I'm very confused by the OP. There's legitimately nothing "simple" about the massive container ship system described in the OP. It's a complicated semi-autonom

I'm very confused by the OP. There's legitimately nothing "simple" about the massive container ship system described in the OP. It's a complicated semi-autonomous cyber-physical system with multiple complex failure modes possible in the software, electrical, hydraulic, and/or mechanical domains. The reason said system has both the superficial appearance of simplicity to its operators and the high-probability of low-downtime is because its very complex systems and subsystems were fastidiously designed and built using tools, processes, and practices which helped manage and understand all that complexity. Not because it is "simple".