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View Full Version : Question Re. SSN 688 model

schurem
06-19-17, 03:40 AM
Hey guys, I am looking at my beautiful boat, the USS Olympia and I was wondering about two little details on her model. What are the coppery shiny surfaces on her back? Are they windows of some kind?
FPSchazly
06-19-17, 10:12 AM
I, too, have wondered what these things are. I do not think they are windows.
Berserker
06-19-17, 12:27 PM
Only iranian subs have windows and screen doors...:D
PL_Harpoon
06-19-17, 12:39 PM
Russians have them too:
https://www.slavorum.org/wp-content/uploads/2014/12/1_012.jpg

https://s-media-cache-ak0.pinimg.com/originals/15/ef/aa/15efaa01f677c137c72e66fdbd87c561.jpg
FPSchazly
06-19-17, 12:43 PM
Yes, those windows are outside the pressure hull, though. The "ones on American subs" that we're talking about wouldn't be.
PL_Harpoon
06-19-17, 12:46 PM
Yeah, I don't think they're windows too. What's strange is that I couldn't find any RL pictures of those things (at least not on 688 class)

EDIT.

Just found this picture:
http://modelkitsreview.com/wp-content/uploads/2013/02/moebius-skipjack-submarine-7.jpg
fhog
06-19-17, 01:04 PM
Yeah, I don't think they're windows too. What's strange is that I couldn't find any RL pictures of those things (at least not on 688 class)

EDIT.

Just found this picture:
http://modelkitsreview.com/wp-content/uploads/2013/02/moebius-skipjack-submarine-7.jpg

Good find! I was curious to find out about the zinc plates.
FPSchazly
06-19-17, 01:14 PM
Good find, indeed!
The Bandit
06-19-17, 07:00 PM
Are you talking about the sacrificial zinc anodes near the screw? They are there to prevent the brass from literally being eaten by the seawater.
strykerpsg
06-19-17, 10:48 PM
Are you talking about the sacrificial zinc anodes near the screw? They are there to prevent the brass from literally being eaten by the seawater.

Interesting tidbit of info...thanks. had no idea that was even an issue, let alone the fix.
Jacke
06-20-17, 10:43 AM
Sacrificial zinc anodes are almost universal on all boats with metal in contact with the water. It focuses corrosion on the zincs.
cj95
06-21-17, 01:22 AM
I am fascinated by the zinc plates. How exactly does this work?

Does it change the chemistry of the water? How does this work while the sub is moving and water is constantly being swept away?

.
max-peck
06-21-17, 08:02 AM
Colloquially knows as 'Zincs'

Further reading
http://www.boatsafe.com/nauticalknowhow/012000tip3.htm