Quartermaster Harbor Seaplane Base
Daylight today(Sep 5, 2026, local time)
About 13h 9m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.
About Quartermaster Harbor Seaplane Base
Quartermaster Harbor Seaplane Base is a seaplane base in Vashon, United States. It sits at an elevation of 0 ft (0 m) and has 2 runways, the longest 5,637 ft / 1,718 m. It observes America/Los Angeles local time. The nearest airport is Vashon Municipal Airport (2S1), about 4 nm to the n.
Summary generated from this airport’s structured data — reference only.
Live traffic nearby
Aircraft currently within ~40 nm, from live ADS-B. Positions are approximately real-time — not for navigation.
Live ADS-B by adsb.lol & the OpenSky Network. Not for navigation.
Map
Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.
Runways (2)
| Runway | Length | Width | Surface | Lighting | Status |
|---|---|---|---|---|---|
| 4W / 22W | 5,637 ft / 1,718 m | 200 ft | Water | Unlit | Open |
| 15W / 33W | 4,226 ft / 1,288 m | 200 ft | Water | Unlit | Open |
Airspace in this area(1)
| Name | Class | Type | Floor | Ceiling |
|---|---|---|---|---|
| SEATTLE CLASS B AREA H | Class B | Controlled | 3000 ft MSL | 10000 ft MSL |
Approximate bounding-box match from OpenAIP · all United States airspace. Reference only — consult official charts for exact boundaries and status.
Tall obstacles nearby
| Obstacle | Height AGL | Top (MSL) | Lit |
|---|---|---|---|
| Obstacle | 525 ft | 256 ft | — |
| Obstacle | 525 ft | 30 ft | — |
| Obstacle | 525 ft | 75 ft | — |
| Obstacle | 495 ft | 262 ft | — |
| Obstacle | 453 ft | 269 ft | — |
| Obstacle | 407 ft | 92 ft | — |
| Obstacle | 407 ft | 49 ft | — |
| Obstacle | 407 ft | 43 ft | — |
Tallest obstacles within ~10 nm. Data via OpenAIP. Reference only — consult official charts.
Nearby airports
Great-circle distance and true bearing from Quartermaster Harbor Seaplane Base.
Frequently asked questions
Where is Quartermaster Harbor Seaplane Base located?
Quartermaster Harbor Seaplane Base is seaplane base located in Vashon, United States, at an elevation of 0 ft (0 m).
How many runways does Quartermaster Harbor Seaplane Base have?
Quartermaster Harbor Seaplane Base has 2 runways, the longest being 5,637 ft / 1,718 m.
What time zone is Quartermaster Harbor Seaplane Base in?
Quartermaster Harbor Seaplane Base is in the America/Los Angeles time zone (UTC-07:00).
What is the magnetic variation at Quartermaster Harbor Seaplane Base?
The magnetic variation (declination) at Quartermaster Harbor Seaplane Base is approximately 14.9° E, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
What airports are near Quartermaster Harbor Seaplane Base?
The nearest airport to Quartermaster Harbor Seaplane Base is Vashon Municipal Airport (2S1), about 4 nm to the n, followed by Vaughan Ranch Airfield and Seattle–Tacoma International Airport.
Is the information on this page suitable for flight planning?
No. Quartermaster Harbor Seaplane Base data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.