Indian Private sector defense contractor Larsen & Toubro Defence is scouting for customers for its SOV-400, a new midget submarine design that the company has designed and is offering to many smaller Asian countries with smaller Navy to be used as a Coastal patrol submarine in the region.

SOV-400 has a submerged displacement of 550 tons and can be armed with two 533mm heavyweight torpedoes carried externally. SOV400 can also be used as a special ops midget submarine carrying 10 SF operators. Two 4-person SDVs (Swimmer Delivery Vehicles).

SOV400 can also be fitted with a modern conformal array of sonar and advanced radio-electronic sensors and can be used for detection, surveillance, communication, and interception roles in Coastal patrol duties.

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