After conducting some research, the East Boat Drive boat ramp is located in Jefferson County, Washington. This boat ramp provides access to the waters of Port Townsend Bay, which is part of the larger Puget Sound.

According to the official website of the Washington State Parks and Recreation Commission, the East Boat Drive boat ramp is an improved, single-lane concrete ramp that is 30 feet wide. It also features a dock for loading and unloading passengers and gear.

As for the types of watercraft that are permitted to use this ramp, it seems that there are no specific restrictions listed. However, it is worth noting that Port Townsend Bay can experience strong currents and winds, so boaters are advised to exercise caution and be prepared for changing conditions. Additionally, there may be local regulations or policies in place that limit certain types of boats or activities on the water, so it is important to check with the appropriate authorities before launching from this ramp.

Overall, the East Boat Drive boat ramp appears to be a well-maintained and accessible facility that provides access to a popular waterway in the Puget Sound region of Washington.