Prop coatings

[Skipperdejavu]

Are propellers coatings any good, are they just for people that use their boats a lot or not a lot?

We have a fairline targa 47 gt

We run at mixed speeds either 8kts or 25kts

Are you just better off getting a mid season lift out or a diver?

 

[Greg2]

If you search online you find mixed reports of the various offerings that range from absolutely hopeless to okay. The two pack stuff such as Silic relies heavily on application being correct and even then it appears to be a bit of a lottery whether it works.

When we had outdrives with aluminium props we used standard Trilux and it rarely stayed on the entire props for kong.

We didn’t have any on our Hardy but after a bad year for fouling we went for Hammerite special metals primer (reports in PBO indicate that it sticks well) followed by Velox prop anti-foul. Some slower boats cited good results with this mix so we thought we would give it a go.

Hadn’t lost speed by the end of the season to the extent we had year before but she has stayed in during the winter so no idea what the stern gear looks like now. We will see how she performs when we next go out.
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[petem]

Lots of people in the Med (including us) use Velox. It's cheap and easy to apply but I don't know how effective it is in the UK.

 

[FatherTed]

The picture below is the first year I used SeaJet on my aluminium props, you can see how this looks after 1 year in the water especially compared to the legs.

Last year I also used SeaJet on the legs and after just over 1 year in the water there is only a brown slime on the legs and the props are still clean.
I am on the Hamble before the bridges.

 

[Farmer Piles]

All the superyachts use Propspeed apparently according to the guys who work at Pendennis Shipyard. I put it on my single prop shaft drive and it has worked really well. Going to make it do one last season as the boat won't be in the water until mid to late June this year - we are away.
Applying it sounds onerous and a faff but it's really OK if you get everything lined up and watch the video first.

 

[petem]

The picture below is the first year I used SeaJet on my aluminium props, you can see how this looks after 1 year in the water especially compared to the legs.

Last year I also used SeaJet on the legs and after just over 1 year in the water there is only a brown slime on the legs and the props are still clean.
I am on the Hamble before the bridges.

That looks like a really good result. Can't really do any better.

 

[Plum]

The picture below is the first year I used SeaJet on my aluminium props, you can see how this looks after 1 year in the water especially compared to the legs.

Last year I also used SeaJet on the legs and after just over 1 year in the water there is only a brown slime on the legs and the props are still clean.
I am on the Hamble before the bridges.

Thanks for posting. Which Seajet antifouling? They do at least 4 types, and which primer?

 

[FatherTed]

Goog point......
It's 114 Base mixed with 114 hardener and then multiple coats of 034 for the top coat which I apply using a small roller.

Although the tin looks small it is enough to do 4 duo-props and 2 hubs.

 

[Greg2]

The picture below is the first year I used SeaJet on my aluminium props, you can see how this looks after 1 year in the water especially compared to the legs.

That looks excellent and way better than I have ever experienced and I used Seajet on our S34

Did the boat get a lot of use at sea during the year she was in the water following application of the anti-foul to the props?
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[FatherTed]

That looks excellent and way better than I have ever experienced and I used Seajet on our S34

Did the boat get a lot of use at sea during the year she was in the water following application of the anti-foul to the props?
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I expect prep is the key, I rubbed the props down with sandpaper, cleaned with acetone and then applied the epoxy. (2 coats)

I probably did at least 3 coats of the antifoul, since it had to be used up or thrown away.

The boat gets used only at the weekend, probably only 100 hrs for the year.

I will lift in April and update this thread as to what the outdrives look like, since this is the first year of using Seajet on the outdrives. This is the 3rd year of using Seajet on the props.

 

[Greg2]

Sounds as though you did a great job as it still being there after 100hrs is pretty good to my mind!

 

[petem]

Sounds as though you did a great job as it still being there after 100hrs is pretty good to my mind!

Absolutely, 95% of the challenge is getting the stuff to stay on beyond the first trip out!

 

[dsw]

Are propellers coatings any good, are they just for people that use their boats a lot or not a lot?

We have a fairline targa 47 gt

We run at mixed speeds either 8kts or 25kts

Are you just better off getting a mid season lift out or a diver?

some good sticky grease

 

[Plum]

Goog point......
It's 114 Base mixed with 114 hardener and then multiple coats of 034 for the top coat which I apply using a small roller.

Although the tin looks small it is enough to do 4 duo-props and 2 hubs.

View attachment 189506

and only £30 for that set of three! Seajet Triple-Pack | Force 4 Chandlery

 

[russ]

I buy just the two pack primer then a 2.5lt tin of Seajet 034. This does props, tabs and drives.
034 was £129 but will be enough for 3-4 years.
015 on patch priming the legs each year.

 

[Seastoke]

Do people put AF on bronze props and stainless shafts

 

[Greg2]

Do people put AF on bronze props and stainless shafts

We did last winter due to fouling the preceding season. Not done so previously but to be fair, whilst going to sea our permanent mooring has in fresh. We are now in a tidal river so probably brackish. Used Hammerite special metals primer followed by Velox. Seems to do okay during the season inasmuch as speed hadn’t really dropped off much but we stayed in this winter so haven’t seen what the shafts and props are like. Worth saying that we tend to cruise at 7-8 knots so was hoping this combination works - doubt it would on a planing boat.
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[Hurricane]

I've tried prop coatings and nothing works for us.
Our marina in Spain has quite aggressive growth - far more than anything in the UK.
We are all geared up for quick lift and washes (with acid) - the cost is quite low and we get a free lift/wash each year anyway.
So, I've given up with coating and just polish the props regularly - that way they clean easily when we pressure/acid wash.
Like this

 

[TonyR123]

+1 for propspeed

 

[jfm]

+1 for propspeed

+1 from me too. Great stuff.