Project 667B

The Project 667B (Delta Class NATO designation) is the second generation of Project 667A (Yankee Class NATO designation) strategic submarines of which 34 units were produced with the first boat entering service in 1967. Their nuclear propulsion provides outstanding performance over conventionally-powered submarines as well as longer endurance while submerged. The first Project 667B boat was commissioned in 1973 and since then 43 boats were commissioned for the Russian/Soviet Navy. The Project 667B, Murena Soviet designation and Delta I NATO designation, are an stretched variant of project 667A submarine design. They were equipped with 12 single warhead R-29 ballistic missiles and four 533mm torpedo tubes. The first boat entered service in 1973. The Soviet Navy commissioned 18 Delta I submarines through 1978. All these ships have been decommissioned.

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