I can't remember all the details, but in the 80's Westinghouse corporation (which has built the nuclear steam supply system for over half the nuclear units in the US) built a factory and was well along getting NRC approval for "floating" nuclear power plants in the US. Of course, then the bottom fell out of the market for large base-load generating plants. I put "floating" in quotes because it was really a barge based reactor and generator that was built in a factor and then towed to a shore emplacement and grounded and surrounded by a sea wall.
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I can't remember all the details, but in the 80's Westinghouse corporation (which has built the nuclear steam supply system for over half the nuclear units in the US) built a factory and was well along getting NRC approval for "floating" nuclear power plants in the US. Of course, then the bottom fell out of the market for large base-load generating plants. I put "floating" in quotes because it was really a barge based reactor and generator that was built in a factor and then towed to a shore emplacement and grounded and surrounded by a sea wall.