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Basic information about bunkers MO-S5 and MO-S4

History of KVH Bohumín, z.s.:

Club KVH Bohumín, z.s. (Military History Club) (earlier Civic association KVH Bohumín) was founded in 2000. Its main objective is the reconstruction of the fortification MO-S5 "Na Trati". The building was with endeavor of KVH inscribed on the list of cultural monuments August 17, 2004 registration card here, and managed to save this unique object from filling. The object was to become a pillar of the bridge to Poland over the nearby motorway D1 (formerly D47). This year (2004) were also able to arrange with the club KVH Maxim reconstruction of the Battle of Liberation of Bohumín 1945. This demonstration was a great success. We also met two disasters: flooding of fortification in 2006 and a flood in 2010. In 2008 we managed to arrange the transfer of land under the building from the army to the city Bohumín. KVH Bohumín, z.s. has long term symbolic rent with Bohumín city.

History of fortifications in short:

bunker MO-S4 Šedá vila Bohumín When Adolf Hitler came to power the relations between Czechoslovakia and Germany greatly exacerbated . And given that the German military began arming ,which leads to a risk of attack . To build forts in our bordres in that time the Czechoslovak Republic was inspired by the Allied France and their Maginote line. The Maginote line is between France's and Germany's border. In the Czechoslovak Republic were considered other ways of defense, but they were rejected. Our country was ( and is) a very awkward shape (elongated from east to west) and the number of soldiers who would have to protect the frontier, was strongly beyond the republic's man count. Therefore, it was chosen solution of forts and the number of troops needed to defend the territory was reduced. In the Czechoslovak Republic, the fortification line was begin to build around the Bohumin (thus here) and should gradually be built around the country. The strategy of defense against invading Germany was such that we will gradually recede with attacking enemy from the west to east to Slovak mountains Beksydy. To avoid the enemy to raid from the north side (and after the Anschluss of Austria from the south ), were the fortifications on the northern side of the border bunker MO-S5 Na trati Bohumín with Germany more stronger. So-called heavy (should withstand up to several weeks) and on the west was built only light fortification (so called řopík). The whole country would gradually retreated and waited for help foreign allies (France, Russia). On the first building pads the Czech architects collaborated with the French, and therefore the local bunkers are atypical in compare with most remaining in the country. As the first object was built MOS-8 (December 1935). To the whole Bohumin pads includes objects from MOS-2 to MOS-8. A MOS-1 was not built to supposedly protest of the Polish government.

The main peculiarities of Bohumin objects are these:

  • up to 5-MOS and MOS-6 are all single-storey objects,
  • all wells are dug (instead of drilled, as it was the case with most objects later),
  • instead of two heavy machine guns in one loophole here were used two sinlge heavy machine guns model 35 (later "standard" model 37) each in its own loophole,
  • anti-tank gun is situated in a separate casemate, instead of one joint with machine guns, and is not coupled with a heavy machine gun (which is used for aiming and thereby conserve ammunition of cannon),
  • on the left side of the MOS-5 is built emergency exit. This solution is unique because emergency exits were built only in fortresses. Emergency exit serves for the case that underpass under the railway line was destroyed and the soldiers would be trapped in the object,
  • on MOS-4 is lowered not only the shaft with a cupola but also three other rooms (barracks, telephonist and a room for the commander of infantry bunker) approximately 90 cm,
  • garnet chutes are threaded, and their diameter is larger (about 5 cm),
  • part of object which holds bell "ear" is longer (but was later backed down because they reduce the area of the building, and the chances of any interference in the bombing),
  • etc.

On Bohumin's pad is a lot of peculiarities and uniqueness.

A few more words about the current state of the objects of Bohumin's construction pad:

  • object from MOS-8 to MOS-6 are plundered. It is easy to entry them. But it can be dangerous. They are located close to the motorway.
  • MOS-5 we reconstructs. In the building has been preserved quite a lot of original ventilation to about 60%. The infantry bunker is now in a state where they are recovered almost all the rooms (beds, telephones, ventilation, ...). It is equipped with two diesel-engines, electricity and water are finishing according to the original documentation. Completed are mocks of armored turrets (missing only interior equipment). In casemates are historic weapons.
  • MOS-4. There has been preserved almost all ventilation, especially missing equipment from room with filters. Reconstruction of the building is not yet in sight.
  • MOS-3 is converted into a civil defense shelter. In addition, there is no one interested in and will probably retreat mining gravel. When it will be pulled down into the water is not knowen yet.
  • MOS-2 is fenced by gardeners and they will not let you there. In addition, there are also dogs so you can not get there even illegal way. Inside was previously the majority of ventilation. This, however, began to lose and so we had to dismantle it to prevent that it would end up in the scrap.
  • And MOS-1 as we already wrote it was not build.
  • Towards Karvina is then followed catch hook from light fortification. This was to lead along the border until the Beskids.

Tables with main information about MO-S5 and MO-S4:

name: MO-S 5 "Na trati"
building pads: Bohumin
resistance: III. level
crew 43 men, 4 of them are artillery observers
weapons under concrete: both casemates are equipped same: 1 x anti-tank gun model 36 (solo), 2 x heavy machine gun model 37 (solo) and defense light machine gun model 26
weapons in armored domes: right part: heavy machine gun model 37
left part: light machine gun model 26
concreting: 19-24th and 25-29th July 1936
volume of concrete: 4 314 m3
number of filters: 2 on the right side and 2 on the left side
well: two digged water wells - 4,3m
notes: both parts are connected by connecting corridor. Left side has emergency exit and next to object is built under railway (road nowadays) passage for patrol.

name: MO-S 4 "Šedá vila"
building pads: Bohumin
resistance: III. level
crew 45 men, 4 of them are artillery observers
weapons under concrete: right casemate: 1 x anti-tank gun model 36 (solo), 2 x heavy machine gun model 37 (solo) and defense light machine gun model 26
left casemate: 1x anti-tank gun model 36 (solo) and defense light machine gun model 26
weapons in armored domes: both armored domes were equipped by light machine guns, in the first cupola were double of heavy machine guns and in the seccond copula was one heavy machine gun
concreting: 15-23rd March 1936
volume of concrete: 2 702 m3
number of filters: 3
well: digged water well - 7,6m
notes: in this object was situated radiostation. Object was permanently connected to the public power grid
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