Based on the information available, County Road 400 848 boat ramp in Shelby, Alabama is a public boat ramp that provides access to the Coosa River. It is a concrete ramp that is approximately 20 feet wide, making it suitable for launching small to medium-sized boats. The coordinates provided indicate that the boat ramp is situated on the eastern bank of the Coosa River, near Shelby County Road 400.

The Coosa River is a popular waterway for recreational activities such as fishing, boating, and swimming. According to the latest information available from the Alabama Department of Conservation and Natural Resources, the Coosa River is home to a variety of fish species, including bass, catfish, and crappie. The Department also notes that the river is suitable for a range of boating activities, including power boating, sailing, and kayaking.

In terms of craft permitted on the water, it is important for boaters to comply with Alabama state boating laws and regulations. These regulations require all boats to have the necessary safety equipment on board, including life jackets and fire extinguishers. Additionally, boats with motors must be registered with the state and display the appropriate decals.

In summary, County Road 400 848 boat ramp in Shelby, Alabama is a public boat ramp that provides access to the Coosa River. It is a concrete ramp that is approximately 20 feet wide, suitable for launching small to medium-sized boats. The Coosa River is a popular destination for recreational activities such as fishing and boating, and a variety of craft are permitted on the water as long as they comply with state regulations.