INS ''Sindhuraj'' (S57) is a diesel-electric

submarine A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely op ...

of the

Indian Navy The Indian Navy is the maritime branch of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Navy. The Chief of Naval Staff, a four-star admiral, commands the navy. As a blue-water navy, it operates sig ...

References

Sindhughosh-class submarines Attack submarines Ships built in the Soviet Union 1987 ships Submarines of India {{India-mil-stub