of carbon monoxide which was ultimately attributed to a small leak in the exhaust system.
The interesting thing is that as the story unfolded all or most of the people on the boat were not feeling well as the day went on. Headaches, etc., they just attributed it to being in the sun, etc. The other interesting thing is that one or both of the parents were doctors, but no one in there wildest dreams thought it was carbon monoxide as everyone except the daughter was out in the open, , in the fresh air.
