The Heinkel HD 30 was a biplane reconnaissance seaplane developed by Ernst Heinkel Flugzeugwerke.
== Development == The Heinkel HD 30 was similar in layout to the Heinkel HD 19, but differed from the latter in being larger and having a Gnome-Rhône 9Ak Jupiter VI engine. It was intended to be launched from a steam-powered catapult mounted on small- and medium-sized ships.
== Specifications == Data from General characteristics Crew: Two Length: 10.25 m (33 ft 8 in) Wingspan: 12.40 m (40 ft 8 in) Height: 4.32 m (14 ft 2 in) Wing area: 46.89 m2 (504.7 sq ft) Empty weight: 1,947 kg (4,292 lb) Gross weight: 2,529 kg (5,575 lb) Powerplant: 1 × Gnome-Rhône 9Ak Jupiter VI 9-cylinder air-cooled radial piston engine, 390 kW (520 hp) Propellers: 2-bladed Performance
Maximum speed: 211 km/h (131 mph, 114 kn) Cruise speed: 185 km/h (115 mph, 100 kn) Range: 700 km (430 mi, 380 nmi) Service ceiling: 4,650 m (15,260 ft) Wing loading: 47 kg/m2 (9.6 lb/sq ft)