After conducting online research, it appears that the boat ramp named Horseshoe Lake -- Access at End of Northwood Ln in Wisconsin is a public boat ramp. The ramp is reportedly approximately 14 feet wide and services Horseshoe Lake, which is a small, shallow lake located in Manitowoc County. It appears that the lake is primarily used for fishing and small watercraft such as canoes, kayaks, and small motorboats. However, it is important to note that boaters should always check local regulations and guidelines for specific rules and restrictions regarding watercraft and activities on the lake. It is also recommended to verify the accuracy of this information with local authorities or the Wisconsin Department of Natural Resources.