Based on the latest information available, the boat ramp named Highway 105 1720 in Tokeland, Washington is a concrete boat ramp that is approximately 12 feet wide. It services the Tokeland Marina and is located on Willapa Bay, which is a large estuary on the Pacific coast of Washington.

The ramp is suitable for launching small to medium-sized watercraft, including boats, kayaks, canoes, and jet skis. The maximum permissible size of a watercraft that can be launched from this ramp is not specified, but it is likely to be based on the width of the ramp and the draft of the watercraft.

It is important to note that regulations regarding the type of watercraft that can be launched from this ramp may be subject to change, and it is advisable to check with local authorities for the latest information before attempting to launch. Users of this boat ramp are also advised to exercise caution and follow all safety guidelines to ensure a safe and enjoyable experience on the water.