The Ferry Dock King County boat ramp is located at latitude 47.50872803 and longitude -122.46408844 in Washington state. It is a public boat ramp that provides access to the waters of Elliot Bay, a part of the greater Puget Sound. The boat ramp is approximately 25 feet wide and can accommodate a variety of watercraft, including powerboats, sailboats, kayaks, and canoes.

The Ferry Dock King County boat ramp is managed by King County Parks and is open year-round. The ramp is designed to provide easy access to the water for boaters of all skill levels, with a gradual slope and plenty of space for launching and retrieving boats. The ramp also features a dock for loading and unloading passengers and gear.

In terms of permitted watercraft, the Ferry Dock King County boat ramp allows for a variety of vessels, including motorized and non-motorized boats, sailboats, and personal watercraft. However, it is important to note that certain safety regulations and requirements may apply based on the size, type, and horsepower of the vessel being launched.

Overall, the Ferry Dock King County boat ramp is a convenient and accessible option for boaters in the greater Seattle area, offering easy access to Elliot Bay and the surrounding waters of Puget Sound.