A couple of questions about Kaarnajoki battery

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Eugenius
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A couple of questions about Kaarnajoki battery

Post by Eugenius » 17 Apr 2021 16:20

Terve guys. Hope you are doing well ans stay healthy. I think Kaarnajoki battery is well-known, but 2 questions arose before our next trip there:

There are steel tubes of ca. 70 - 80 cm high installed right in the centre of each gun basement - what those tubes are for? First idea: electric and communication lines for the gun. Another idea - compressed air for barrel blowdown after shot, but was this technique used by the Finns at that time?

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Another question arose concerning quite unusual red-brown colour used for painting the gunpits. Was it traditional Finnish Keittomaali to prevent mold formation on the walls due to high humidity or to remind Finnish artillerymen their homes? Another idea is this colour somehow reduced battery's visibility from the air, but why some inner rooms like corridors are also painted (but some others are not)?

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I would be thankful if your share your ideas.
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Juha Tompuri
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Re: A couple of questions about Kaarnajoki battery

Post by Juha Tompuri » 25 Apr 2021 20:44

Eugenius wrote:
17 Apr 2021 16:20
Terve guys. Hope you are doing well ans stay healthy. I think Kaarnajoki battery is well-known, but 2 questions arose before our next trip there:

There are steel tubes of ca. 70 - 80 cm high installed right in the centre of each gun basement - what those tubes are for? First idea: electric and communication lines for the gun. Another idea - compressed air for barrel blowdown after shot, but was this technique used by the Finns at that time?
Hi!
Heathly, at least by so far.
Thanks for sharing the photos.
I think your first idea might the correct one.

Another question arose concerning quite unusual red-brown colour used for painting the gunpits. Was it traditional Finnish Keittomaali to prevent mold formation on the walls due to high humidity or to remind Finnish artillerymen their homes? Another idea is this colour somehow reduced battery's visibility from the air, but why some inner rooms like corridors are also painted (but some others are not)?
I must say, that I haven't seen such painting at the gunpits I've visited.

Regards, Juha

ML
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Re: A couple of questions about Kaarnajoki battery

Post by ML » 01 May 2021 20:20

There are steel tubes of ca. 70 - 80 cm high installed right in the centre of each gun basement - what those tubes are for? First idea: electric and communication lines for the gun. Another idea - compressed air for barrel blowdown after shot, but was this technique used by the Finns at that time?
I checked my photos of some empty Canet positions. There are remains of such pipes/tubes inside bolt circles also at Ulko-Tammio and Sarsuinmäki. So, at least positions built during interim peace and Continuation war have them. I don't know the purpose of pipes.

Ulko-Tammio.JPG
Sarsuinmaki.JPG

Image at http://slnres.net/media/tykkiprojekti009.jpg shows Canet position at Tanhuvaara, Savonlinna, which also has a tube.

SA-kuva 106255 shows empty position at Kaarnajoki in August 1942, but not the gun base.
Sa-kuva_106255_Kaarnajoki_1024.jpg

Old Russian drawing of flat Canet base doesn't have such a tube: http://digi.narc.fi/digi/view.ka?kuid=18737419
Canet-ty_1_1024.jpg
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Eugenius
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Re: A couple of questions about Kaarnajoki battery

Post by Eugenius » 03 May 2021 16:07

Many thanks to everyone for the comments. It's strange, but I did not get notifications on new posts in this topic.

I checked my files and found the same pipes in the gun basement of Finnish 6 in gun on Gogland (Suursaari):

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As far as I may say, Russian and Soviet Canet had no such pipes in basements. So it looks to be a kind of Finnish modernization.

Concerning red paint - just yesterday I saw definitely Finnish object of unknown purpose with remnants of the same paint:

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By the way, any idea of what it might be?
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Seppo Koivisto
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Re: A couple of questions about Kaarnajoki battery

Post by Seppo Koivisto » 03 May 2021 17:41

Maybe the color is due to red algae (Trentepohlia iolithus), sometimes incorrectly called in Finnish punajäkälä.
https://themaintenancecorner.com/2019/0 ... om-render/
https://yle.fi/uutiset/3-6587324
https://www.delete.fi/blogi/punajakalak ... kisivusta/

Eugenius
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Re: A couple of questions about Kaarnajoki battery

Post by Eugenius » 03 May 2021 17:49

Well, probably for unknown construction this is the correct explanation of red stains, but Kaarnajoki battery casemates were obviously painted (though not quite accurately) in this red-brown colour.

ML
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Re: A couple of questions about Kaarnajoki battery

Post by ML » 03 May 2021 20:08

I checked my files and found the same pipes in the gun basement of Finnish 6 in gun on Gogland (Suursaari):
I forgot to check Suursaari photos... Yes, there are pipes at Lounatkorkia gun bases, too.
Suursaari_Lounatkorkia.JPG
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