Info Romeo class submarine

                      The Romeo class (Project 633) is a class of Soviet diesel-electric submarine, build in 1950s. The origin of thes Romeo class can be traced to the World War II German Type XXI Elektroboot U-boat. At the end of World War II, the Soviets obtained several Type XXIs, from which they were able to obtain certain key technology. These technologies assisted in the design of the Zulu- and Whiskey-class. Further improvements on the design led to the Romeo class. Only 20 of the Soviet Union's originally intended 560 were finished between October 1957 and the end of December 1961 because of the preface of the nuclear submarine into the Soviet Navy.By today's standards, the Romeo class submarine is considered obsolete, but still has some value as training and surveillance vessels.