The Astute class submarines will have this full-life core installed.

It is not known whether more Astute class submarines will be ordered.

They will be followed by female ratings in 2015, when women should also begin serving on the new Astute class submarine.

If a smaller class submarine was involved, there is a bigger question mark.

The yard played a critical role in the development of nuclear-powered, Arihant class submarine.

The results gained from experiments with Number 71 formed the basis for the I-201 class submarines.

Not to be confused with the United States D class submarine of 1909-1910.

All the E class submarines were withdrawn from service by 1922.

By the time she was launched, a number of A class submarines had already been ordered to replace this class in navy service.

Qing class submarine (Type 043) - 1 completed, probably in active service, more under construction.