Engineering:Type 212 submarine

Short description: Class of diesel-electric Submarine

212A-class profile
U-34 underway
Class overview
Builders:	Howaldtswerke-Deutsche Werft GmbH (HDW) - Fincantieri SpA
Operators:	German Navy Marina Militare
Preceded by:	Type 206 submarine (Germany), Sauro class submarine (Italy), Ula-class submarine (Norway)
Succeeded by:	Type 216 submarine
Cost:	€280-560 million
Built:	1998–present
In commission:	2005–present
Planned:	20
Completed:	10
Active:	10
General characteristics
Displacement:	1,524 tonnes (1,500 long tons) surfaced 1,830 tonnes (1,800 long tons) submerged 2,500 tonnes (2,500 long tons) surfaced (212 CD)
Length:	56 metres (183 ft 9 in) 57.20 metres (187 ft 8 in) (2nd batch) 58.30 metres (191 ft 3 in) (212 NFS) 73 metres (239 ft 6 in) (212 CD)
Beam:	6.80 metres (22 ft 4 in) 10 metres (32 ft 10 in) (212 CD)
Draught:	6.40 metres (21 ft 0 in)
Decks:	2
Installed power:	1 x MTU-396 16V (2,150 kW); 1 x Siemens Permasyn electric motor Type FR6439-3900KW (2,850 kW)
Propulsion:	1 MTU 16V 396 marine diesel engine 9 HDW/Siemens PEM fuel cells, 30–40 kW each (U31) 2 HDW/Siemens PEM fuel cells each with 120 kW (U32, U33, U34) 1 Siemens Permasyn electric motor 1700 kW, driving a single seven-bladed skewback propeller
Speed:	12 knots (22 km/h; 14 mph) surfaced 20 knots (37 km/h; 23 mph) submerged
Range:	8,000 nautical miles (15,000 km; 9,200 mi) at 8 knots (15 km/h; 9.2 mph)
Endurance:	3 weeks without snorkeling, 12 weeks overall
Test depth:	250 metres (820 ft) crush depth over 700 m (2,296 ft)
Complement:	5 officers, 22 men
Sensors and processing systems:	CSU 90 (DBQS-40FTC), Sonar: ISUS90-20, Radar: Kelvin Hughes Type 1007 I-band nav.,
Electronic warfare & decoys:	EADS FL 1800U suite
Armament:	6 x 533 millimetres (21 in) torpedo tubes (in 2 forward pointing groups of 3) with 13 DM2A4, Black Shark torpedo, IDAS missiles and 24 external naval mines (optional)

The German Type 212 class (German: U-Boot-Klasse 212 A), also Italian Todaro class, is a diesel-electric submarine developed by Howaldtswerke-Deutsche Werft AG (HDW) for the German and Italian navies. It features diesel propulsion and an additional air-independent propulsion (AIP) system using Siemens proton exchange membrane (PEM) compressed hydrogen fuel cells. The submarines can operate at high speed on diesel power or switch to the AIP system for silent slow cruising, staying submerged for up to three weeks with little exhaust heat. The system is also said to be vibration-free, extremely quiet and virtually undetectable.

Type 212 is the first fuel cell propulsion system equipped submarine series.

Development

At the beginning of the 1990s the German Navy was seeking a replacement for the Type 206 submarines. Initial study started on a Type 209 improved design, with AIP capability, called Type 212.

The final programme started in 1994 as the two navies of Germany and Italy began working together to design a new conventional submarine, respectively to operate in the shallow and confined waters of the Baltic Sea and in the deeper waters of the Mediterranean Sea. The two different requirements were mixed into a common one and, because of significant updates to the design, the designation has been changed to Type 212A since then.

On 22 April 1996 a Memorandum of Understanding (MOU) gave the start to the cooperation for building four vessels for German Navy and four vessels for Italian Navy. Its main aim was the construction of identical boats and the start of a collaboration in logistic and life-cycle support for the two navies.

The German government placed an initial order of four Type 212A submarines in 1998. The German Submarine Consortium built them at the shipyards of HDW and Thyssen Nordseewerke GmbH (TNSW) of Emden. Different sections of the submarines were constructed at both sites at the same time and then half of them were shipped to the respective other yard so that both HDW and Thyssen Nordseewerke assembled two complete submarines each.

In the same year the Italian government placed an order of two U212A submarines built by Fincantieri for the Italian Navy (Marina Militare) at Muggiano shipyard, designated as the Todaro class.

The German Navy ordered two additional, improved submarines in 2006, to be delivered from 2012 on. They will be 1.2 meters longer to give additional space for a new reconnaissance mast.

On 21 April 2008 the Italian Navy ordered the optional second batch of submarine, in the same configuration of the original ones. Some upgrading should involve materials and components of commercial derivation, as well as the software package of the CMS. The intention is to keep the same configuration of the first series and reduce maintenance costs.

The export-oriented Type 214 submarine succeeds the Type 209 submarine and shares certain features with the Type 212A, such as the AIP fuel cell propulsion.

Poland announced in December 2013 they will not buy, but only lease, two U212-A's, on account of not meeting "requirements of tactical and technical equipment developed by the military, including in particular the propulsion system, missile weapons and rescue system".

On 22 December 2015 Admiral Giuseppe De Giorgi, Commander in Chief of the Italian Navy, announced plans to build another two U212A submarines.

In October 2016, during the celebration of the commissioning of U36, the German Navy announced the intent to procure another batch of two U212A within the next decade.

Type 212CD

In February 2017, it was announced that the Royal Norwegian Navy will procure four submarines based on Type 212. Initial plans envisaged service entry between 2025 and 2028. However, the Norwegian 2020 Defence Plan later envisaged service entry "around 2030". This "CD" (Common Design) variant of the Type 212 will consist of six submarines, with the German Navy ordering two new boats alongside the four Norwegian vessels. In March 2021 it was indicated that an agreement had been reached between Norway and Germany to initiate the acquisition program, pending approval by the Bundestag. The contract for construction of the six boats was signed in July 2021 with delivery of the first boat to the Royal Norwegian Navy anticipated in 2029.

Design

Partly owing to the "X" arrangement of the stern planes, the Type 212 is capable of operating in as little as 17 metres of water, allowing it to come much closer to shore than most contemporary submarines. This gives it an advantage in covert operations, as SCUBA-equipped commandos operating from the boat can surface close to the beach and execute their mission more quickly and with less effort.

A notable design feature is the prismatic hull cross-section and smoothly faired transitions from the hull to the sail, improving the boat's stealth characteristics. The ship and internal fixtures are constructed of nonmagnetic materials, significantly reducing the chances of it being detected by magnetometers or setting off magnetic naval mines.

Air-independent propulsion

U32

Although hydrogen–oxygen propulsion had been considered for submarines as early as World War I, the concept was not very successful until recently due to fire and explosion concerns. In the Type 212 this has been countered by storing the fuel and oxidizer in tanks outside the crew space, between the pressure hull and outer light hull. The gases are piped through the pressure hull to the fuel cells as needed to generate electricity, but at any given time there is only a very small amount of gas present in the crew space.

Weapons

U31 of the German Navy in Kiel harbor

U33 in Tallinn harbor, Estonia

Currently, the Type 212A is capable of launching the fiber optic-guided DM2A4 Seehecht ("Seahake") heavyweight torpedoes, the WASS BlackShark torpedoes and short-range missiles from its six torpedo tubes, which use a water ram expulsion system. Future capability may include tube-launched cruise missiles.

The short-range IDAS missile (based on the IRIS-T missile), primarily intended for use against air threats as well as small or medium-sized sea- or near land targets, is currently being developed by Diehl BGT Defence to be fired from Type 212's torpedo tubes. IDAS is fiber-optic guided and has a range of approx. 20 km. Four missiles fit in one torpedo tube, stored in a magazine. First deliveries of IDAS for the German Navy were scheduled from 2014 on.

A 30mm auto-cannon called Muräne (moray) to support diver operations or to give warning shots is being considered, too. The cannon, probably a version of the RMK30 built by Rheinmetall, will be stored in a retractable mast and can be fired without the boat emerging. The mast will also be designed to contain three Aladin UAVs for reconnaissance missions. This mast is likely to be mounted on the second batch of Type 212 submarines for the German Navy.

Operations

In April 2006, the German Navy's U-32 sailed from the Baltic Sea to Rota, Spain in a journey lasting two weeks which covered 1,500 nautical miles (2,800 km; 1,700 mi) without surfacing or snorkelling.

The Italian Navy's S 526 Todaro was deployed, for over six months in 2008, to the United States for CONUS 2008 exercise with the United States Navy.

Scirè arrives on a port visit at New London, Connecticut, on 27 August 2009

The Italian Navy's S 527 Scirè was deployed, for over five months in 2009, to the U.S. for CONUS 2009 exercise with the United States Navy.

The Italian Navy's S 526 Todaro, between 1 September 2012 and 13 February 2013, for the first time was deployed to the Aden Gulf, Arabic Sea, Oman Gulf and Indian Ocean.

In 2013, while on the way to participate in naval exercises in U.S. waters, the German Navy's U-32 established a new record for non-nuclear submarines with 18 days in submerged transit without snorkelling.

On 15 October 2017, the German Navy's U-35 suffered damage to its rudder fins while conducting dives off the Norwegian coast.

List of boats

Pennant number	Name	Laid down	Launched	Commissioned
Deutsche Marine
S181	U-31	1 July 1998	20 March 2002	19 October 2005
S182	U-32	11 July 2000	4 December 2003	19 October 2005
S183	U-33	30 April 2001	September 2004	13 June 2006
S184	U-34	December 2001	July 2006	3 May 2007
S185	U-35	21 August 2007	15 November 2011	23 March 2015
S186	U-36	19 August 2008	6 February 2013	10 October 2016
Marina Militare
S 526	Salvatore Todaro	3 July 1999	6 November 2003	29 March 2006
S 527	Scirè	27 May 2000	18 December 2004	19 February 2007
S 528	Pietro Venuti	9 December 2009	9 October 2014	6 July 2016
S 529	Romeo Romei	2012	4 July 2015	11 May 2017
TBC (U212 NFS)		11 January 2022		2027
TBC (U212 NFS)		2024		2029
TBC (option)		2026		2031 (if confirmed)
TBC (option)		2028		2033 (if confirmed)

Italics indicate estimated date

General characteristics

In dock at HDW/Kiel

Todaro in dock at Fincantieri, Muggiano.

• Displacement: 1,450 tonnes surfaced, 1,830 tonnes submerged 2,500 tonnes surfaced for 212CD
• Length: 56 m (183.7 ft), 57.2 m (187.66 ft) (2nd batch) 73 m for 212CD
• Beam: 7 m (22.96 ft) 10 m for 212CD
• Draft: 6 m (19.68 ft) 7 m for 212CD
• Propulsion:
  • 1 MTU 16V 396 diesel-engine
  • 9 HDW/Siemens PEM fuel cells, 30–40 kW each (U31)
  • 2 HDW/Siemens PEM fuel cells 120 kW (U32, U33, U34)
  • 1 Siemens Permasyn electric motor 1700 kW, driving a single seven-bladed skewback propeller
• Speed: 20 knots (37 km/h) submerged, 12 knots surfaced
• Depth: over 700 m (2,300 ft)
• Range:
  • 8,000 nautical miles (14,800 km, or 9,196 miles) at 8 knots (15 km/h)
• Endurance: 3 weeks without snorkeling, 12 weeks overall
• Armament:
  • 6 x 533 mm torpedo tubes (in 2 forward-pointing asymmetric groups of left 4 + right 2 ) with 13 torpedoes or 24 tube mines
  • IDAS missiles
  • 24 external naval mines (optional)
• Countermeasures:
  • Torpedo defence system Tau, 4 launchers, 40 jammers/decoys
• Sensors:
  • STN Atlas DBQS40 sonar suite:
    • TAS-3 passive low-frequency towed array sonar (deployed from sail)
    • FAS-3 passive low-, and medium-frequency hull-mounted flank array sonar
    • MOA 3070 mine detection sonar
  • Periscopes:
    • Carl Zeiss SERO 14, with FLIR and optical rangefinder
    • Carl Zeiss SERO 15, with laser rangefinder
  • Riva Calzoni periscope masts and snorkeling systems
  • Kelvin Hughes Type 1007 I band navigation radar
  • EADS FL 1800U ESM suite
  • WASS hydrophones
  • Avio GAUDI autopilot and hydraulic systems
  • Kongsberg MSI-91 combat system
• Crew complement: 23–27 (incl. 5 officers)

See also

• List of submarine classes in service
• List of active German Navy ships
• List of active Italian Navy ships

Submarines of similar comparison

• Type 214 submarine - A class of export-oriented diesel-electric attack-submarines, also developed by ThyssenKrupp Marine Systems and currently operated by the Hellenic Navy, the Portuguese Navy, the Republic of Korea Navy and the Turkish Naval Forces.
• Type 218SG submarine - A class of extensively-customised diesel-electric attack-submarines developed ThyssenKrupp Marine Systems and currently operated by the Republic of Singapore Navy.
• Dolphin-class submarine - A class of extensively-customised diesel-electric attack-submarines developed by ThyssenKrupp Marine Systems and currently operated by Israel.
• Dakar-class submarine - A unique class of diesel-electric attack-submarines developed by ThyssenKrupp Marine Systems and currently being built for Israel.
• Scorpène-class submarine - A class of export-oriented diesel-electric attack-submarines, jointly developed by Naval Group and Navantia and currently operated by the Chilean Navy, the Royal Malaysian Navy, the Indian Navy and the Brazilian Navy.
• S-80 Plus submarine - A class of conventionally-powered attack-submarines, currently being built by Navantia for the Spanish Navy.
• Blekinge-class submarine is a class of submarine developed by Kockums for the Swedish Navy
• KSS-III submarine - A class of diesel-electric attack submarines, built by Daewoo Shipbuilding & Marine Engineering and Hyundai Heavy Industries and operated by the Republic of Korea Navy.
• Sōryū-class submarine - A class of diesel-electric attack-submarines, built by Mitsubishi Heavy Industries for the Japan Maritime Self-Defense Force.
• Taigei-class submarine - A class of diesel-electric attack submarines currently being built by Mitsubishi Heavy Industries and Kawasaki Heavy Industries for the Japan Maritime Self-Defense Force
• Type 039A submarine - A class of diesel-electric attack-submarines operated by the People's Liberation Army Navy (China) and being built for the navies of the Royal Thai Navy and the Pakistan Navy.
• Lada-class submarine - A class of diesel-electric attack-submarines being built for the Russian Navy.

Bibliography

• Karr, Hans (2014) (in de). Deutsche Uboote seit 1956. Stuttgart: Motorbuch. ISBN 9783613037083. 

External links

• German Bundeswehr official Type 212A web page
• naval-technology.com — U212/U214 Attack Submarines, Germany
• German Type 212A deal bolsters submarine force Jane's Navy International, 28 September 2006
• Todaro (S 526) Marina Militare website