Dockton Park and Marina

Location

9500 Southwest Dock Street, Vashon, Washington 98070

Nearby Bus Stops

Bus 119 - Dockton Park is about a 12-minute walk (0.4 miles) from Stop #46822 at Southwest 264th Street and 99th Avenue Southwest 

Parking

Day-use parking is available on-site including boat trailer spots. No overnight parking.

Moorage

Spaces for 30 boats are available on a first-come, first-served basis with a maximum stay of three nights. If staying for any period between 8 p.m. - 8 a.m., please pay for moorage at the self-serve kiosk located at the marina building and attach moorage ticket to boat so that staff can see it from the dock.

2022 moorage fees

• $20 per night for boats up 26 feet
• $25 per night for boats 26 to 32 feet
• $30 per night for boats over 32 feet

Yearly dinghy moorage is also available through our Regional Scheduling office. There are 20 cleats allocated for dinghy moorage.

Please call Regional Scheduling at (206) 477-6150 to register your dinghy and get a cleat assignment.  Current fee is $100 per year (subject to change).

Marina and Playground Improvements

Phase 2 of Dockton Marina Improvements Begins August 1 

From August 1 through September 30, 2025, the Dockton Park Marina will undergo Phase 2 of its improvement project. Construction activities will include: 

• Replacing the breakwater
• Replacing all finger piers
• Upgrading the boat ramp dock
• Replacing the floating dock at Dockton Moorage 

Access Impacts: 
During this time, the entire dock area—including the boat ramp and floating dock—will be closed to the public. 

Open During Construction: 
The playground and picnic area will remain open and accessible throughout the duration of the project, but parking may be reduced due to construction activities 

Project Timeline: 
This project is limited by Federal and State environmental permits, which restrict work to a narrow window between August 1 and September 30 to protect local endangered species. We recognize this timing overlaps with prime boating season. However, any delay would postpone construction until the same window next year, as this type of in-water work is not permitted outside this seasonal window. 

Both the boat ramp dock and the moorage breakwater are in urgent need of replacement. Further delays could lead to worsening structural conditions and longer, unplanned closures that could not be addressed until the next summer construction period. 
 
We appreciate your understanding and patience as we complete these necessary upgrades to improve safety, functionality, and long-term use of the marina. 

For updates, please check back on this page.

Previous work

A multi-year project consisting of two phases is underway to improve the Dockton Marina. Completed in May 2022, Phase 1 replaced various piles and finger piers internally on the dock. Other improvements include new swim dock, fire suppression system, sewage pump out station, hardware replacements, nonskid coating, fixed pier cross bracing replacement (under bathroom). The new dock is constructed with plastic grating that lets light through and creates better habitat for sea life.  

The new Dockton playground is now open! Keeping with the maritime nature of the park, the new playground is a ship-themed play structure with improved ADA accessibility, two slides, swings, a net climber, musical instruments, spinning rope climber, and more. Learn more about the new playground on the King County Parks blog.