what is it?
The Marinens Flyvebaatfabrikk M.F.11 (or Høver M.F.11, for its designer) was a three-seat, single-engine biplane used by the Royal Norwegian Navy Air Service for maritime reconnaissance in the decade before the Second World War. The M.F.11 was the main aircraft of the Royal Norwegian Navy Air Service (RNoNAS) until the German invasion of Norway in 1940.
How to recognise it: 1 piston engine with propeller · floatplane · 15.4 m wingspan
base stats
Bars compare against all aircraft: 3,500 km/h, 20,000 km, 850 seats; size and number built on a log scale up to 640 t (An-225) and 45,000 built (Cessna 172).
fun facts
- First flew 95 years ago, in 1931.
- Top speed is 1.8× a car on the Dutch motorway (130 km/h).
- Wingspan of 15.4 m: about 3 cars parked nose to tail.
piston: A car-like piston engine turning a propeller: simple and cheap, the classic small plane.
spec sheet
- first flight
- 1931-09-29
- introduced
- 1932
- number built
- 29
- role
- maritime reconnaissance
- makers
- Marinens Flyvebaatfabrikk
- engines
- 1× Armstrong Siddeley Panther IIA
- length
- 11.7 m
- wingspan
- 15.4 m
- height
- 4.5 m
- max take-off weight
- 2,850 kg
- top speed
- 235 km/h
- cruise speed
- 170 km/h
- range
- 800 km
- ceiling
- 4,999 m
- landing gear
- floatplane
Specs are for the version in the Wikipedia article's specification section. Blank means the sources don't say.
Sources: Wikidata Q1546529, Wikipedia: Marinens Flyvebaatfabrikk M.F.11 (CC BY-SA 4.0).Updated 2026-10-24.