Maritime domain awareness (MDA) is defined as the effective understanding of anything associated with the maritime domain that could impact the security, safety, economy, or environment. It is part of a US government interagency and international maritime security effort. The maritime domain is defined as all areas and things of, on, under, relating to, adjacent to, or bordering on a sea, ocean, or other navigable waterway, including all maritime-related activities, infrastructure, people, cargo, and vessels and other conveyances. Maritime Domain Awareness

The Secretary of the Navy is the DoD Executive Agent for maritime domain awareness.(Maritime Domain Awareness in the Department of Defense)

Maritime Domain Awareness Stakeholders

• U.S. National Security Council
• U.S. Office of Global Maritime and Air Intelligence Integration (GMAII/DNI)
• U.S. Department of Transportation, Maritime Administration (MARAD)
• U.S. Department of Defense Executive Agent for Maritime Domain Awareness (DoDEAforMDA)
• U.S. Coast Guard Office of Maritime Domain Awareness & Information Sharing Staff (CG-51M)

• Maritime Awareness Wiki (GMSA)

Maritime Domain Awareness Tools

• NASA WORLD WIND
• Google Earth
• NATO Maritime Situational Awareness (MSA)
• Law Enforcement Information Exchange (LInX)
• MarView
• Maritime Security Safety Information System (MSSIS)
• Automatic Identification System (AIS)
  Automatic Identification System
  The Automatic Identification System is an automatic tracking system used on ships and by Vessel traffic services for identifying and locating vessels by electronically exchanging data with other nearby ships and AIS Base stations...
  
  
• CSHADO Web Portal Cooperative Security (HA/DR)
• Maritime Awareness Global Network(MAGNet)