Quartermaster Harbor Seaplane Base (69WT) — Vashon, WA

Quartermaster Harbor Seaplane Base (69WT)
69WT
Quartermaster Harbor Seaplane Base (69WT)
Vashon, WA
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Quartermaster Harbor Seaplane Base (69WT) is a private-use seaplane base located in Vashon, WA. The airport sits at an elevation of 0 feet above mean sea level. It features 2 runways. Aviation communications are supported by 1 published radio frequency.

Location & QuickFacts
FAA Information Effective 2026-09-03
Airport Identifier 69WT
Airport Status Operational
Longitude/Latitude 122°27'37.5840" W / 47°23'34.3320" N
-122.460440 / 47.392870 (Estimated)
Elevation 0.00 ft / 0.00 m (Estimated)
From nearest city 3 nautical miles S of Vashon, WA
Location King County, WA
Owner & Manager
Ownership Privately owned
Owner KEVAN YALOWITZ
Address 9745 SW HARBOR DR
VASHON, WA 98070
Phone number 2026412050
Manager KEVAN YALOWITZ
Address 9745 SW HARBOR DR
VASHON, WA 98070
Phone number 2026412050
Airport Operations and Facilities
Airport Use Private
Control Tower NON-ATCT
Sectional chart SEATTLE
Region ANM - Northwest Mountain
Responsible ARTCC ZSE - SEATTLE
Tie-in FSS SEA - SEATTLE
FSS Toll Free 1-800-WX-BRIEF
Airport Communications
CTAF 122.9 MHz
Runway Information
Runway 04W/22W
Dimensions 5637 x 200 ft (1718 x 61 m)
Surface WATER
Surface treatment
04W 22W
Coordinates 47.395210 / -122.461130 47.403190 / -122.441640
Traffic pattern Right Left
Runway 15W/33W
Dimensions 4226 x 200 ft (1288 x 61 m)
Surface WATER
Surface treatment
15W 33W
Coordinates 47.401680 / -122.446780 47.390510 / -122.442250
Traffic pattern Right Left