fifth fleet
Operation urgent Lightning
1970s
There is no set number; like all fleet commands around the world, the number of naval assets assigned to 2nd Fleet changes constantly. This is because ships form different Task Forces, Battle Groups, etc., and may leave the 2nd Fleet's operational command area and enter another, or they're formed/assigned as tactical considerations warrant. Ships and other assets that might be assigned to 2nd Fleet's command may be from another Fleet; it depends on the situation and needs of the Navy.
A zone of action is an area of responsibility defined by boundaries and assigned to a military unit in any situation involving action.
What country? For the US, a Fleet is an Area Of Responsibility, not a group of ships, which also has many names. Be more specific.
the western portion of the Indian ocean, the red and Arabian seas
The Third Fleet's area of responsibility encompasses the eastern and northern Pacific Ocean, including the waters surrounding the coasts of the continental United States and parts of Alaska and Hawaii. It plays a crucial role in maritime security, projecting naval power, and supporting various operations, including humanitarian assistance and disaster relief. The fleet operates in coordination with other military branches and allied forces to ensure regional stability and readiness.
Southeast Area Fleet was created in 1942.
Southwest Area Fleet was created in 1942.
Northeast Area Fleet ended in 1944.
Northeast Area Fleet was created in 1943.
The actual number changes periodically and is classified. Most numbers that you'll see in media outlets are estimates of force numbers. Actual fleet configuration and numbers is considered critical data that can be used by an enemy for attack planning, which is the reason it is not released as a definitive number to the public.