Gressholmen Seaplane Base
Daylight today(Oct 14, 2026, local time)
About 10h 21m 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 Gressholmen Seaplane Base
Gressholmen Airport was a water aerodrome situated on the island of Gressholmen in Oslo, Norway. It served as the main airport for Oslo from 1927 to 1939, along with Kjeller Airport. The aerodrome consisted of docks, a landing ramp, terminal building and a hangar and used a section of the Oslofjord as its runway. Being located on an island it was necessary to transport passengers by boat to the island. The airport only operated during the summer, typically from May through September.
Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.
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 (0)
No runway data recorded for this airport.
Airspace in this area(9)
| Name | Class | Type | Floor | Ceiling |
|---|---|---|---|---|
| OSLO TMA | Class C | TMA | 2500 ft MSL | FL215 |
| OSLO TMA | Class C | TMA | 4500 ft MSL | FL215 |
| POLARIS CTA 6 | Class C | CTA | FL095 | FL660 |
| POLARIS CTA | Class C | CTA | FL195 | FL660 |
| OSLO TMA | Class C | TMA | 3000 ft MSL | FL215 |
| OSLO RMZ/TMZ | Class G | RMZ | GND | 2500 ft MSL |
| EN-R112 OSLO 2 NOTAM | Special use | Restricted | GND | FL999 |
| POLARIS ACC OSLO | Special use | Type 27 | GND | FL999 |
| POLARIS ACC OSLO | Special use | Type 27 | GND | FL999 |
Approximate bounding-box match from OpenAIP · all Norway airspace. Reference only — consult official charts for exact boundaries and status.
VFR reporting points nearby
| Point | Distance | Bearing | Reporting |
|---|---|---|---|
| HAUKÅSEN | 5.6 nm | 077° | On request |
| MARIDALSVANNET | 6.3 nm | 019° | On request |
| AUREVANN | 10.5 nm | 312° | On request |
| SOLLIHØGDA | 11 nm | 292° | On request |
| NITTEDAL | 11.2 nm | 027° | On request |
| SVELLE | 12.2 nm | 081° | On request |
| MIDTØY | 14.2 nm | 098° | On request |
| TRANBY | 14.2 nm | 252° | On request |
| TOMTER | 15.9 nm | 147° | On request |
| SØRUM | 16.6 nm | 065° | On request |
Named VFR reporting points within ~20 nm; distance and bearing are from the airport reference point. Data via OpenAIP. Reference only — check the current VAC/AIP for procedures and whether a report is required.
Tall obstacles nearby
| Obstacle | Height AGL | Top (MSL) | Lit |
|---|---|---|---|
| Tryvann hovedsender | 686 ft | 1,677 ft | — |
| Tryvannstårnet | 394 ft | 1,699 ft | — |
| Radisson Blu Plaza Hotel, Oslo | 384 ft | 46 ft | — |
| Røverkollen telesenter | 384 ft | 1,260 ft | — |
| Brannfjell | 344 ft | 623 ft | — |
| Brobekk forbrenningsanlegg | 285 ft | 400 ft | — |
| Klemetsrud | 262 ft | 479 ft | — |
| Obstacle | 262 ft | 479 ft | — |
Tallest obstacles within ~10 nm. Data via OpenAIP. Reference only — consult official charts.
Frequently asked questions
Where is Gressholmen Seaplane Base located?
Gressholmen Seaplane Base is closed located in Oslo, Norway.
Is the information on this page suitable for flight planning?
No. Gressholmen Seaplane Base data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.