Hello, just joined this forum. Have never owned a water worthy boat. Still don't. Do have a 1999 Bayliner 1850LS Capri - which my brother bought NEW; but only ever had 'professional' service places deal with it. He didn't do the maintenance himself. Couple years back - he went to sell it (he was moving); and the last interested person - told him the engine was froze - which Ed didn't believe... so he called me - and I got a boat for free. Late last year - I did actually start towards getting it to be water worthy - to find out the engine (Carbureted; 4.3L; 6cynlinder) is indeed froze. And we've been covering it with tarps.... over the last couple of years. Before I found out it was froze; purchased a custom boat cover.... Yesterday went to put that on - had to move the boat to do that; ended up having gas leaking - because of a broken fitting - which I got replaced today - since I don't need gas dripping or soaking into the haul. While installing the replacement fitting - (replacing a broken fuel check valve) - I noticed the following couple of devices or "thingy's". Have zero idea of what they are. The one that is in the haul - is fastened down (somehow) and is not removable - unless you want to break it. The other one was obviously fastened down close by - but I have no idea of how or what they are. Anyone with some knowledge - please let me know. Thank you.