After researching online, I was unable to find specific information about the MN 11 boat ramp in Koochiching County, Minnesota. However, based on general information about boat ramps in the area, it is safe to assume that it is a public boat ramp that allows access to a nearby body of water for recreational boating and fishing.

The width of the boat ramp may vary, but most public boat ramps are at least 12 feet wide to accommodate different sizes of boats and trailers. The type of craft allowed on the water will depend on the specific regulations set by the managing agency, but it is common for boats, canoes, and kayaks to be permitted on most bodies of water.

Without knowing which body of water the MN 11 boat ramp services, it is impossible to provide specific information about the size and type of watercraft that are allowed. However, it is important to note that different bodies of water may have different regulations and restrictions regarding boat size, speed limits, and other safety measures. It is always important to check local regulations and obtain any necessary permits before launching a watercraft from a public boat ramp.