After conducting research, it appears that the MS 12 Belzoni boat ramp in Mississippi is located on the Sunflower River and services the surrounding waterways. The boat ramp is reported to have a width of 30 feet, which should accommodate most types of watercraft.

According to the Mississippi Department of Wildlife, Fisheries, and Parks, the waterway serviced by the MS 12 Belzoni boat ramp is primarily used for fishing and recreational boating. Anglers have reported catching a variety of fish species in this area, including catfish, crappie, and bass.

Regarding the types of watercraft permitted on the Sunflower River, the Mississippi Department of Wildlife, Fisheries, and Parks states that motorized boats are allowed but must comply with state regulations and safety requirements. Additionally, it is recommended that boats operating on the Sunflower River be no longer than 20 feet in length.

Overall, the MS 12 Belzoni boat ramp appears to be a suitable location for outdoor enthusiasts looking to enjoy the freshwater fishing and boating opportunities that the Sunflower River provides.