Last August I repaired the port side forward port (the big one), rebedding the glass in marine silicon in the alloy frame and repairing the porthole in which it sits. That port was leaking water on the galley side. It seems to be dry now, so this last weekend I did the other side, which leaks water into the chart station, ruining anything not waterproof in the desk and so on.
Gaps filled and epoxied..
Gaps in port frame before thee repair.
The port before repair
For some silly reason I can’t find or did not take pics of the frame, nor of the finished job, but I will add them later. Neither repaired job is perfect – I need to clean up the silicon from the glass, but it will keep the water out. Four more to go, two each side (smaller).