KM Ekranoplan vs Boeing 747SP
Top speed, range, size and history side by side. Each was built for its own job, so this shows how they differ, not which is better.
The Boeing 747SP is faster: 994 km/h against 500 km/h for the KM Ekranoplan. The Boeing 747SP flies further: 10,800 km against 1,500 km for the KM Ekranoplan. The Boeing 747SP has the wider wingspan: 59.6 m against 37.6 m for the KM Ekranoplan. The KM Ekranoplan is heavier at takeoff: 544 tonnes against 318 tonnes for the Boeing 747SP. The KM Ekranoplan first flew in 1966, 9 years before the Boeing 747SP (1975).
| KM Ekranoplan | Boeing 747SP |
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| Top speed | 500 km/h (311 mph) | 994 km/h (618 mph) |
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| Range | 1,500 km (932 miles) | 10,800 km (6,711 miles) |
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| Length | 92 m (302 ft) | 56.3 m (185 ft) |
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| Wingspan | 37.6 m (123 ft) | 59.6 m (196 ft) |
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| Max takeoff weight | 544 t (1,199,302 lb) | 318 t (701,063 lb) |
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| First flight | 1966 | 1975 |
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| Crew and capacity | Experimental | Up to 331 passengers |
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| Engines | 10 × turbojet | 4 × turbofan |
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| Built by | Alekseyev Design Bureau | Boeing |
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| Country | USSR | USA |
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