Which of the following is part of a Coast Guard boarding officer's credentials?

A Coast Guard boarding officer's credentials must include a badge and official identification because these items serve as critical proof of their authority and status. The badge symbolizes law enforcement powers, while the official identification provides tangible verification of their role as a boarding officer. This ensures that they are recognized as authorized personnel while conducting inspections, enforcing maritime laws, and carrying out safety checks on vessels.

While a high school diploma, basic first aid certification, and experience in maritime navigation can enhance a boarding officer's effectiveness, they do not constitute the essential credentials that enable an officer to perform their duties legally and effectively. The badge and identification are crucial for both establishing credibility and ensuring compliance with legal standards during operations.