After conducting some research, I was unable to find any specific information regarding the boat ramp named Sutton Lake Road 399 in New Hanover County, North Carolina. It is possible that this boat ramp may be commonly referred to by a different name or may not be a commonly used boat ramp in the area.

However, I can provide some general information about boat ramps in the area. Boat ramps can vary in size and type, from small concrete ramps to larger, multi-lane ramps with docks and amenities. The width of the boat ramp will depend on its size and usage.

The body of water that a boat ramp services can also vary. In New Hanover County, there are several bodies of water that are commonly used for boating, including the Cape Fear River, the Intracoastal Waterway, and various lakes and ponds.

Regarding what kind of craft are permitted on the water, this will depend on local regulations and restrictions. Typically, boat ramps will have signs or information posted indicating what types of boats are allowed on the water, such as motorized boats, sailboats, or kayaks. It is always important to check local rules and regulations before launching any watercraft.

In summary, while specific information about the Sutton Lake Road 399 boat ramp was unavailable, boat ramps in the area can vary in size and type, service different bodies of water, and have specific restrictions regarding the types of watercraft allowed. It is always best to check local regulations before launching any watercraft.