New(?) Anti-corrosive

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billblack

billblack

Member
Joined
Feb 16, 2016
Messages
18
Location
USA
Vessel Name
Sampson
Vessel Make
1987 trawler by Freeport Shipbuilding, Freeport Florida
A young man that has worked with us for the last two treasure diving seasons is in Navy ROTC and came back from his summer cruise aboard a Navy vessel telling me about a line of corrosion control products from a company (Valkyrie Enterprises) that sells it under the Ship 2 Shore label that are being used by the US Navy. There are several different products in this lineup . The two products that our guy saw being used were "Sailor Putty" and S2S CPC 500. They can b applied over rust and are said to completely stop the rusting process.
Has anyone used these products? If so, how has it performed?
We are presently refurbing an 85' trawler built in 1987 (picture below) and have more than one place that a product that does what these products are claimed to do would be a godsend.
Thanks in advance for any help!


Sampson Starboard.jpg
 
Wow, you do like big projects don't you, lol.

The Navy knows rust so I would imagine if they are using something it likely works. A cousin of mine, now retired, was a engineer that specialized in rust. He spent lots of time trying to help the Navy's submarines not rust.
 
dhays said:
Wow, you do like big projects don't you, lol.
Click to expand...
Yes, I do, but in my defense I have been building up to this for a while. The last one was a 38 Bertram sportfish. 5 years after I finished that one, I had forgotten just how much 'fun' was to be had in a project like this, so here we are.
The GOOD news is that Sampson was built out of Corten so there is not as much corrosion as there could be. :) but yes... it is like refurbishing a 5 bedroom house that rusts...

Showdown - 38' Bertram treasure dive boat
Showdown Ft P.jpg
 
There are a bunch of rust converters on the market. The oil industry has been using them for decades. The one I use works pretty well. It is called Exrend.
 
work, we have local made similar .he penetrate form rust paint and go under paint .
this use only for stop spreading rust. preparation for painting
price is 6-10€ liter .but is really miracle , base is phosphorus acid + another complex chemical.
 
Last edited:
Reminds me of fluid film. I looked at the website and couldn’t find any actual p sheet or msds sheets.
 
No real information regarding ingredients. Just a lot of claims. Likely a lanolin based product. I’ve used fluid film to prevent bare metal from rusting outdoors with good luck, this might work the same. Treated metal must be cleaned before painting though, and that can be tough.
I’ve also had great luck on surface corrosion with picklex-20. It’s the best converter I’ve ever found, and I’ve tried quite a few. You can also store treated metal outside without further rust forming.
Good first coatings after treatment would be rustoleum rusty metal primer or zero rust. Both are excellent products.
 
Sounds like the Militech sales hype, name implying that the military endorsed the product, which seems to be snake oil at best!
 
The best thing I have found for long term steel protection is zinc coating. It's done with a wire gun using electricity or oxy/act. I had a couple ex-navy tugs that had been coated 20+ years before. No rust at all except where lines had wore thru the coating. I bought a Metco gun and recoated as needed. Later building some commercial fishing boats, I coated everything, inside and out, except for the diesel tanks. Those I used a tank coating. Zinc and diesel doesn't mix. Those boats are still rust free except where gear has worn.
 
For conversion of rust I've used Ospho for years with excellent results.

In my opinion the best corrosion inhibitor, bar none, is CRC Heavy Duty Corrosion Inhibitor, it cannot be washed or brushed off, it dries to a waxy, slightly tacky film (but not messy, it won't come of if touched) that has considerable resistance to weather, and water, it is my go to rust inhibitor.
 
We always had good luck with OSPHO - Ospho Rust Treatment - Since 1947 Use whatever is appropriate to get rid of any lose scale, then "paint" on the OSPHO. After it dries you can cover it with a rust-proofing paint for extra protection.
 
In the Navy- Rust keeps a lot of young sailors busy and out of trouble when at Sea. Not sure they really want to find a long-term solution to this problem :)
 
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