Roto-Reuters has some info:
Robo-Sub did it IMHO
"Each line of the pipeline consists of about 100,000 24-tonne concrete-weight coated steel pipes laid on the seabed. The pipelines have a constant internal diameter of 1.153 metres, according to Nord Stream.
Sections lie at a depth of around 80-110 metres"
https://www.reuters.com/world/europe/qa-what-is-known-so-far-about-nord-stream-gas-pipeline-leaks-2022-09-27/
Roto-Reuters has some info:
Robo-Sub did it IMHO
"Each line of the pipeline consists of about 100,000 24-tonne concrete-weight coated steel pipes laid on the seabed. The pipelines have a constant internal diameter of 1.153 metres, according to Nord Stream.
Sections lie at a depth of around 80-110 metres"
https://www.reuters.com/world/europe/qa-what-is-known-so-far-about-nord-stream-gas-pipeline-leaks-2022-09-27/