Based on the latest information available, the Hamlin Lake-W boat ramp is a concrete ramp located in Mason County, Michigan. It is approximately 20 feet wide and provides access to Hamlin Lake, which spans over 5,350 acres. The latitude of the ramp is 44.03345108 and the longitude is -86.49187469.

Hamlin Lake is a popular destination for boaters, fishermen, and swimmers, and the boat ramp allows for easy access to the water. A variety of watercraft are permitted on the lake, including motorboats, canoes, kayaks, and sailboats. However, there are restrictions on the size and horsepower of motorized boats allowed on the lake.

It's important to note that regulations and restrictions may change over time and vary depending on the season, so it's always a good idea to check with local authorities or the Michigan Department of Natural Resources for the latest information before heading out onto the water.