Thales to supply optronic mast for Royal Navy's Dreadnought class submarines.

Thales Glasgow has recently been granted a significant defense contract valued at £169 million, as stated in a press release issued by the firm on July 14, 2023.
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Artist rendering of the future Dreadnought class submarine. (Picture source: BAE Systems)

The contract entails the construction of the integrated optronic combat system mast, which will serve as the above water 'eyes' for the Royal Navy's forthcoming nuclear deterrent submarine, the Dreadnought class.

Thales has a longstanding history of supplying periscopes and optronics masts for Royal Navy submarines, with every submarine in service since 1917 being equipped with their technology.

The continuation of this partnership with the Dreadnought version not only upholds tradition but also supports over 150 jobs at Thales. Furthermore, the entire Dreadnought program, encompassing design and construction, is expected to contribute to the growth of the UK economy by providing around 30,000 jobs across the country.

The optronic combat system mast represents an innovative advancement over traditional periscopes. It offers improved electronic stabilization and delivers high-quality visuals, enhancing the safety of the crew by providing clearer images and enabling faster detection of enemy activities.

Optronic mast

Photonics masts, also known as optronics masts, are advanced sensors used on submarines as an alternative to traditional periscopes. These innovative devices eliminate the need for a periscope tube, freeing up design space during construction and reducing the risk of water leakage in the event of damage.

Unlike periscopes, photonics masts do not have to be located directly above the user. They require only a small penetration in the pressure hull for cabling, allowing them to be fully integrated within the submarine's sail. This design flexibility also enables greater freedom in placing the control room, which no longer needs to be positioned directly below the sail.

Operating like telescoping antennas, photonics masts rise above the water surface to provide a wide range of sensory information. Equipped with an array of sensors, including high-definition low-light and thermographic cameras, they offer advanced imaging capabilities. The captured images and data can be displayed on panels within the submarine's control room for analysis and decision-making.

In addition to visual information, photonics masts can fulfill various other functions traditionally performed by optical-periscope masts. These include supporting navigation, electronic warfare, and communications systems.

Overall, photonics masts represent a significant technological advancement in submarine sensor systems. By employing digital equipment and innovative design, they offer improved performance, greater flexibility, and enhanced safety compared to conventional periscopes.