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The Operations Room (also known as Combat Information Center or under the British system, Action Information Centre) is the tactical center of a warship or AWAC aircraft providing processed information for command and control of the near battle space or 'area of operations'. Within other military commands, rooms serving similar functions are called by the similar "Command Information Center" or simply "Command Center"; the number of different terms for spaces that serve much the same function may explain why the plain and generally non-descriptive "Operations Center" is a prevalent term.
Regardless of the vessel or command locus, each CIC organizes and processes information into a form more convenient and usable by the commander in authority. Each CIC funnels communications and data received over multiple channels, which is then organized, evaluated, weighted and arranged to provide ordered timely information flow to the battle command staff under the control of the CIC officer and his deputies.
Operations Rooms are widely depicted in film and television treatments, frequently with large maps, numerous computer consoles and radar and sonar repeater displays or consoles, as well as the almost ubiquitous grease-pencil annotated polar plot on an edge-lighted transparent plotting board. At the time the CIC concept was born, the projected map-like polar display (PPI scopes) with the ship at the center was making its way into radar displays displacing the A-scope which was simply a time-delayed blip showing a range on an oscilloscope Cathode Ray Tube.
Such polar plots are used routinely in navigation and military action management to display time-stamped range and bearing information to the CIC decision makers. A single 'mark' (range and bearing datum) bears little actionable decision-making information by itself. A succession of such data tells much more, including whether the contact is closing or opening in range, an idea of its speed and direction (these are calculable, even from bearings-only data, given sufficient observations and knowledge of tactics), the relation to other contacts and their ranges and behaviors. Harvesting such data sets from the polar plots and computers (Common to sonar, radar and lidar) allows the CIC crew to plot the data correctly on a chart or map at the correct range and bearing, and to calculate the course and speed of the contact accurately, giving the set a vast expansion to include future positions, given unchanged relative courses and relative speeds.
The Operations Room in the naval context brings together and manages information on the warship's status and its surroundings, and supplies this to the commanding officer, who would generally be present on the nearby bridge or where plots can be viewed and, if one is aboard, a flag officer who might have their own separate "flag bridge" and Fleet CIC. The 'Operations Room' or 'Operations Center' in other command contexts has the same function: information ordering, gathering, and presentation to the decision makers whether it is to a prime minister, general, or local police chief. The types and controls over the collection of information, the communications systems may vary, but the task or mission of providing clarification of the situation and options to the commander remain the same whether the Ops Center is located on a submarine, surface ship, or airplane.
Some control, assistance, and coordination functions may be delegated to the operations room staff or directly to the CIC officer, such as overseeing the mode and prioritization of sensor resources such as radar monitoring, targeting, or sonar activities; communications to external sources and assets. CIC is sometimes referred to by Operations Specialists as "Christ I'm Confused".
On US aircraft carriers this area is called the combat direction center (CDC). The United States developed their Command Information Center concept circa the winter of 1942–1943 and implemented it in a surge of refitting and retraining during 1943 after post-battle action analyses of battles in 1942 from the battle of the Coral Sea through the losses at Ironbottom Sound during the protracted Solomon Islands campaign.
In British usage this area may be known as an Aircraft Direction Room; together with the Operations Room they form an "Operations Headquarters". The British Aircraft Direction Room evolved from the Fighter Direction Office, a primitive means of controlling an aircraft carrier's aircraft through radio and radar.
The idea of such a centralised control room is surprisingly old; it can be found in science fiction as early as The Struggle for Empire (1900). Early versions were used in the Second World War; according to Rear Admiral Cal Laning, the idea for a command information center was taken “specifically, consciously, and directly” from the spaceship Directrix in the Lensman novels of E. E. Smith, Ph.D., and influenced by the works of his friend and collaborator Robert Heinlein, a retired American naval officer. After the numerous losses during the various naval battles off Guadalcanal during the war of attrition that was part and parcel of the Solomon Islands campaign and the Battle of Guadalcanal, the United States Navy employed operational analysis, determined many of their losses were due to procedure and disorganization, and implemented the Combat Information Centers, building on what was initially called "radar plot" according to an essay "CIC Yesterday and Today" by the Naval Historical Center. That same article points out that in 1942 radar, radar procedure, battle experiences, needs, and the CIC all grew up together as needs developed and experience was gained and training spread, all in fits and starts, beginning with the earliest radar uses in the Pacific battles starting with the Coral Sea, when radar gave rise to the first tentative attempt to vector an Air CAP to approaching Japanese flights, maturing some before the Battle of Midway, where post-battle analysis of Coral Sea's results had given more confidence in the ability and to the process and the desire was bolstered by new procedures giving their measure of added confidence.
The Naval Historical Center essay notes that growing the responsibility of the nascent CIC organization necessarily upset the old order of doing, who was reporting to whom, and most of all, of communications protocols where now CICs within a task group were, when possible, joined in permanent communication links to even the lowliest destroyer escort or fleet auxiliary, adding the eyes and reports of their lookouts to those of similar watch-standers about the fleet as a whole. In short the CICs continually grew for a time, superseding old organizational structure and supplanting them with a new system filtering and shaping information to a newly empowered command group. The tasks and facilities put at the service of the CICs also grew within a ship. While in 1943 a destroyer CIC might just have been configured for anti-ship and anti-submarine warfare tasks, by the Battle of the Philippine Sea when set out as radar pickets had to undertake forward air controller (FAC) functions and somehow jam in air search radar and anti-air action control functions.
From that beginning, were added the corporate experiences of the continuing series of naval air and naval surface actions around and about the Battle of Guadalcanal in the Solomon Islands campaign. By late 1943 when the first new construction carriers of the Essex-class fleet carriers and the Independence-class light carriers with many associated fleet vessels had reinforced the refitted USS Enterprise (CV-6) and the USS Saratoga (CV-3), the U.S. Navy was prepared to take the offensive and began evolving CIC procedures and operational doctrine for a fleet of carriers.
There has been an evolution of electronics (computer) equipment and user interfaces used in such installations over time. Modern Operations Room equipment is built up from many connected embedded systems.