Which of the following is a characteristic of Class F airspace?

Class F airspace is characterized by its designation as international airspace. This type of airspace is established for use by international operations and allows for specific regulations and operational procedures distinct from other classes of airspace.

International airspace, often referred to under Class F, is pertinent to areas that are not under the jurisdiction of any single country and typically includes high-altitude routes used by international flights. It is crucial for maintaining safe distances between various aircraft, especially when crossing national boundaries, and facilitates international air traffic management.

While other classifications of airspace like Class D are more focused on operations around airports with air traffic control services, Class F embodies a broader context that encompasses international travel, thereby requiring compliance with various international regulations. The consideration of uncontrolled airspace or federal airways does not encapsulate the primary purpose and definition of Class F airspace, which is primarily oriented towards international navigation and operations.