Matchbox Naval Fleet By Phil Warren

Modern fleets combine surface warships, submarines, support ships and ship-based aircraft to conduct naval operations at sea. Generally understood to be the blue water, or oceanic, green water or littoral versus the brown water or coastal/riverine forces. The fleets of larger navies are usually divided into smaller numbered or named fleets based on geographic operating areas or on administrative groupings of same type ships.
Modern fleets are usually administrative units. Typically individual task forces are formed to conduct specific operations.