How many days must battle-rostered crewmembers be table IV certified during a section training exercise?

Table IV certification is a specific requirement aimed at ensuring that battle-rostered crewmembers maintain a high level of readiness and proficiency in their gunnery skills. In this context, being table IV certified during a section training exercise is critical for operational effectiveness.

The correct answer of 90 days reflects the time frame required to ensure that crewmembers are regularly evaluated and can demonstrate their skills in realistic training environments. This period allows for sufficient training, assessment, and reinforcement of necessary competencies, leading to improved performance during actual operations.

Setting the timeline at 90 days balances the need for proficiency with operational readiness, thus ensuring that the crew members remain sharp in their abilities without being overwhelmed by excessively frequent certifications.