Based on the available information, the boat ramp named US 14 Greybull is located at latitude 44.48889542 and longitude -108.0466156 in Wyoming. It is a public boat ramp that provides access to the Greybull River. According to the Wyoming Game and Fish Department, this boat ramp is approximately 15 feet wide, which should be sufficient for most small to medium-sized watercraft.

The Greybull River is a popular destination for fishing, and anglers can expect to catch brown, rainbow, and cutthroat trout. As such, the kind of craft permitted on the water are typically small fishing boats, kayaks, and canoes. Motorized boats with a maximum horsepower rating of 10 are also allowed on the river.

It is important to note that regulations and guidelines for boat ramps and watercraft use can change over time. It is therefore recommended to verify the latest information from the authorities responsible for managing the specific water body before visiting.