1969 – NR-1 Submersible – General Dynamics (American)

1969 – NR-1 Submersible by General Dynamics. Early design sketch of the NR-1 sub. Builder: General Dynamics Electric Boat Laid down: 10 June 1967 Launched: 25 January 1969 Source: Wikipedia NR-1 is able to land on the seafloor on a pair of retractable wheels and can lift heavy objects with a manipulator arm system. NR-1's …