Mir (submersible) - Wikipedia

CASE – MIR 1 PERSONNEL SPHERE - Maker3D - From idea to product

3 other submersibles visiting Titanic almost suffered the same fate as Titan

CASE – MIR 1 PERSONNEL SPHERE - Maker3D - From idea to product

1987 – MIR-1 and 2 Deep Submersibles - (Finnish/Soviet)

Fact Check: Was James Cameron exploring the Titanic wreckage on 9/11? Viral claim explored amid submarine's implosion

Batiscafo Mir-1, o submarino que estudou o Titanic (e também fez ponta no filme) - Russia Beyond BR

Russian submarines Mir 1 and 2, 1/200

Submarine, PDF, Submarines

Titanic (1997 film) - Wikipedia