
The Type 212 submarine class was developed by German company Howaldtswerke-Deutsche Werft AG. Type 212 submarines run on diesel propulsion. They are also air-independent. This type of submarine also makes use of Siemens proton Exchange membrane compressed hydrogen fuel cells. Because of this, they can operate in various sea conditions, even extreme cold.
thyssenkrupp marine systems
Thyssenkrupp Martial Systems announced the signing of an agreement to produce six Type 212CD submarines for Germany's Navy. The submarines are designed to be the world's most advanced non-nuclear submarines, according to the company. Construction of the first of these submarines could begin in 2023.
Currently, six Type 212 submarines are in the German Navy. Two more Type212 submarines are currently under development in a joint Norwegian-German project. Six identical submarines from the German Navy will be delivered to the Norwegian Navy, as well as six other vessels for the German Navy.

Kongsberg defence & aerospace
The Norwegian and German navies have made an agreement to purchase new Type 212CD submarines from Kongsberg defence & aerospace. This agreement is part an even larger program that will last into the 2030s. They will cooperate on submarine missile procurement, development, and operation of new submarines.
The contracts, worth 70 million euro and 72.9 million euro respectively, will equip future German and Norwegian Type 212CD Submarines with advanced technology. These systems will offer the highest level of safety and capability for submerged operations.
German Navy
A German Navy sailor took a walkthrough video of the U34 submarine, a Type 212A air-independent-propulsion submarine, during the German-sponsored exercise Northern Coasts 2016. The U34 advanced non-nuclear submarine can be submerged for up three weeks and not resurfacing. It is powered by Siemens's proton exchange membrane, compressed hydrogen fuel cell technology.
The Type 212 submarine, the latest non-nuclear submarine to join the fleet of the German Navy, is now available. This submarine uses hydrogen fuel cells to power its air-independent propulsion. It is believed to have a low noise signature and can be submerged for as long as three weeks without needing to surface. It also features a unique "X" configuration to track planes and perform special operations.

Special Forces submarines
The Type 212 is a German submarine. It is a stealthy sub and has a top speed 23 mph. This submarine is designed to be a reconnaissance boat. Its armament consists of torpedoes. It has six torpedo tubes that can fire up to 13 533 millimeter DM2A4 Seahake grenades. Type 212 can hold up to 24 mines.
The Type 212 is manned by five officers and twenty-two sailors. It can be used in water up to 17m deep and on a surface close by the shore. It has prismatic cross-sections for its hull, which make it less susceptible to detection by magnetic naval miners.