Giant TBM starts digging tube-train sized tunnel beneath the Thames

"A 270+ tonne tunnel boring machine (TBM) was launched to excavate the new tunnel, which will eventually replace the existing Thames Cable Tunnel that has carried power beneath the river since 1969. The machine has been named, as all are, after a local lady - in this case, Caroline."

"The name was chosen following a competition involving local schools and honours Caroline Haslett, the pioneering electrical engineer and campaigner for women in engineering. Haslett was a founder of the Women's Engineering Society and helped promote engineering careers for women during the 20th century."

"So far, 76 people from the surrounding area are working on the project, along with 15 local businesses contributing to the construction and supply chain. Training opportunities are also being created as part of the scheme, including plans to support 22 apprenticeships, graduate roles and short work-experience placements for students interested in careers in the energy sector."

A tunnel boring machine named Caroline has commenced excavation of a new 2.2-kilometre tunnel beneath the River Thames between Kent and Essex. The tunnel will carry electricity cables, replacing the existing Thames Cable Tunnel operational since 1969. The project, delivered by National Grid with Ferrovial BEMO and Herrenknecht, employs 76 local workers and involves 15 local businesses. The machine was named after Caroline Haslett, a pioneering electrical engineer and Women's Engineering Society founder. The project creates training opportunities including 22 apprenticeships and graduate roles. Concrete tunnel lining rings are manufactured locally by Pacadar. Excavated material will be beneficially reused at future developments. Completion is targeted for 2029.

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