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W55 Kenmore Air Seaplane Base
Seattle, Washington, USA

GOING TO SEATTLE?

FAA INFORMATION EFFECTIVE 19 FEBRUARY 2026

Location

FAA Identifier: W55
Lat/Long: 47-37-44.3530N 122-20-19.4560W
47-37.739217N 122-20.324267W
47.6289869,-122.3387378
(estimated)
Elevation: 14 ft. / 4 m (estimated)
Variation: 20E (1985)
From city: 1 mile N of SEATTLE, WA
Time zone: UTC -8 (UTC -7 during Daylight Saving Time)
Zip code: 98109

Seaplane Base Operations

Seaplane Base use: Open to the public
Activation date: 09/1947
Control tower: no
ARTCC: SEATTLE CENTER
FSS: SEATTLE FLIGHT SERVICE STATION
NOTAMs facility: SEA (NOTAM-D service available)
Attendance: DAWN-DUSK
Wind indicator: yes
Segmented circle: no
Landing fee: no, $150 TRANSIT DOCKING FEE.
International operations: customs landing rights airport

Seaplane Base Communications

CTAF: 122.9
WX ASOS at BFI (6 nm S): PHONE 206-658-6435
WX ASOS at RNT (10 nm SE): 126.95 (425-255-6080)
WX ASOS at SEA (11 nm S): PHONE 206-214-2592
WX ASOS at PAE (17 nm N): PHONE 425-355-6192
WX AWOS-3PT at PWT (19 nm SW): 121.2 (360-674-2811)

Nearby radio navigation aids

VOR radial/distance  VOR name  Freq  Var
SEAr335/11.7SEATTLE VORTAC116.8019E
PAEr168/17.6PAINE VOR/DME110.6020E

Seaplane Base Services

Bottled oxygen: NONE
Bulk oxygen: NONE

Runway Information

Runway 16W/34W

Dimensions: 5000 x 500 ft. / 1524 x 152 m
Surface: water
RUNWAY 16W  RUNWAY 34W
Traffic pattern: leftleft

Seaplane Base Ownership and Management from official FAA records

Ownership: Privately-owned
Owner: GREEN HORNET ENTERPRISES LLC, ET AL
P O BOX 82064
KENMORE, WA 98028
Phone 425-486-1257
OWNERS: GREEN HORNET ENTERPRISES LLC AND MUNRO BANKS HOLDCO INC.
Manager: SARAH FELLER
950 WESTLAKE AVENUE N
SEATTLE, WA 98109
Phone 425-486-1257
EXTN 2240.

Additional Remarks

- APCH SURFACE DATA NOT CHECKED.
- FUEL AVBL EMERG ONLY.
- KENMORE AIR LAKE UNION DOCK FREQ 130.30.
- FOR CD CTC SEATTLE APCH AT 206-214-4722.
- FIVE TEMPO BUOYS HAVE BEEN PLACED ALONG THE NORTH-SOUTH CNTRLN OF LAKE UNION, EACH SEPARATED BY APPROXIMATELY 750FT, AND MARK THE APRX LOCATION OF THE PREFERRED SEAPLANE OPR AREA. THE BUOYS HAVE A YELLOW FLASHING LIGHT THAT CAN BE ACTVT BY FIVE CLICKS ON 122.9, TO ALERT BOATERS OF AN IMPENDING SEAPLANE TKOF OR LANDING. RUN TIME ON THE LIGHTS IS 60 SECONDS. THE BUOY/LIGHT SYSTEM IS ADVISORY ONLY, AND BOATERS ARE NOT REQUIRED TO CLEAR THE AREA. THE BUOYS WILL BE REMOVED WITHIN FIVE DAYS FOLLOWING LABOR DAY, OR EARLIER.
- INCRD BOATING OPNS ON LAKE MAY 15 THRU SEP 15.
- SPECIAL NOISE ABATEMENT RULES IN EFFECT CONTACT OPERATOR FOR PATTERN INFORMATION.
- KITE FLYING IN PUBLIC PARK AT N END OF ARPT AND UAVS OPERATING AT THE N AND S ENDS.
- NIGHT LANDINGS NOT RECOMMENDED DUE TO UNLIGHTED SMALL WATERCRAFT.
- DO NOT TAXI CLOSER THAN 200 FT FM SHORELINE EXCP IN CLOSE PROXIMITY TO KENMORE AIR HARBOR.
- ALL TAKEOFFS & LANDINGS IN CENTER OF LAKE.
- WHEN CONSISTENT WITH SAFETY, AVOID 'ON THE STEP' OPERATIONS SOUTH AND WEST OF RED BUOY.
- CALL 425-486-1257 X2010 FOR APVL AT LEAST 3 HRS PRIOR TO ARR. DOCKING FEE.

Instrument Procedures

There are no published instrument procedures at W55.

Some nearby airports with instrument procedures:

KBFI - Boeing Field/King County International Airport (6 nm S)
KRNT - Renton Municipal Airport (10 nm SE)
KSEA - Seattle-Tacoma International Airport (11 nm S)
KPAE - Seattle Paine Field International Airport (17 nm N)
S50 - Auburn Municipal Airport (19 nm S)
S43 - Harvey Field Airport (19 nm NE)
KPWT - Bremerton National Airport (19 nm SW)
  
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Area around W55 (Kenmore Air Seaplane Base)
 
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Aerial photo
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Aerial photo of W55 (Kenmore Air Seaplane Base)
Photo taken 24-Jan-2007
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From to W55

Sunrise and sunset
Times for 14-Mar-2026
 Local
(UTC-7)		 Zulu
(UTC)
Morning civil twilight06:5513:55
Sunrise07:2514:25
Sunset19:1202:12
Evening civil twilight19:4302:43

Current date and time
Zulu (UTC)  15-Mar-2026 02:02:23
Local (UTC-7)  14-Mar-2026 19:02:23
 
METAR
KBFI 
5nm S 		150153Z 05006KT 10SM CLR 07/01 A3038 RMK AO2 SLP287 T00670006
KRNT 
9nm SE 		150153Z 10004KT 10SM CLR 07/01 A3038 RMK AO2 SLP292 T00720006
KSEA 
11nm S 		150153Z 05006KT 10SM SCT030 SCT120 BKN250 06/M02 A3037 RMK AO2 SLP292 T00611017 $
KPAE 
17nm N 		150153Z 00000KT 10SM CLR 06/M03 A3037 RMK AO2 SLP289 T00561033
KPWT 
18nm SW 		150156Z AUTO 06005KT 10SM CLR 05/02 A3037 RMK AO2 SLP291 T00500017
TAF
KBFI 
5nm S 		141911Z 1419/1518 12003KT P6SM VCSH BKN010 BKN018 BKN040 TEMPO 1419/1421 -SHRA FM142100 24007KT P6SM BKN040 FM150600 15005KT P6SM OVC100
KSEA 
11nm S 		142119Z 1421/1524 VRB04KT P6SM SCT018 SCT050 BKN250 FM150000 19004KT P6SM SCT050 SCT100 FM150600 12005KT P6SM OVC100 FM151800 12005KT P6SM OVC070
KPAE 
17nm N 		141912Z 1419/1518 28004KT P6SM VCSH BKN014 BKN040 TEMPO 1419/1421 -SHRA FM142100 32005KT P6SM BKN040 FM150300 15004KT P6SM OVC100
KPWT 
18nm SW 		141911Z 1419/1518 VRB04KT P6SM SCT009 BKN040 FM142000 VRB03KT P6SM SCT015 BKN040 FM142200 22006KT P6SM FEW040 SCT100 FM150600 00000KT P6SM SCT004 OVC100 FM150900 00000KT P6SM OVC004 FM151500 00000KT P6SM OVC100
NOTAMs
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