Moved engine exhaust through-hull

The through-hull was a few inches below the waterline.  The exhaust through-hull should never be below the waterline, for two reasons: 1) you need to be able to see that water is coming out of the exhaust, to be sure that raw water is cycling through the cooling circuit 2) there is greatly increased possibility of seawater backing up the exhaust and flooding the engine–which is a bad bad thing to do to an engine

We moved the engine exhaust through-hull up above the waterline a few inches, and glassed over the old hole. The old engine through-hull had a janky fitting to connect to the hose, which was prevented from leaking solely from excess 5200. So we found a through-hull threaded on the bottom for the nut, with barbs at the top for the hose. It’s above the waterline now so we elected not to put a seacock on it.