galvanised parts on steel hull

[dick]

Is it ok to use a galvanised pipe as a radio and radar mast bolted to a steel flybriddge on a steel boat same goes with a fully galvanised davit crane will they become sacrificial zinc for the rest of the boat?
If so maybe insulation will isolate and protect them.

[Brent Swain]

No problem at all. I've used welded on Galv for lifelines, handrails and used pre galv sheets for my decks , cabin wheelhouse, and cockpit , no problem in 25 years. Wash it with TSP,then water, then vinegar, then water , and let it dry before painting.
Brent

[dick]

Thanks for the help what is TSP?

[tazmann]

Thanks for the help what is TSP?

TSP Trisodium Phosphate All-purpose heavy duty cleaner.

[Brent Swain]

Be wary of Galvanized cleats . They are almost all cast iron, brittle as glass. I one broke all the welded on galvanised cleats off a boat ,with a single swing of a claw hammer for each one, very dangerous if they break under load.
Brent