Uploaded July 2025 | Updated September 2026, 1 week ago
Top secret cold war coastal artillery fortress museum - naval artillery bunker.
Built into the rock below Oxelosund in Sweden is a huge nuclear safe bunker, from which 70 soldiers could defend this part of Sweden with 3 guns against an invasion from the Soviet Union and the Warzaw Pact during the cold war. You can visit the guns both above and below ground. Over 450 meters of tunnel system links the different parts within the fortress, which is protected by 10-30 meters of granite and concrete.
The fortress is open with guided one hour tours daily in summer season and weekends during spring and autumn. Groups are welcome all year round. There is a small café and museum shop with souvenirs and cold war books at the fortress. Information:
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Video/editing: Jukka O. Kauppinen
(C) Tankspotting / Mediapalvelut 2024-2025
mediapalvelut.fi
Shown in the video are Värnkanon m/74. The Värnkanon at Ljungholmen was in place from the 1970s until the end of the 1990s and was tasked with defending the entrance to Oxelösund harbor and the mining at Ljungholmen.
Facts: The m/74 defensive gun had a caliber of 7.5 cm and consisted of the turret from decommissioned tanks of the Stridsvagn 74 tank.
As part of the self-defense of the Femöre Battery (Femöre Fort), so-called dummy targets were included in the war organization, including two dummy guns and a dummy radar.
The intention of these was to trick an attacker into attacking the dummy targets instead of the real ones.
The dummy pieces would be placed so that they were visible from the sea, while the sharp pieces would be camouflaged as much as possible.
The tracking radar was placed visibly at the Lighthouse Residence, while the sharp radar was to be used inside the weather shelter and camouflaged with netting.
Oxelösund Tourist Information: turism@oxelosund.se
https://www.femorefortet.se/Femorefortet-eng.htm
Facts about The Femore Fortress
• A top secret Cold War coastal artillery bunker, built in 1966, in operation until 1998 and abandoned in 2003.
• With it’s three 7,5 cm Bofors guns, it could operate against enemy ships or troops at a range of 13 km.
• Over 1800 shells have been fired by the fortress during practice.
• The fortress is fully protected against a close hit by a Hiroshima size nuclear explosion.
• The fortress had a 70 men crew and was self-sufficient with enough water, food and fuel for at least 30 days.
• Over 450 meters of tunnel system links the different parts within the fortress.
• The fortress is since 2003 a museum showing the coastal defense in Sweden during the Cold War. Multiple walking paths will show the nature and the surface parts of the fortress. The museum is run by the Femorefortet society.
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Top secret cold war coastal artillery fortress museum - naval artillery bunker.
Built into the rock below Oxelosund in Sweden is a huge nuclear safe bunker, from which 70 soldiers could defend this part of Sweden with 3 guns against an invasion from the Soviet Union and the Warzaw Pact during the cold war. You can visit the guns both above and below ground. Over 450 meters of tunnel system links the different parts within the fortress, which is protected by 10-30 meters of granite and concrete.
The fortress is open with guided one hour tours daily in summer season and weekends during spring and autumn. Groups are welcome all year round. There is a small café and museum shop with souvenirs and cold war books at the fortress. Information:
Tankspotting (TV) is dedicated for the heavy metal battlefield. If you enjoy tanks and other awesome things then please subscribe - just click here:
youtube.com/user/Tankspotting?sub_confirmation=1
Video/editing: Jukka O. Kauppinen
(C) Tankspotting / Mediapalvelut 2024-2025
mediapalvelut.fi
Shown in the video are Värnkanon m/74. The Värnkanon at Ljungholmen was in place from the 1970s until the end of the 1990s and was tasked with defending the entrance to Oxelösund harbor and the mining at Ljungholmen.
Facts: The m/74 defensive gun had a caliber of 7.5 cm and consisted of the turret from decommissioned tanks of the Stridsvagn 74 tank.
As part of the self-defense of the Femöre Battery (Femöre Fort), so-called dummy targets were included in the war organization, including two dummy guns and a dummy radar.
The intention of these was to trick an attacker into attacking the dummy targets instead of the real ones.
The dummy pieces would be placed so that they were visible from the sea, while the sharp pieces would be camouflaged as much as possible.
The tracking radar was placed visibly at the Lighthouse Residence, while the sharp radar was to be used inside the weather shelter and camouflaged with netting.
Oxelösund Tourist Information: turism@oxelosund.se
https://www.femorefortet.se/Femorefortet-eng.htm
Facts about The Femore Fortress
• A top secret Cold War coastal artillery bunker, built in 1966, in operation until 1998 and abandoned in 2003.
• With it’s three 7,5 cm Bofors guns, it could operate against enemy ships or troops at a range of 13 km.
• Over 1800 shells have been fired by the fortress during practice.
• The fortress is fully protected against a close hit by a Hiroshima size nuclear explosion.
• The fortress had a 70 men crew and was self-sufficient with enough water, food and fuel for at least 30 days.
• Over 450 meters of tunnel system links the different parts within the fortress.
• The fortress is since 2003 a museum showing the coastal defense in Sweden during the Cold War. Multiple walking paths will show the nature and the surface parts of the fortress. The museum is run by the Femorefortet society.
--
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![SPG Artillery K9 Thunder Moukari 155 SPG Howitzers Firing In Forest [4K]](https://i.ytimg.com/vi/sXhc14j3ZO4/mqdefault.jpg "SPG Artillery K9 Thunder Moukari 155 SPG Howitzers Firing In Forest [4K]
[4K] Finnish army K9 Thunder (Moukari) SPG 155 mm mobile artillery fire mission.
Video: Jukka O. Kauppinen
Editing: Jukka O. Kauppinen
(C) Tankspotting / Mediapalvelut 2024
http://www.mediapalvelut.fi
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K9 Thunder Moukari
In July 2016, the Finnish Ministry of Defence announced that an undisclosed number of used K9s have been selected to be acquired from the Republic of Korea. The acquisition is claimed to be biggest of the decade for the Land Forces, whose both mobile and towed artillery face mass outdating in the 2020s. In February 2017, the Ministry of Defence announced that Finland will acquire 48 used K9s over a period of seven years starting in 2018, with conscript training on the equipment commencing in 2019. In November 2022 Finland announced to buy 48 more K9s. After delivery of all weapons Finland will have 96 K9 SPGs.
The K9 Thunder is a South Korean self-propelled 155 mm howitzer developed by Samsung Techwin for the Republic of Korea Armed Forces and now manufactured by Hanwha Land Systems. It was developed to supplement and then replace the K55 self-propelled howitzers in South Korean service.
K9 is an indigenous system of an all-welded steel armour construction which is rated to withstand 14.5 mm armour piercing rounds, 152 mm shell fragments, and anti-personnel mines. The main armament consists of a 155 mm/52 caliber ordnance with a maximum firing range of 40 km; the K307 BB-HE projectile propelled by the K676 top charge has a muzzle velocity of 928 m/s (3,040 ft/s). State-of-the-art mobility subsystems include a 1,000 horsepower (750 kW) engine with potential for growth and hydropneumatic suspension unit, a requirement for Koreas rugged mountainous terrain.
Mass 47 tonnes
Length 12 m
Width 3.4 m
Height 2.73 m
Crew 5 (Commander, Driver, Gunner, 2 Loaders)
Maximum firing range 30,000 m (HE)
38,000 m (DP-ICM base-bleed)
41,600 m (K307 Drag reduction. Extended range full-bore base-bleed) 52-56,000 m.
Main armament 52 cal (155mm howitzer)
Secondary armament 12.7 mm (.50 caliber) K6 HMG
Engine MTU Friedrichshafen MT 881 Ka-500 8-cylinder water-cooled diesel engine 1000 hp
Power/weight 21 hp/ton
Transmission S&T Dynamics X1100-5A3
Suspension hydropneumatic
Operational range 480 km
Speed 67 km/h
K9 Thunder on Korean tasavallassa Samsung Aerospace Industriesin ja Korean tasavallan asevoimien vuosina 1989-1998 kehittämä ja 1999 sarjatuotantoon otettu raskas panssarihaupitsi, jonka valmistaja on nykyään nimeltään Hanwha Land Systems. Se on kehitetty aluksi täydentämään amerikkalaiseen M109-panssarihaupitsiin pohjautuvaa korealaista K55-panssarihaupitsia, ja myöhemmin korvaamaan sen kokonaan. K9-panssarihaupitsit muodostavat laajemman tykistöasejärjestelmän samaan alustaan pohjautuvien panssaroitujen K10-latausvaunujen kanssa, jotka kykenevät kuljettamaan lisäammuksia yli kahden K9-panssarihaupitsin ammustäytön verran.
Heinäkuussa 2016 Suomen puolustusministeriö kertoi hankkivansa tuntemattoman määrän K9 Thunder -panssarihaupitseja Maavoimille. Hankinnan väitetään olevan suurin 2020-luvulle tehtävistä vanhan kaluston korvaamisista. Marraskuun lopulla Rovajärvellä pidetyssä Maavoimien vaikuttamisharjoituksessa (MVH16) oli testissä K9 Thunder. Testin tuloksiin ollaan tyytyväisiä. Myöhemmin määräksi tarkentui 48 yksikön telahaupitsin tilaus. Marraskuussa 2022 Suomi ilmoitti ostavansa 48 yksikköä lisää. Toimitusten päätyttyä Suomella on 96 K9-panssarihaupitsia.
#tankspotting #k9thunder #siivetwings
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![T-34/85 Walkaround - Soviet WW2 Main Tank With 85 mm Gun - Arsenalen [2.7K]](https://i.ytimg.com/vi/t5nemSS2YAA/mqdefault.jpg "T-34/85 Walkaround - Soviet WW2 Main Tank With 85 mm Gun - Arsenalen [2.7K]
[2.7K] Soviet medium tank T-34/85 walkaround at Arsenalen, Sweden.
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Video/editing: Jukka O. Kauppinen
(C) Tankspotting / Mediapalvelut 2018-2025
http://www.mediapalvelut.fi
More videos from Arsenalen:
https://www.youtube.com/playlist?list=PLoVrkyzq81gRbrglqzN5r85gnRXclS0O1
More T-34: https://www.youtube.com/playlist?list=PLoVrkyzq81gRnXggHOjdaBF2R8-TZQk6r
T-34/85
Finnish use: Seven tanks were taken to Finnish use during Continuation War. First T-34/76 was taken to Finnish use in October of 1941. The last of these tanks remained in Finnish use until year 1961. The tanks were both captured in combat and brought from Germany.
Finnish estimates and experiences:
Early Finnish estimate of T-34 tank: Armour quite adequate, diesel-engine works reliably even in winter, speed quite adequate - apparently the tank has a good off-road mobility. Our troops have succeeded destroying these tanks with satchel charges thrown to rear deck. Tank crew has poor visibility outside, tank tracks can be broken with satchel charges, antitank-mines or with 37-mm antitank-guns. 45-mm antitank-gun can penetrate lower side hull armour between road-wheels or if the tank is tilted suitably (turning sloped side hull armour into vertical position) it can penetrate also higher side armour.
Finnish tank crews found T-34/76 to obviously be a massive improvement over earlier tanks like T-26E and captured Soviet T-26. Not only was its 76-mm tank gun much more effective and armour protection useful against Soviet antitank-weapons, but thanks to wide tracks, powerful diesel engine and showed good mobility in typical Finnish terrain and also deep snow. Unlike with light tanks even individual tree or two were no real obstacle, since T-34 was found capable knocking down trees less than 80-cm thick. Since the number of captured T-34 tanks taken to Finnish use remained always very limited, it seems likely that most capable crews were handpicked for them. As mentioned the first three T-34 tanks taken to Finnish use were issued to Heavy Tank Company of Tank Battalion and when the Battalion was expanded to Brigade, they went to 3rd Tank Company (1st Battalion) of Tank Brigade. When additional T-34 tanks were received in summer of 1944 also they ended up to this tank company.
Weight: 32.0 tons
Length: 6.10 meters (about 7.5 meters with gun)
Width: 3.00 meters
Height: 2.60 meters
Max. Speed: 55 km/h on road
25 km/h off road
Engine: 500hp V-2 12-cylinder diesel engine
Weapons:
85 mm ZiS-S-53 (L/51.5) tank gun (56 rounds)
2 x 7.62 mm DT machinegun, coaxial and hull (1.827 rounds)
Crew: 5 men
Production: 1940 - 1944, total number manufactured about 34,780 tanks.
About Arsenalen:
The Swedish Tank Museum – Showing the military vehicle development, as well as the military history of Sweden, from the early 20th century until today. The museum also includes a very special exhibition of tin figures, as well as a soldier’s croft dating back to the 17th century, where an accompanying exhibition tells you about a bygone era.
The museum was inaugurated June 17, 2011 and is open year round. Run by a private foundation – Foundation Södermanland Military History collections. The vehicles belong to the Swedish Government – the Swedish National Museums of Military History. The vehicles were previously located to the Tank Museum in Axvall and Military Vehicle Museum in Malmköping. The collection includes about 350 vehicles, of which about 75 are on display in the museum. Some parts of the exhibition changes each year.
Beside the museum there is an original soldiers croft from late 19th century with an accompanying exhibition, The Soldier and the Croft. An exhibition about the history of the local Regiment (Södermanland regiment) tell the story from 14thcentury until 2005 when the regiment was closed. The figure museum is a private collection which previously existed as a museum in Hjortnäs in Dalarna.
https://arsenalen.se/en/about-us/
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