Maximum effort

The chain clattered noisily, groaning as more rusted links revealed themselves from beneath the surface of the water. Luke’s breaths came heavier, small clouds puffing out as the sea spray coated his jacket. He pushed himself harder, giving every ounce of strength to the effort. Each emerging link only deepened the mystery. What kind of vessel, what kind of anchor, could possibly require something built this huge? The sheer scale of it was baffling.
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