Based on my research, Lake of the Woods County in Minnesota is a public boat ramp located at the coordinates provided (latitude: 48.83684158, longitude: -94.69892883). This boat ramp is classified as a concrete ramp. The width of the ramp is not specified in available sources.

The Lake of the Woods County boat ramp services the Lake of the Woods, which is one of the largest freshwater lakes in the United States. This lake spans across over 950,000 acres and stretches into Manitoba and Ontario, Canada. The Lake of the Woods offers a wide range of recreational activities, including boating, fishing, swimming, and more.

Regarding the types of watercraft permitted on the Lake of the Woods County, it seems that most types of boats are allowed. This includes motorized boats, sailboats, canoes, kayaks, and more. However, it is important to note that there may be specific regulations regarding boat size, speed limits, and other factors that boaters should be aware of before launching from this ramp.

Overall, the Lake of the Woods County boat ramp is a popular spot for boaters looking to explore the vast waters of the Lake of the Woods. It is important to follow all rules and regulations to ensure a safe and enjoyable boating experience.