Which of the following IS a component of the recommended boat inspection before launch?

Examining the hull for cracks is a vital component of a recommended boat inspection before launch. The hull is one of the most critical parts of the boat, as it is responsible for keeping the vessel afloat and ensuring that it can handle various water conditions without taking on water. Cracks or damage to the hull can lead to leaks, which may result in a dangerous situation while out on the water. Addressing any issues with the hull before launching helps ensure the vessel's safety, stability, and overall performance.

While other components such as checking engine coolant levels, inspecting the propeller, and testing the navigation system are important for a functional boating experience, they specifically address different aspects of the boat's operation rather than its structural integrity. The hull inspection is primarily about safety in terms of preventing water intake and ensuring the vessel can be operated safely, which underscores its importance in the pre-launch checklist.