Solution:P-75 1 (or P-75 India) project refers to manufacture of diesel-electric submarines.It is a planned class of diesel- electric submarines, which are to be built for the Indian Navy. The P-75 I is a follow on of the P-75 class submarines of the Indian Navy. Under this project, the Indian Navy intends to acquire six conventional, diesel-electric attack submarines, which will also feature advanced capabilities- Air Independent Propulsion (AIP), ISR, Special Operations Forces (SOF), Anti-Ship Warfare (ASHW), Anti-Submarine Warfare (ASW), Anti-Surface Warfare (ASuW), land-attack capabilities and other features. They all are expected to be constructed in India under the 'Make in India' initiative.