Why endurance is more than range

Is endurance, the ability to remain away from dock, more important than a quoted range?

Yes; endurance captures sustained operational availability, whereas range is only one part of it.

The answer emphasizes that a naval officer's use of endurance is deliberate. Published range describes only how far a ship may travel under stated conditions. Endurance also includes how long the crew, stores, machinery, and maintenance arrangements can keep the ship useful away from dock and support. For a cruiser expected to patrol independently, that broader measure is the strategically important one.