Maunsell forts

Här diskuteras allt det som berör Andra världskriget i allmänhet.
Skriv svar
Användarvisningsbild
Trismegistus
Hedersmedlem
Hedersmedlem
Inlägg: 2740
Blev medlem: 16 dec 2005 20:27
Från: Västmanland
Militär Grundutb: Luftvärnet
Intresse: Samlande
Ort: Västerås
Kontakt:

Maunsell forts

Inlägg av Trismegistus » 10 jan 2016 11:02

Tänkte dela med mig av lite bilder av de s.k. Maunsell-forten som byggdes i Nordsjön för att skydda mot tyskt flyg.
Först lite bilder av s.k. "Maunsell army forts" (bemannades av armén), bestående av 7 sammankopplade stålkonstruktioner ståendes på 4 "ben":
29751.jpg
120 foot Maunsell anti-aircraft forts for use in the Mersey Estuary under construction at Bromborough Dock. Here they are well on the way to completion with the accommodation block fitted to the four long legs that will rest on the sea bed.

29753.jpg
120 foot Maunsell anti-aircraft forts for use in the Mersey Estuary under construction at Bromborough Dock. Here the partially completed accommodation block has been fitted to the four long legs that will rest on the sea bed.

44565.jpg
Maunsell sea fort in the Thames Estuary, manned by Anti-Aircraft Command crews, seen from an approaching supply boat, 19 November 1943.

44566.jpg
Anti-aircraft crews scan the sky from a Maunsell sea fort in the Thames Estuary, 19 November 1943.

463485.jpg
Britain's River Anti Aircraft Forts. Bromborough Dock, 8 December 1942, during the Construction of 120 ft Maunsell Anti-Aircraft forts for use in the Mersey Estuary.

463486.jpg
Muansell Towers from above.

463487.jpg
Forts under construction.

463488.jpg
Forts as seen from below.

463489.jpg
Forts as seen from below.

edit: stavfel
Senast redigerad av 2 Trismegistus, redigerad totalt 10 gång.

Användarvisningsbild
Trismegistus
Hedersmedlem
Hedersmedlem
Inlägg: 2740
Blev medlem: 16 dec 2005 20:27
Från: Västmanland
Militär Grundutb: Luftvärnet
Intresse: Samlande
Ort: Västerås
Kontakt:

Re: Maunsell forts

Inlägg av Trismegistus » 10 jan 2016 11:15

Sedan har vi Maunsell naval forts, vilka bemannades av Royal Navy och mer var en militär bunker i betong som bestyckades och bemannades för att sedan fullt utrustad bogseras ut till havs och sänkas i havet på den tilltänkta platsen. Som synes på den nedersta bilden så utnyttjade man även fundamentens 7 våningar för att härbärgera besättningen.
31021.jpg
Sea forts in the Thames Estuary: A completed pontoon that will form the base of a sea fort to be used in the Thames Estuary. The first pre-assembled reinforcing grids of the twin towers are in place and the pontoon is lying on the mud in No 1 berth. Later it was floated on the tide to a dock basin. These secret forts were an effective defence against attacks by sea and air on the estuary.

31022.jpg
Maunsell Sea forts in the Thames Estuary: In the dock basin the twin towers of a sea fort to be used in the Thames Estuary are rapidly rising from the floating pontoon. A pre-assembled spot welded cage is hoisted into position, and the concrete is poured between a permanent wooden inner wall and an outer steel shell. Then the steel shell is moved up and the next cast is made. These secret forts were an effective defence against attacks by sea and air on the estuary.

31023.jpg
Sea forts in the Thames Estuary: Hoisting into position the pre-assembled cage of reinforcement for the towers. These secret forts of the Thames Estuary were an effective defence against attacks by sea and air on the estuary.

31024.jpg
Sea forts in the Thames Estuary: Putting in the floors of each section of the towers. A pre-cast reinforced "biscuit" (they were actually turned out like biscuits, one on top of another, with brown paper separating each) is attached to a steel spider and lifted into position, Then the spider is unscrewed and attached to the next floor. These secret forts of the Thames Estuary were an effective defence against attacks by sea and air on the estuary.

31025.jpg
Sea forts in the Thames Estuary: The completed fort with its steel superstructure, guns and personnel is towed to sea. The four feet high wooden bulwarks around the pontoon were removed before sinking the fort. The reinforced concrete cylinder on the pontoon bow was later rolled off and suspended by wires under the bow, when the fort was grounded this cylinder was crushed and thus broke the impact on the sea bed. These secret forts of the Thames Estuary were an effective defence against attacks by sea and air on the estuary.

31026.jpg
Sea forts in the Thames Estuary: The fort in position and ready for action. Air is still seen escaping from the sea cocks as further consolidating water ballast enters the pontoon base. One of the forts was actually in action half an hour after being put into position. These secret forts of the Thames Estuary were an effective defence against attacks by sea and air on the estuary.

31027.jpg
Sea forts in the Thames Estuary: A close up of the fort manned. The crew are at the alert around a 40 mm Bofors gun. These secret forts of the Thames Estuary were an effective defence against attacks by sea and air on the estuary.

504198.jpg
Mail being hauled up to one of the forts from the drifter STRATHMAREE.

504199.jpg
One of the forts situated in the North sea, known as UNCLE ONE.

504200.jpg
The Commanding Officer of one of the forts, SUNK HEAD FORT, Lieut J N Edwards, RNVR (left), from Motherwell, Scotland, and Lieut M W C Hibbitt, RNVR ("Guns"), who was a schoolmaster at Brighton before the war. This fort's guns have accounted for four enemy aircraft.

504201.jpg
The drifter STRATHMAREE approaching one of the Forts (UNCLE ONE) with supplies and stores.

504202.jpg
The Commanding Officer of SUNK HEAD Fort addressing some of the ship's company including Royal Marines before they go on leave

506859.jpg
Marines man "island forts" to protect Britain's east coast shipping in the north sea from low flying enemy aircraft. These forts are commissioned as HM ships and are called after the sands on which they stand. Here four enemy aircraft destroyed by SUNK HEAD Fort's guns are recorded by swastikas on the side of the "Bridge". The fourth one is being painted on by a member of the fort's crew.

520667.jpg
The towers of the forts were built on a reinforced concrete pontoon. Here the pre-assembled cage of reinforcement for the pontoon floor is being placed in position.

520668.jpg
The completed fort with its steel superstructure, guns and personnel is towed to sea. The four feet high wooden bulwarks around the pontoon were removed before sinking the fort. The reinforced concrete cylinder on the pontoon bow was later rolled off and suspended by wires under the bow, when the fort was grounded this cylinder was crushed and thus broke the impact on the sea bed.

200887.jpg
Forts of this type were designed to fulfil several roles during the Second World War, namely to break up enemy aircraft formations approaching London from the sea, to prevent the laying of mines in the navigable channels, to prevent E-Boats from raiding shipping, and to provide early warning of approaching hostile air or sea forces by means of radiolocation. They were built at riverside sites on the Thames and floated out to their locations in the Estuary, where they were flooded and settled on the sea bed. Each of the towers was 24 feet in diameter, 60 feet high, and had 7 internal decks, A total of 4 forts of this type were deployed in the Thames Estuary, in the area colloquially known as "E-Boat Alley", and were manned by a crew of Marines and Bluejackets, numbering 100 officers and men.

Användarvisningsbild
Waldo
Kapten
Kapten
Inlägg: 1492
Blev medlem: 03 sep 2006 19:11
Kön: Man
Från: Uppsala
Militär Grundutb: Frisedel
Intresse: Andra världskriget
Ort: Uppsala
Kontakt:

Inlägg av Waldo » 10 jan 2016 19:48

Intressant! Något iaf. jag aldrig hört talas om.

Sonderling
1:e Sergeant
1:e Sergeant
Inlägg: 308
Blev medlem: 19 jul 2013 07:33
Kön: Man
Från: Stockholm
Militär Grundutb: Annat
Intresse: Andra världskriget
Kontakt:

Inlägg av Sonderling » 10 jan 2016 21:21

Häftigt!
Jag har sett nutida bilder på den översta typen, de står ännu om än lite väderbitna.

(Undrar varför inget modellföretag har gjort dessa och tyska flakturm som modellbyggsatser? Det skulle vara fränt.)

Tillägg: https://en.wikipedia.org/wiki/Maunsell_Forts

Såg detta på Wikipedia, och blev påmind om detta med micronationen Sealand... :skratt:

Sonderling

Användarvisningsbild
Trismegistus
Hedersmedlem
Hedersmedlem
Inlägg: 2740
Blev medlem: 16 dec 2005 20:27
Från: Västmanland
Militär Grundutb: Luftvärnet
Intresse: Samlande
Ort: Västerås
Kontakt:

Re: Maunsell forts

Inlägg av Trismegistus » 10 jan 2016 21:39

Det jag blev mest fascinerad av var just det faktum att man i princip gjorde forten stridsberedda innan man bogserade ut dom till havs och sänkte ner dom i havet på sin tilltänkta plats. Lutningen på bilden nedan är ju ganska kraftig och man ser ju folk längst till vänster uppe på däck som man förmodar håller i sig för glatta livet.

Man kan ju misstänka att det fanns många soldater ombord som trots allt höll tummarna för att bogserbåtarna läst koordinaterna rätt så att de inte sänktes ute på för djupt vatten. :D
520668.jpg

Användarvisningsbild
Horrocks
Fänrik
Fänrik
Inlägg: 872
Blev medlem: 30 jan 2010 01:21
Från: Stockholm
Militär Grundutb: Ingenjör
Intresse: Generellt intresse
Kontakt:

Re:

Inlägg av Horrocks » 11 jan 2016 09:25

Sonderling skrev:Häftigt!
(Undrar varför inget modellföretag har gjort dessa och tyska flakturm som modellbyggsatser? Det skulle vara fränt.)
Sonderling
Funderade precis också på det - de är fantastiska förebilder till en modell. I skala 1/72 borde det vara praktisk möjligt - ett Army fort verkar vara 24m högt, dvs ca 33 cm i 1/72.
Everyone's a pacifist between wars. It's like being a vegetarian between meals.

Skriv svar

Vilka är online

Användare som besöker denna kategori: 5 och 0 gäster