This article is a list of commands of the United States Navy. The list is organized along administrative chains of command (CoC), and does not include the CNO's office or shore establishments. Deployable/operational U.S. Navy units typically have two chains of command – the operational chain and the administrative chain. Once the CSG deploys and crosses over the inter-UCC boundary in the mid-Atlantic, it then reports (is "chopped") to the Sixth Fleet (responsible for European waters and the Mediterranean Sea).