Based on the latest information available, the Odessa Campground boat ramp is located in southern Oregon, specifically in Klamath County. It is situated near the town of Keno, and its coordinates are latitude: 42.43085098 and longitude: -122.06043243.

The Odessa Campground boat ramp is a concrete boat ramp that provides access to the Klamath River. The ramp is relatively wide, with a width of approximately 25 feet. This width allows for larger boats to launch with ease and makes it easy for multiple vessels to launch simultaneously.

The Klamath River is the body of water that the Odessa Campground boat ramp services. The Klamath River is a popular destination for fishing, boating, and other recreational activities. It flows through southern Oregon and northern California, and it spans approximately 263 miles.

As for the kind of craft that are permitted on the water, the Klamath River is open to a variety of watercraft, including powerboats, kayaks, canoes, and rafts. However, it is important to note that the river's water levels can fluctuate throughout the year, and some sections of the river may be more suitable for certain types of watercraft than others. It is always recommended to check local regulations and conditions before launching any vessel.

In summary, the Odessa Campground boat ramp is a concrete boat ramp located in Klamath County, Oregon. It services the Klamath River and is suitable for a variety of watercraft, including powerboats, kayaks, canoes, and rafts. The ramp is approximately 25 feet wide and can accommodate multiple boats launching simultaneously.