What type of helicopter is known as the Marine Corps attack helicopter?

The Marine Corps attack helicopter is the Cobra. This aircraft has been a staple in the Marine Corps' aerial capabilities since its introduction in the 1960s. The Cobra's design allows it to provide close air support, anti-tank operations, and armed escort for troop transport helicopters. Its distinguishing features include a narrow fuselage, twin-engine configuration, and the ability to carry a diverse array of weapons, including missiles, rockets, and guns, making it highly effective in combat situations.

The other helicopters listed, while important in their own right, serve different roles. The Huey is primarily recognized as a utility helicopter known for its versatility in troop transport and medical evacuation. The Sea Knight is a tandem rotor helicopter designed for transport rather than attack, and the Osprey is an aircraft that combines the vertical lift capabilities of a helicopter with the speed and range of a fixed-wing plane, primarily used for troop transport and logistics. The unique capabilities of the Cobra to deliver firepower in support of ground troops solidify its status as the Marine Corps attack helicopter.