Chernobyl was supposed to be an economically viable means of generating electricity. Comparing a tiny billion-dollar submarine reactor to a power plant simply doesn't make any sense.
replyThe reactors on aircraft carriers have a similar thermal output to many commercial power reactors. The ones on submarines are around a third of that size, about the size of SMRs like NuScale VOYGR or the Xe-100 reactors proposed to be built at Long Mott in Texas.
replyChernobyl was supposed to turn low enrichment uranium into plutonium for Soviet bombs. They made design choices that compromised safety to make plutonium production more efficient.