Castle Island Road 484 boat ramp in Mount Vernon, Maine is a concrete boat ramp that provides access to the Belgrade Lakes chain of lakes. The boat ramp is approximately 16 feet wide and can accommodate small to medium-sized boats. The body of water it services is East Pond, which is part of the Belgrade Lakes system.

According to the Maine Department of Inland Fisheries and Wildlife, the Belgrade Lakes chain of lakes is a popular destination for recreational boating, fishing, and water sports. The lakes are home to a variety of fish species, including largemouth and smallmouth bass, northern pike, and yellow perch.

As for the kind of craft permitted on the water, the Maine Department of Environmental Protection states that motorized boats are allowed on the Belgrade Lakes, but there are restrictions on the use of personal watercraft (jet skis). Additionally, there are rules regarding speed limits and noise levels on the lakes, which are designed to protect the environment and ensure the safety of all boaters.

Overall, Castle Island Road 484 boat ramp provides a convenient access point for those looking to enjoy the recreational opportunities of the Belgrade Lakes chain of lakes.