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Type 206A Submarine Walk  Around (2011)
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The Type 206 is a class of diesel-electric submarines (U-boats) developed by Howaldtswerke-Deutsche-Werft AG (HDW). Its design is based on the preceding Type 205 submarine class. These small and agile submarines were built during the Cold War to operate in the shallow Baltic Sea and attack Warsaw Pact shipping if the war turned hot. The pressure hulls were built out of non-magnetic steel to counter the threat of magnetic naval mines and make detection with MAD sensors more difficult.

Programme
Ten Type 205 submarines were constructed between 1962 and 1968 with hulls constructed of a new non-magnetic steel. The early boats, however, suffered from ***ing due to stress corrosion and an urgent programme was initiated to develop a new steel which overcame these problems, which received much publicity at the time. The new high-strength, non-magnetic, austenitic steel has greater elasticity and good dynamic strength, and has proved very satisfactory in service, thoroughly overcoming the doubts that were raised by those early problems, although it has never been selected by IKL's many export customers and thus remains unique to German Navy submarines. Subsequently, the Type 206 was designed by IKL in 1964-65 and a production order was placed on 7 June 1969 for eight from Howaldtswerke Deutsche Werft (HDW) in Kiel and ten from Rheinstahl Nordseewerke in Emden.

Of the 18 submarines built for the Bundesmarine (West German Navy), 12 were modernized in the early 1990s and were re-designated as Type 206A; the others have been decommissioned. The current German Navy is starting to decommission some 206A vessels, with more of the new Type 212 submarines being commissioned. In June 2010 the Ministry of Defence announced that all six remaining vessels were to be retired from active service immediately and to be decommissioned by the end of 2010 to cut costs.

A slightly modified variant of the Type 206 (which includes the distinctive dome, or bulge, in the front of the boat), the Gal-class submarine for the Israeli Navy was built to Israeli specifications as the Vickers Type 540 in the UK rather than Germany for political reasons. Three such boats were built, the first being commissioned in 1976. When the Israeli navy received its new Dolphin-class submarines (also built by HDW), the Gals were retired. As of 2006, one had been scrapped and two had been sent to HDW in an attempt to find a buyer for them. When no buyer was found, one of the submarines was returned to Israel for display in the Haifa naval museum.

Modernisation
A major mid-life modernisation was conducted on twelve of these submarines, the boats concerned now being officially designated Type 206A. The work started in mid-1987 and completed in February 1992, being carried out by Thyssen Nordseewerke, Emden; this upgrade includes:

The STN Atlas DBQS-21D sonar has been fitted, together with new periscopes, and a new weapon control system (LEWA). The ESM system has been replaced and GPS navigation installed. The rebuilt submarines are armed with new torpedoes (Seeaal), and the propulsion system has been comprehensively refurbished, and improvements have been made to the accommodation.

February/March 2010 the U26, U28 and U30 were towed by Polish tug Ikar to 's-Gravendeel, Netherlands to be scrapped.

Spot info:
Title: Type 206A Submarine Walk Around 
Author: Ulrich Wrede 
Pics: 44 
Resolution: 1280X960X24bit jpeg 
Size: 28 Mb 

Thanks to Sneek-n-Peek :)