What documentation is often required aboard a vessel?

A vessel is required to have certain documentation to ensure safety and regulatory compliance while on the water. Among the crucial documents, the registration provides proof that the vessel is legally recognized and authorized for use. Furthermore, proof of safety equipment documentation is essential, as it confirms that the vessel is equipped with necessary safety gear such as life jackets, fire extinguishers, signaling devices, and other equipment mandated by law for safe boating.

Having valid fishing licenses, which pertains specifically to individuals engaging in fishing activities, does not encompass the broader requirements for documentation aboard a vessel. Similarly, while having a registration certificate is important, it needs to be accompanied by proof of safety equipment to fully comply with safety regulations. Proof of insurance can also be advisable but is not universally required for all types of vessels. Thus, option D provides the most comprehensive answer, representing the necessary documentation required under boating regulations in Michigan.