The main hatch over our spare berth had developed a small leak....the only solution is really to remove the hatch and redo the caulking. Tedious process as the caulking is likely 10 years old or more.
We disassembled the hatch and cleaned all surfaces.
Just brute force, no other way to do it.
A messy but satisfying project.
All done, just waiting 24 hours to remove the excess caulk and masking tape. Ah, the joys of boat ownership!