Andrasta is a

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 ...

design concept announced by the

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shipbuilder Shipbuilding is the construction of ships and other floating vessels. It normally takes place in a specialized facility known as a shipyard. Shipbuilders, also called shipwrights, follow a specialized occupation that traces its roots to befor ...

DCNS in 2008. A development of the and based on the previous SMX-23 concept, it is a smaller vessel optimised for shallow water operations. DCNS advertising material for the ship concept, in a

PDF Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. ...

document with a date-time stamp of 19 October 2008, includes information and digital illustrations that reveal the torpedo tube configuration and other details. The draught of the proposed submarine is apparent from the numbered depth markings shown on the hull in one of the illustrations. It is designed for anti-submarine and anti-surface warfare, as well as intelligence gathering and special operations.Naval Technology, Sept 2008
/ref> This design evolved into the Scorpène 1000.

References

Submarine classes Proposed ships {{submarine-stub