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Military Helicopters

How long is a Boeing CH-46 Sea Knight?

A Boeing CH-46 Sea Knight is about 25.4 m (83 ft) long.

What is measured: Tandem-rotor transport helicopter, overall length

Boeing CH-46 Sea Knight (25.4 m) drawn to scale beside a city bus (12 m) and the Statue of Liberty (93 m)
Drawn to scale, from left to right: City bus (12 m), Boeing CH-46 Sea Knight (25.4 m) and Statue of Liberty (93 m).

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How big is that, really?

  • About the same length as a tennis court
  • About 51% of the length of an Olympic swimming pool
  • As long as about 2 city buses end to end
  • About 4 would fit end to end along a football (soccer) pitch
  • As long as about 4 20-foot shipping containers end to end

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Facts about Boeing CH-46 Sea Knight

The CH-46's tandem-rotor design, shared with the Chinook, eliminates the need for a tail rotor.

Source: Boeing historical specs

Military Helicopters

NameSizeCompared with Boeing CH-46 Sea Knight
Mil Mi-3521.5 m (71 ft)0.85×
Westland Sea King22.1 m (73 ft)0.87×
Sikorsky SH-3 Sea King22.1 m (73 ft)0.87×
Mil Mi-14 Haze25.3 m (83 ft)same size
Boeing CH-46 Sea Knight25.4 m (83 ft)this page
Sikorsky CH-54 Tarhe27 m (88 ft)1.1×
Sikorsky CH-53 Sea Stallion27 m (88 ft)1.1×
CH-47 Chinook30.1 m (99 ft)1.2×
CH-53E Super Stallion30.2 m (99 ft)1.2×
Sikorsky CH-53K King Stallion30.2 m (99 ft)1.2×

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