Modern warships still need an offline fighting mode

Could a serious AI or network compromise force modern ships totally offline?

They are prepared to operate offline, but protecting command systems requires carefully limited interfaces and continuing scrutiny of complex multinational networks.

Modern ships retain the ability to function without a fully connected network. Isolation and tightly limited interfaces are central to making data systems genuinely secure. The F-35 provides an example of the concern created when many partners share interconnected systems. National customisation of command-and-control arrangements is one response to the danger of relying on an entirely generic networked architecture.