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The Office of Global Maritime Situational Awareness (OGMSA) is a United States interagency office tasked with achieving Maritime Domain Awareness and develop policies related to the disclosing this information to other areas of the U.S government.

The OGMSA was formed as part of the National Plan to Achieve Maritime Security in October 2005.

• Global Maritime Information Sharing Symposium (GMISS)
• Maritime Safety and Security Information System (MSSIS)
• Maritime Domain Awareness Enterprise Hubs
• Interagency Investment Strategy Monitoring, Reporting and Coordination

• U.S. National Security Presidential Directive NSPD-41/Homeland Security Presidential Directive HSPD-13 (2004)
• U.S. National Strategy for Maritime Security (2005)
• U.S. National Plan to Achieve Maritime Domain Awareness for the National Strategy for Maritime Security (2005)
• U.S. National Concept of Operations for Maritime Domain Awareness (2007)
• National Maritime Domain Awareness Requirements and Capabilities Working Group (2005) National MDA Study Interagency Investment Strategy