At Sea 

Together, the 900,000 Sailors, Marines, and civilians in the Department of the Navy (DoN) form the world's most formidable expeditionary fighting force capable of maritime defense, major combat operations, and disaster relief. To maintain military readiness, the Navy must train the way we fight. 

The success of the Navy's at-sea environmental stewardship program contributes to the success of our military mission, all while preserving the ocean environment for future generations.

The Navy has numerous at-sea training and environmental stewardship initiatives.​

  • AT-SEA TRAINING  Military readiness activities must be as realistic as possible to provide Sailors with the experiences necessary for success and safety.
  • SONAR Originally an acronym for SOund Navigation And Ranging, sonar is a technique used to find and identify objects in the water. Some types of sonar can be used in military readiness activities to calculate distance to objects by measuring the time between when a sound wave is sent out and when the reflected sound  or echo  is received. Navy Sailors use sonar to detect submerged objects, such as submarines and mines.​
  • CITY AT SEA Thousands of hard-working Sailors live at sea aboard Navy vessels for months at a time – find out how the Navy responsibly disposes of all the plastic that is generated each day.​
  • ENVIRONMENTAL PLANNING USFFC conducts planning to analyze the potential impact of its military readiness activities and home basing/homeporting of new assets (i.e., aircraft or vessels). ​
  • PROTECTIVE MEASURES The Navy implements protective measures before, during, and after military readiness activities to reduce potential impacts to marine species.