For reasons that I may write about later, my main mast and mizzen are deriged and off of the boat. As a result, I cannot use the mooring cover because the masts create the ridge of the cover. So the boat is entirely uncovered except for the spray hood (enclosed bimini).
This past weekend, we had two days of consistent rain. The first day was nothing more than a drizzle. Before nightfall, I took a walk down to the boat to check on the lines and pump out a bit of water, if necessary. At this point, I believed that I could keep the self bailer closed for the night as long as I revisit the boat the following day and pump out whatever rainwater accumulates in the cockpit. That night, however, we had more rain than we have had in a long time. Upon visiting the boat the following morning, I was pleased to see that there wasn't that much water in the cockpit, but I did notice a slight list to the port side. I pump out the water and move on to my second objective: check how much fuel I have so I'm prepared for a day on the water the following day. I open up the port hatch and can't believe what I see. It's filled with water. All of my gear and the fuel tanks are floating in a lot of water. I empty the hatch of its gear before I try to start troubleshooting. I check the starboard hatch and am relieved to see it has not suffered the same fate. It takes me a few minutes to figure it out but then I see the problem. The fuel line opening.
I now know that a similar issue was written about years ago (Flooding locker on BayCruiser), but the problem's circumstance was a bit different. Their locker flooded via the fuel line opening while sailing on a port tack (their fuel tanks appear opposite mine).
The water level in my cockpit had risen enough that water was pouring through the fuel line, opening and filling the port locker. To be honest, I am astonished at how small the margin of error needs to be here for this to become a problem. The fuel line opening is only a few 3-4cm from the cockpit floor, which means if the floor accumulates this much water = the port locker fills with water: kinda SCARY.
I do not see a way of fixing this issue other than preventing it (suggestions are very welcome!). So here is what I think I have learned:
1) While at a mooring, use a mooring cover when possible to prevent water from getting into the cockpit
2) If #1 is not possible, the self bailers should remain open. If the water level rises in the cockpit, it should drain out the self bailers. Hopefully, it drains before getting to the 3-4cm level! Not much room for error!
3)Not that this was a problem for me, but I have seen a few people ask about leaving the bilge filled or empty at mooring. I cannot think of a single reason to leave the bilge full while at mooring. I want as much positive buoyancy as possible so that the natural laws are working in my favor and encouraging the water to seek the lowest possible place to go: out of my boat through the self bailers.
4) I really need to find an automatic bilge pump solution to put in the sump so that I can keep the self bailer closed and the cockpit entirely dry. Not ideal because I was hoping to avoid having to deal with batteries and wires. (I have found this incredible solution:
https://www.youtube.com/watch?v=jvWQA5sYSmg, but I am not confident this has the flow volume needed to handle a downpour).
Feedback is very welcome! I'd like to feel comfortable leaving the boat without being monitored for a while so I obviously have some things to figure out.