Coppercoating and bow/stern thrusters

[ianc1200]

I'm in the process of having bow and stern thrusters installed, and the boat coppercoated. I notice the manual says "to prevent corrosion problems, do not use copper based antifouling". Yet many of the boats on the hard have coppercoating and bow/stern thrusters. Anything to worry about?

 

[Elessar]

I'm in the process of having bow and stern thrusters installed, and the boat coppercoated. I notice the manual says "to prevent corrosion problems, do not use copper based antifouling". Yet many of the boats on the hard have coppercoating and bow/stern thrusters. Anything to worry about?

No. Coppercoat is inert. Zero problem. And you don’t need to leave a gap around metalwork like you do with regular antifoul.
You don’t paint the actual metalwork with coppercoat but only because it probably won’t stick.

 

[Sticky Fingers]

What Elessar said.
My boat is coppercoated. Thruster props are done with Propspeed or whatever, not CC.

 

[ianc1200]

Thanks for the replies.

 

[rafiki_]

What Elessar said.
My boat is coppercoated. Thruster props are done with Propspeed or whatever, not CC.

On Rafiki the thruster props are not coppercoated, but the stern thruster and bow tubes are. The main props, shafts, rudders and trim tabs have propshield.

 

[Sticky Fingers]

On Rafiki the thruster props are not coppercoated, but the stern thruster and bow tubes are. The main props, shafts, rudders and trim tabs have propshield.

Yes, mine’s the same, unsurprisingly as we both used the same CC and underwater works contractor.

 

[MapisM]

Any reason for CC-ing the stern and not the bow thruster, folks?
In my boat, I've got velox plus for main props and rudders, but CC on both thrusters, and I never had any issue.
Both plastic props for the records, as opposed to nibral for propulsion.

 

[rafiki_]

Any reason for CC-ing the stern and not the bow thruster, folks?
In my boat, I've got velox plus for main props and rudders, but CC on both thrusters, and I never had any issue.
Both plastic props for the records, as opposed to nibral for propulsion.

Simplistically the stern thruster tube sits proud of the transom, and thus is coppercoated inside the tube and outside. The bowtruster tube is internal within the bow, and is coppercoated internally. Both propellers are plastic, hence no treatment.

 

[MapisM]

Aha, I see. In my boat also the props were CC-ed, together with the tubes.
So far so good, CC seems to stick well also to plastic.

 

[Sticky Fingers]

Mine's like @rafiki_ ... tube CC, plastic prop treated with Propspeed. The advice was that the CC doesn't stick well to plastic, but maybe that's out of date based on your experience.