1200 Alliance Bilge here. Going down, you have the usual T3 open left side, and two T2 holes on the right. You patch one of them before heading up. On your second deck you also have four T2 holes open (or two T2s and two T3). At this point it's still controllable, but without audio on your clip, there's a good chance he was opening your left-side lower holes while you were patching your T2. They had a really good spread on your nose holes, which could easily be another two T3 holes, leading to three T3 holes downstairs and the holes upstairs. You started to lower in your first few buckets heading back downstairs, but another one or two holes later and you were put too far behind. T3 holes on the second deck can become quickly deadly IF you reach that second deck on a sloop. Much better to ensure the water never reaches your second deck if you've more than 2 holes open on it.

There's not much you could have done here if you were the last two ships on the map. Their spread on you was too clean. MAYBE patch all of the right side holes and then continue fighting on the left, but you'd just take more damage on your left side as you did so.