Type 216 submarine

The Type 216 is a submarine design concept announced by Howaldtswerke-Deutsche Werft based on the Type 212/214. It is a larger design targeted to meet the needs of the Australian Collins class submarine replacement project, also known as Sea 1000, and the needs of other countries possibly including India and Canada. The design is double hulled, constructed of HY80 steel, includes a PEM fuel cell power plant, and lithium-ion batteries.