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The tan growth on boats is what remains of micro-critters that attached themselves to the hull and subsequently died from the copper compounds in the paint. The adhesive these things generate is tenacious to say the least! Pretty much the only way to remove that coating of critters is by a diver guided pneumatic scrub-brush while waterborne, or power washing while in a dry dock. Same happens to slightly larger stuff like barnacles, though certainly not on such a large scale. Years back, Ed Tordahl did a really nice rendition of sea-scum on his USS Ullyses S. Grant. In reality, the micro-critters grow in splotchy colonies, with large gaps between them, and contact with things like fenders, camels, and tug boats tend to remove the coatings as the boats get moved around and moor. Maybe Ed could post a "show-and-tell" picture?? I think he did that paint job out of rattle cans, but I could be wrong! Please remember that Thresher had a relatively clean hull when she left the shipyard!! Maybe only a very light scum line along the waterline and a super light "dusting" on the lower quadrant of the upper hull-half, down to main axis. My USS Trepang was done depicting her condition about 1 month after a 3 month drydock period, wherein she was cleaned off very well. If I can find a pic and figure out how to attach it, I'll post one. Maybe.
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Last edited by wlambing; 10-28-2021, 10:31 AM. -
Working on a test piece...I think it needs to be more uniform. Less of the mask perhaps.
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Actually, with more layering, it will look really good.If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.Comment
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Who is John Galt?Comment
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Ok. I will give that a try.Comment
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Now you're cooking with gas. What kind of masking agent are you using, and how are you applying it?
DavidLast edited by He Who Shall Not Be Named; 10-28-2021, 06:16 PM.Who is John Galt?Comment
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The toothpaste and water you mentioned on your weathering and markings thread. Using a piece of sponge.
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I'm gonna try one more thing.Comment
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Bob had a Russian Kilo at the fling last month that was awesome as far as green grunge. It looked just like the boats they ran and thick too.“Of the 40,000 men who served on German submarines, 30,000 never returned.”Comment
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Ok, after some thought and a little research it sounds like bio-fouling can happen relatively quick all things considered. I know that THRESHER spent about 9 months in a post shakedown availability prior to her fateful voyage. That being said we don't know how long it was in the drydocks and how long it was dockside prior to sailing. This is 5 layers of three different colors of tan paint. I can certainly add more but wanted to get an opinion on it at this point. I still need to address the waterline scum but wondering if this somewhat simulates say perhaps several months of being dockside?
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