According to the latest available information, the boat ramp named VT 100 Plymouth is located at latitude 43.47582245 and longitude -72.70254517 in Vermont. This boat ramp is a concrete ramp with a gravel parking area. It is approximately 28 feet wide, which makes it suitable for small to medium-sized boats.

The boat ramp services a body of water known as Echo Lake, which is located in the town of Plymouth, Vermont. Echo Lake is a popular spot for boating and fishing, with a surface area of approximately 310 acres.

As far as the kind of craft permitted on the water, it appears that there are no specific restrictions mentioned for Echo Lake. However, it is important to note that all boaters are required to follow Vermont's boating laws and regulations, which include requirements for safety equipment, operating under the influence, and speed limits.

In summary, the VT 100 Plymouth boat ramp in Vermont is a concrete ramp with a gravel parking area that services Echo Lake. It is approximately 28 feet wide and suitable for small to medium-sized boats. There are no specific restrictions on the type of craft allowed on the water, but all boaters are required to follow Vermont's boating laws and regulations.