Which type of helicopter is primarily used for troop transport in amphibious assaults?

The CH-46E Sea Knight is primarily designed for troop transport in amphibious assaults, making it the most suitable choice among the options provided. This helicopter has a proven track record within the Marine Corps for its ability to transport large numbers of troops and equipment efficiently in varied environments, including maritime settings. Its dual-rotor design allows for stability and a larger payload capacity, which is crucial during amphibious operations where speed and agility are needed to establish a foothold on enemy territory.

The CH-46E’s capabilities are tailored for the unique demands of amphibious warfare, such as operating from naval vessels and supporting landing operations directly onto the beach. Its relatively compact size and versatility enable it to access areas that might be challenging for larger helicopters or fixed-wing aircraft.

Other helicopters listed have different primary roles or operational profiles that may not emphasize troop transport in the same way the CH-46E does. While capable helicopters like the UH-1 Huey and CH-53E Super Stallion serve important roles in transport and logistics, the Sea Knight stands out specifically for its focus on the amphibious assault mission.