ESFR sprinkler heads output rate - 100 gallons per minute. Droplet size - ESFR sprinkler heads release larger droplets of water with greater momentum than conventional heads. This combination of size and momentum allows the sprinkler droplet to penetrate a fire plume and reach the seat of a fire.
Definition of fleet for Students. 1  1 : a group of warships under one commander. 2  2 : a country's navy. 3  3 : a group of ships or vehicles that move together or are owned by one company a fishing fleet a fleet of taxis.
Most fleets are named after that ocean or sea, but the convention in the United States Navy is to use numbers. A fleet is normally commanded by an admiral, who is often also a commander in chief, but many fleets have been or are commanded by vice admirals or even rear admirals. Most fleets are divided into several squadrons, each under a subordinate admiral. Those squadrons in turn are often divided into divisions.