The capabilities to lower several hundred of kilograms of explosives on several points in the deep and muddy waters of the Baltic is not something you can do with some training and a backpack full of kit.

You need a specialized boat to do so, if possible with a submarine. Like the SS-750 which was there a few days before the explosion.

https://en.wikipedia.org/wiki/2022_Nord_Stream_pipeline_sabo...

Ukraine will send drone to attack compressor station on shore, like we do now with oil refineries. Why we need to play in a muddy waters at all? We are at war with RF.