What does the abbreviation "CG" stand for?

The abbreviation "CG" stands for "Coast Guard." This term refers to the maritime security organization in various countries responsible for enforcing maritime law, conducting search and rescue operations, and maintaining safety on the water. In the United States, the Coast Guard operates under the Department of Homeland Security and plays a critical role in protecting the nation’s waters and maritime interests.

The other options do not accurately capture the recognized term or organization. "Cruise Guard" and "Commercial Guard" are not established terms for any maritime security agencies. "Coastal Guard" is also not the correct designation for the U.S. organization, which explicitly uses "Coast Guard" in its title. Thus, identifying the correct abbreviation is crucial for understanding the responsibilities and functions of this vital service.