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.

Read on to find out more about the Navy's at-sea training and environmental stewardship initiatives.​

AT-SEA TRAINING Military training and testing activities must be as realistic as possible to provide Sailors with the experiences necessary for success and safety.

SONAR SONAR is an acronym for SOund Navigation And Ranging and is used to find and identify objects in the water. Some types of sonar can be used 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 for months at a time – find out how the Navy responsibly dispose of all the plastic that is generated each day.

ENVIRONMENTAL PLANNING The Navy uses protective measures that reduce the potential for impacts to the ocean environment.

PROTECTIVE MEASURES The Navy implements protective measures before, during, and after Navy training exercises to reduce potential impacts to marine species.

MARINE SPECIES RESEARCH AND MONITORING The U.S. Navy is one of the world's leading organizations in assessing the effects of human-generated sound on the marine environment.

NATIONAL OCEAN POLICY In 2010, a Presidential Executive Order established a National Ocean Policy (NOP) to guide the protection, maintenance, and restoration of America's oceans and coasts.