Howaldtswerke-Deutsche Werft
The team of Ingenieurkontor Lübeck (IKL) and Howaldtswerke-Deutsche Werft (HDW) proposed an enlarged Type 209 submarine, the Type 2000, for the program. The proposed design was roughly 500 tons more than the Type 209/1500s for India and lost to the Type 471 from Kockums, an enlarged .