A triumph of hope over (most people's) experience.
Tax (if due)
Red Lead Powder 1kgPS-0080
Availability. Usually in stock. Mix with linseed oil putty - about 1:10 - for a good underwater caulking compound. If your topsides are a light colour, the red may leach through, so white lead may be better.
Caulking Cotton 500g BallPS-0160
Availability. Usually in stock. The strands can be separated or combined to provide the right thickness for the job.