My wife and I were headed to one of favorite weekend spots at Put-in-Bay in Lake Erie. It was a 3 1/2 -4 hour trip on a Friday evening with winds right on the nose so we were motoring. With no other boats around, so we had the course plotted and let "Otto" do the steering while we read.
It was relatively quiet until we both heard a 'plunk' in the cockpit. I have dropped my fair share of nuts and bolts over the years to recognize that this wasn't just a tiny screw. We looked around everywhere and couldn't find the bolt. I then looked off the stern down at the ladder and saw a large hex head bolt resting against one of the rungs of the ladder. Thankfully I was able to retrieve it but now it was real panic time because that was a big bolt and it sure looked important. Again another search throughout the cockpit to try and figure out where it came from with now success.
Everything was still working and we were still 10 mile or so out, so we decided not to touch anything and continue to let "Otto" steer until we got close to our destination. Once we got close and since "Otto" was successfully steering us, I played with the manual controls on it to see if I could use that to steer if need be and found that I could. I figured in a worst case scenario I could pick up a mooring ball manually controlling "Otto".
As we got into the harbor, I disengaged "Otto" and found I had full functionality on the wheel and we made an uneventful pick-up of a mooring ball. It was dark at that point, so the only real thing to do was have a beer or two and wait until morning to go in search of the home for our wayward screw.
The next morning, I again looked all over and finally decided to pull the cover over the steering cables in the back of the cockpit. I found where our screw came from...YIKES! There are 4 screws holding a collar around the rudder post. This collar is the main connection from rudder post to the steering. One bolt was missing (the one we found) and another was backed out about 2/3 of the way. I applied lock-tite to the bolt and replaced it and then did the same for the remaining bolts. I finished the repair in plenty of time to enjoy the afternoon/evening entertainment on shore.
Never had an issue again with that. We were very thankful that we heard the bolt fall, it didn't roll overboard, I figured out where it went and it was fairly easy to fix.