Extending modernization of US Navy aircraft carrier

USS John C. Stennis passes in Newport News a prolonged modernization of RCOH. The Nimitz aircraft carrier will receive SPY-6 radar, and delays in work show how heavy the burden for the US Navy remains to maintain the largest warships.

USS John C. Stennis mid-service

USS John C. Stennis entered service in December 1995. Since May 7, 2021, he has been at the Newport News Shipbuilding shipyard, where RCOH passes, i.e. the replacement of fuel rods, a comprehensive review and modernization of the ship. That's the seventh Nimitz aircraft carrier covered by that. scope of work.

This is not just a temporary renovation. In the case of Nimitz RCOH nuclear carriers, it is about half the planned, over 50 years of service. After the work is completed, the ship is to return to the fleet for decades to come.

The first major stage ended on 8 April 2024 when the aircraft carrier left the dry dock and was moved to the equipment wharf. According to information from the U.S. Navy of April 2025, RCOH's work was then done in more than half, and the ship's transfer was planned for October 2026.

RCOH is more than fuel exchange

RCOH covers not only the replacement of nuclear fuel, but also a wide range of repair and modernisation work. These include a ship gym, installation, aircraft equipment, electronic systems, structural components and auxiliary weapons.

During the stay in the dry dock work was carried out inside and outside the hull. These included, among others, the operation of reactors, the inspection of tanks, the replacement of valves, pipeline work, power installations and systems responsible for conducting air operations.

After leaving the dock, the ship was subjected to the stage of equipping, testing and preparing the crew for re-use of the aircraft carrier.

In practice, RCOH is one of the most difficult shipbuilding operations carried out on warships. It combines refurbishment, reconstruction, modernization and re-integration of systems on a ship, which resembles with size and complexity floating air base.

AN/SPY-6(V)2 for Nimitz aircraft carriers

The most important element of the renovation USS John C. Stennis is the installation of the AN/SPY-6(V)2 radiolocation system. It is a variant of the SPY-6 family intended, among others, for Nimitz carriers and landing ships. Unlike AN/SPY-6(V)3, intended for aircraft carriers of type Gerald R. Ford, AN/SPY-6(V)2 uses a rotary antenna.

The system is intended to replace older radiolocation stations used on Nimitz carriers and to increase the ability to observe the air and water situation. It will also support air traffic control, early warning and the use of ship defence systems. Although the aircraft carrier operates in the aircraft carrier group's composition, its own sensors remain an important element of the team's situational awareness.

This means that an aircraft carrier designed even during the Cold War will receive solutions currently used on the latest U.S. Navy ships. Stennis After the work is completed, it will not be a new aircraft carrier but will return to service as one of the most modern Nimitz ships.

Delays, costs and problem of shipbuilding

Proceedings on board USS John C. Stennis are also an example of an increasing burden on the American shipbuilding facility. Half of the service has been extended compared to the original schedule, and the US Navy budget documents have added additional costs due to delays, contractual changes and enlargement scope of work.

This is not an isolated case. Previously, similar problems related to the RCOH carrier USS George Washington(CVN 73). With ships of this size, shifts of schedule affect not only the repair program itself, but also the state of completion of US Navy impact forces. A longer stay of an aircraft carrier at a shipyard means a higher burden on other ships and makes it difficult to plan the presence of aerodrome groups on the most important waters.

Shipyards decide on fleet readiness

Newport News Shipbuilding remains the only facility in the United States capable of building and performing RCOH nuclear-powered carriers. In the case of the U.S. Navy, this means maintaining unique industrial competences, which cannot be replicated quickly in the event of delays or overburdening the plant.

Thus, each delay affects not only the schedule of a single ship, but also the availability of US Navy aerodrome groups. For the fleet maintaining a permanent presence on the most important waters, the efficiency of the ship base remains one of the conditions for maintaining readiness. US Navy.