Plain-language definitions grounded in the clinical and regulatory literature.
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Behavior
What it isThe Comprehensive Fatigue and Endurance Management Policy (CFEMP) is a US Navy surface fleet policy mandated by fleet commanders in 2017 that requires circadian-aligned watch schedules and a minimum 7-hour sleep opportunity at a consistent time daily for sailors aboard surface warships.
Why it mattersCFEMP represented the first formal acknowledgment that backward-rotating watch schedules were producing dangerous cognitive impairment in surface fleet crews. It was directly triggered by the USS Fitzgerald and USS John S. McCain collisions in summer 2017, both attributed in part to crew fatigue.
Think of it like thisCFEMP is the Navy’s institutional admission that watch scheduling had been treating human physiology as infinitely adaptable, and that the evidence had finally overwhelmed that assumption.
CFEMP was promulgated by Commander, Naval Surface Forces and Commander, Naval Surface Force Pacific in late 2017. Key provisions: mandatory circadian-based watch rotations; minimum 7-hour sleep opportunity scheduled at the same time daily; elimination of backward-rotating watch schedules that require phase advance faster than 0.5-1.0 hours per day; documentation requirements for watch schedule compliance.
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