 Ideally one person should be delegated with this responsibility at any one time and all workers at the facility should be fully aware of who that person is and when the responsibility is transferred.A permit to work form typically contains these items.USS Guitarro, a submarine of the United States Navy, sank alongside when two independent work groups repeatedly flooded ballast tanks in an attempt to achieve conflicting objectives of zero trim and two degree bow-up trim; a result of failing to have a single person aware of and authorising all simultaneous activities by a permit to work system.