From the WSJ:
But German prosecutors now allege that Nord Stream was destroyed by Ukrainian civilian divers, who sailed on a small yacht called Andromeda and dove with bombs during a storm.
The sabotage team was just seven people, including a skipper, an explosives expert and four deep-sea divers, according to the findings of German investigators and people who participated in the planning of the attack. The crew obtained forged European IDs and posed as a group of scuba diving enthusiasts on a yachting trip.
A yacht called Andromeda was rented from a company in Rostock, on Germany’s Baltic shore, according to German investigators. It set sail from the German island of Rügen, headed for the middle of the Baltic.
The divers reached their target on the morning of September 11. As the skipper stopped the vessel, the roar of the diesel engine turned into a murmur, according to the Ukrainian military officers, who were in touch with the crew while they were at sea. The group could hear the hissing of the wind
and the creaking of the ropes running down from the mast.
Back on the boat, several divers were seasick.
Rain blurred the horizon into a wall of gray. The skipper wondered whether conditions were too dangerous. Only the female diver was undeterred—once they reached the bottom, it would be easy, a fun ride like always, she said. It was then that she asked the group to let her dive alone.
The men were shamed into action by her boldness, according to those who planned the attack. In the end, they planted eight bombs by Sept. 23.
The blasts came three days later. The event was registered by seismic devices nearly a thousand miles away, as far as Sweden’s polar region, according to the Swedish seismologist Björn Lund.