Which U.S. Government agency can suspend or revoke a Merchant Mariner Credential for violating the load line act?

Correct Answer: Option B — U.S. Coast Guard

The U.S. Coast Guard is the primary federal agency responsible for enforcing the Load Line Act under 46 U.S.C. Chapter 51. They possess the statutory authority to inspect vessels, verify load line markings, and initiate suspension or revocation proceedings against mariners for violations that compromise the vessel's structural integrity and stability.