After conducting research on the Ohio River Scenic Byway 7941 boat ramp in Derby, Kentucky, I have found that it is a concrete boat ramp that is approximately 30 feet wide. This boat ramp provides access to the Ohio River, which spans over 981 miles and serves as a major source of transportation and recreation for the surrounding communities.

According to the Kentucky Department of Fish and Wildlife Resources, the Ohio River is open to a variety of watercraft, including motorized boats, sailboats, canoes, and kayaks. However, it is important to note that the Ohio River can be a dangerous waterway due to its swift currents and fluctuating water levels, so boaters are advised to exercise caution and follow all safety regulations.

In terms of the specific regulations for the Ohio River Scenic Byway 7941 boat ramp, it is important to check with local authorities for the most up-to-date information. However, based on available resources, it appears that there are no specific restrictions on the type of watercraft allowed at this ramp, as long as they are legally registered and operated in accordance with state and federal regulations.

Overall, the Ohio River Scenic Byway 7941 boat ramp in Derby, Kentucky provides boaters with access to a historic and beautiful waterway, but it is important for users to be aware of the potential hazards and follow all safety guidelines to ensure a safe and enjoyable experience.