A satellite can observe a broad area without supplying equally detailed coverage of every point. A high geosynchronous orbit raises the question of how much detail its sensors can resolve. Fixed viewing geometry can also leave parts of a scene obscured. Those limitations challenge the assumption that satellites make every ship continuously visible.
Notable Point · 49:26-50:54
Why satellites do not make every ship continuously visible
Orbital height and viewing geometry limit what a satellite can see, even when it keeps looking toward the same region.