The setting does not show enough capacity to make the fleet's logistics credible. Naval deployments normally last days or months and use trained crews, while this force must sustain roughly 50,000 displaced civilians for more than four years. The ships have to provide the economy, workforce, and life-support systems that fixed bases once supplied. A long cruise is therefore the wrong comparison. This is a mobile society with no outside base or reserve.
Chapter · 0:24-2:54
Why a four-year refugee voyage breaks normal fleet assumptions
The refugee fleet's size, civilian population, and multi-year voyage exceed the endurance assumptions behind normal naval deployments.