Altough not as famous as Kisho Kurokawa’s emblematic Nakagin Capsule Tower, the ominous New Sky Building (aka Sky Building No.3 aka Warship building) designed by Yoji Watanabe is one of the jewels of the Metabolist movement. The building completed in 1970 in Shinjuku  features bolt-on units and balconies characteristic of Metabolism’s ideal of modularity. Its naval appearance isn’t accidental as Watanabe, supposedly born on a US navy ship, borrowed techniques proper to submarine building. The theme culminates (heh) in the roof design which features a battlleship deck looking floor and the building defining submarine sail-like concrete structure.