The US Navy's $22.2 billion contract for 9 Virginia-class attack submarines is the largest shipbuilding contract in the service's history.

In 2018, the Navy commissioned the nuclear-powered USS Indiana (SSN 789), a Block III submarine in the Virginia-class. Check out the images below to see what it's like aboard the Indiana.

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The US Navy awarded a contract to General Dynamics Electric Boat to build its Block V Virginia-class submarines, Navy Times reported Monday. The contract to build nine boats is worth $22.2 billion, the largest-ever shipbuilding contract awarded by the Navy.

Block V subs are just the latest group of the Virginia-class subs, and all but one will triple the Tomahawk missile load of other ships in the fleet with the Virginia Payload Module.

While it'll be years before the Block V ships set sail, the US Navy commissioned one Block III Virginia-class in February, the USS South Dakota (SSN 790) and is set to commission another next year, the USS Delaware (SSN 791).

In 2018, the Navy commissioned the nuclear-powered USS Indiana (SSN 789), the fourth Navy vessel named after the state of Indiana and the Navy's sixteenth Virginia-class submarine, entered service on September 29, 2018, at a commissioning ceremony in Port Canaveral, Florida.

"Indiana is a flexible, multi-mission platform designed to carry out the seven core competencies of the submarine force: anti-submarine warfare, anti-surface warfare, delivery of Special Operations Forces (SOF), strike warfare, irregular warfare, intelligence, surveillance and reconnaissance, and mine warfare," the Navy said in a press statement.

Check it out below.

(Some of the following photos have already been released, but Business Insider was able to get a few unpublished photos of the torpedo room and more from Submarine Force Atlantic.)