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Light Management

Light Management

Light is vital to the regulation of the 24-hour biological clock found in all living creatures. In humans, high-energy visible (HEV) light synchronizes the circadian system and suppresses the release of melatonin during the biological day.

For night shift workers, reducing light exposure prior to sleep is important. Light from the sun, artificial lighting, and light from electronic devices can play havoc with circadian rhythms and interfere with healthy sleep. These interferences are common for US Navy personnel, resulting in reduced sleep, elevated levels of fatigue, impaired performance, and altered mood.

Innovations that allow personnel to control or manage their light exposure – either throughpersonal or ambient light management devices – could potentially result in improved circadian entrainment, better sleep, less fatigue, and enhanced warfighter readiness.

  • Current Status: Significant progress with procurement of multiple light sources including patented delivery systems.
  • Planned: Install HEV emitting light systems on DDG and CSS-1 submarine in early 2020. 

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In ongoing efforts to improve the health, performance, and readiness of the Navy warfighter, the Naval Postgraduate School’s Crew Endurance Team has been working on ways to improve Sailors’ work cente... Read More

Sleep and Crew Endurance Training
The Surface Navy issued a force-wide directive mandating use of circadian-based watchbills while underway (COMNAVSURFOR, P200042Z SEP 17). To successfully implement the policy, Commands can benefit fr... Read More

Stress Inoculation
Stress Inoculation Training (SIT) is being introduced at the Surface Warfare Officers School (SWOS) in Newport, RI with the aim of familiarizing the personnel with their own psychological and physiolo... Read More

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The Crew Endurance Team is available for the following missions support services:

  • Help in structuring work and rest schedules both underway and in port
  • Education and training to promote healthy sleep habits for leadership and individual Sailors
  • Evaluation of your current watchbill
  • Assessment of new watchbills prior to implementation
  • Measuring fatigue levels for you and your crew
  • Uncovering sleep-related habitability issues that contribute to poor sleep