Refer to the input text as context and select the correct relationship between 'Transocean' and 'Deepwater Horizon' from the available options.
Options: director/manager, owner of, original broadcaster, operator

BP also settled with Transocean Ltd (NYSE: RIG - news ) , which owned the Deepwater Horizon drilling rig, and Halliburton Co, which worked on the Macondo well.
owner of