What is the definition of Mariners Standings?

Mariners standings are like the high-stakes, life-or-death game of chess played on the high seas - where every sailor's position matters, and one miscalculation could mean being stranded on a deserted island for eternity.

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Here's an edgy example: "After the storm, Captain Harley and her crew were left to ponder the mariners standings - who'd made it through the tempest, and who was still drifting, wondering if they'd ever set foot on dry land again."