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Card #c380IR // #c380SynthesisMilitary report

Sailors on the USS Ashland (LSD-48) averaged 6.33 hours of sleep per night (SD 1.14) — significantly below the recommended 7+ hours — and a comparison against 37 other Navy platforms found Ashland sailors were not significantly different from the rest of the fleet: all 38 groups together averaged 6.35 hours, with only 13% of the studies finding sailors averaging more than 7 hours; the study links the sleep shortfall to mood, behavior, and suicide risk, motivated by "recent collisions and multiple suicides" as the cost of failure.

— In our words · Source: Analysis of Sleep, Mood, Behavior, and Suicide Risk of Sailors on the USS Ashland (Eric M. Myers)

[Use when]

When every unit measures below the bar, it's not a unit problem — it's a system problem; the Ashland study makes the case that fleet sleep is a structural readiness issue, not a discipline one.

[Why it matters]

The striking finding isn't that one ship's sailors are tired — it's that the whole fleet is tired, and tiredness is quantified against collisions and suicides; chronic sleep deprivation is a fleet-wide condition with documented lethal stakes.