Which of the following is NOT part of the pre-departure boating checks?

The correct choice focuses on the essential checks that should be performed before departing for a boating trip. Among the options listed, navigation charts are typically not included in the initial pre-departure checks because they are more about planning for the trip rather than ensuring the safety and functionality of the boat itself.

In contrast, checking the weather forecast is crucial to ensure that conditions are suitable for boating, particularly in Maine where weather can change rapidly. Ensuring that personal flotation devices (PFDs) are onboard and in good condition is critical for safety. Additionally, checking for fuel leaks is vital to prevent fire hazards and ensure the reliability of the boat's operation. Each of these activities directly contributes to a safe and successful boating experience, while assessing the presence of navigation charts is more about preparedness for navigation rather than immediate safety or functionality checks.