The Type 205 was a class of

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diesel-electric submarines. They were single-

hull Hull may refer to: Structures * Chassis, of an armored fighting vehicle * Fuselage, of an aircraft * Hull (botany), the outer covering of seeds * Hull (watercraft), the body or frame of a ship * Submarine hull Mathematics * Affine hull, in affi ...

vessels optimized for the use in the shallow

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. The Type 205 is a direct evolution of the Type 201 class with lengthened hull, new machinery and sensors. The biggest difference though is that ST-52 steel is used for the pressure hull since the Type 201's non-magnetic steel proved to be problematic. Type 206, the follow-on class, finally succeeded with non-magnetic steel hulls. Plans of the Type 205

The Type 205 was in service with the

Royal Danish Navy The Royal Danish Navy ( da, Søværnet) is the sea-based branch of the Danish Defence force. The RDN is mainly responsible for maritime defence and maintaining the sovereignty of Danish territorial waters (incl. Faroe Islands and Greenland). ...

until 2004, in which it was known as ''Narhvalen'' class. The Danish boats differed slightly from the German ones to meet special Danish demands. Responsible for the design and construction was the Ingenieurkontor Lübeck (IKL) headed by Ulrich Gabler.

List of boats

These last two boats were built by the Howaldtswerke, in Denmark at The Naval Dockyard,

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. Notes: * ''U-1'' was given back to Nordseewerke and was used to test an experimental closed-cycle diesel

air-independent propulsion Air-independent propulsion (AIP), or air-independent power, is any marine propulsion technology that allows a non-nuclear submarine to operate without access to atmospheric oxygen (by surfacing or using a snorkel). AIP can augment or replace the ...

system before being scrapped * ''U-11'' was transformed to a Type 205A double-hulled boat (the outer hull filled with

polystyrene Polystyrene (PS) is a synthetic polymer made from monomers of the aromatic hydrocarbon styrene. Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and brittle. It is an inexpensive resin per unit weight. It is ...

foam to make it unsinkable) and used as torpedo target * ''U-12'' was used for sonar trials as Type 205B

References

* *

External links

Submarines of the Narhvalen class
- Danish Naval History {{germany-submarine-stub

List of boats

References

See also

External links