How many times can the SSCC and SSCEC be renewed after their expiration?

The correct answer indicates that the Sanitation Certificate for a ship can be renewed once for one month after its expiration. This process is essential for maintaining the standards of sanitation and health onboard naval vessels. By allowing a single one-month renewal, it ensures that there is a mechanism in place to encourage prompt attention to sanitation issues while still providing a brief extension for compliance.

This approach emphasizes the importance of continuous monitoring of sanitary conditions and underscores the necessity of adhering to set timelines for renewal to ensure that ships remain compliant with health and safety regulations. A single month is typically seen as adequate time for a ship's crew to address any issues and complete necessary evaluations before obtaining a renewed certificate.

The other options suggest variations in renewal provisions that do not align with established protocols for the Sanitation Certificate, which normally sets a specific timeframe to maintain compliance and promotes proactive management of sanitation efforts onboard vessels.