Larson's Seaplane Base
Daylight today(Sep 4, 2026, local time)
About 13h 3m 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 Larson's Seaplane Base
Larson's Seaplane Base is a seaplane base in Tyngsboro, United States. It sits at an elevation of 90 ft (27 m) and has 1 runway, the longest 2,500 ft / 762 m. It observes America/New York local time. The nearest airport is Steck Farm Airport (NH78), about 4 nm to the nne.
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 (1)
| Runway | Length | Width | Surface | Lighting | Status |
|---|---|---|---|---|---|
| 13W / 31W | 2,500 ft / 762 m | 400 ft | Water | Unlit | Open |
Tall obstacles nearby
| Obstacle | Height AGL | Top (MSL) | Lit |
|---|---|---|---|
| Obstacle | 499 ft | 499 ft | — |
| Obstacle | 469 ft | 446 ft | — |
| Obstacle | 322 ft | 486 ft | — |
| WUML-FM | 305 ft | 121 ft | — |
| Obstacle | — | 374 ft | — |
Tallest obstacles within ~10 nm. Data via OpenAIP. Reference only — consult official charts.
Nearby airports
Great-circle distance and true bearing from Larson's Seaplane Base.
Frequently asked questions
Where is Larson's Seaplane Base located?
Larson's Seaplane Base is seaplane base located in Tyngsboro, United States, at an elevation of 90 ft (27 m).
How many runways does Larson's Seaplane Base have?
Larson's Seaplane Base has 1 runway, the longest being 2,500 ft / 762 m.
What time zone is Larson's Seaplane Base in?
Larson's Seaplane Base is in the America/New York time zone (UTC-04:00).
What is the magnetic variation at Larson's Seaplane Base?
The magnetic variation (declination) at Larson's Seaplane Base is approximately 13.9° W, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
What airports are near Larson's Seaplane Base?
The nearest airport to Larson's Seaplane Base is Steck Farm Airport (NH78), about 4 nm to the nne, followed by Pepperell Airport and Nashua Airport / Boire Field.
Is the information on this page suitable for flight planning?
No. Larson's Seaplane Base data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.