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Seaman - Military manual for the Seaman rate
General Replishment Safety Precautions
When a carrier must break off for an emergency launch or recovery of aircraft When ships separate to the point where hoses appear in danger of parting; when separation distances cause wires to approach the last layer on the winch drums;, or when a casualty or equipment failure may result  in  a  tightline  condition When a rig parts and there is a possibility that the screw will become fouled When a person is lost overboard and a lifeguard ship or helicopter is not on station The  order  for  an  emergency  breakaway  may  be given by the commanding officer of either the receiving ship or the delivery ship. Once initiated, the delivery ship will assume control and initiate proper hand signals with   appropriate   parallel   information   on   the sound-powered phones to the receiving ship. Most important in the execution of an emergency breakaway is to allow sufficient time for the ships to disconnect the rigs in an orderly manner. Sound-powered  phones  and  hand  signals  should  be the primary means of communication for ordering an emergency breakaway, because of the minimal amount of  noise  generated.  However,  1MC,  bull  horns,  and voice  radio  circuits  should  be  used,  if  necessary,  to ensure rapid ship-to-ship communications. The danger signal (at least five short blasts) will be sounded   by   the   ship   initiating   the   emergency breakaway to alert all ships in the vicinity. In sounding five short blasts on the whistle to alert ships near emergency breakaway, due regard should be taken of (1)  the  tactical  situation,  (2)  the  effect  on  increased noise   levels   on   conning   officer-to-helmsman communication, and (3) the disruption to intership and intraship  sound-powered  phone  communications caused by whistle signals. Radio, or even visual means, may be preferred to whistle signals to notify ships in company.  Authorization  and/or  coordination  for  nonuse of whistle signals should be affirmed between ships involved  in  the  underway  replenishment  and  the  officer in tactical command (OTC) before commencement of the  underway  replenishment. The OTC and other ships in the formation should be informed  immediately  of  the  emergency  via  voice  radio if security permits. Amplifying details must be relayed as  soon  as  possible  thereafter.  When  a  condition warranting an emergency breakaway is recognized, the following  actions  should  be  taken: 1.  Notify  the  following  intraship  stations  of conditions  or  situations  that  require  execution  of  an emergency   breakaway: Bridge  (initiate  the  danger  signal  by  radio  or visual means, if prearranged, or by sounding five short blasts on the ship's whistle) Cargo  control  center Fuel  control  center Fueling stations Cargo stations 2.  Pass  the  word  between  ships  according  to prescribed procedures for the following: Bridge  to  bridge  for  all  ships  alongside Station to station Bridge to OTC and other ships in formation (security   permitting) 3. Stop all transfers. 4. Retrieve rigs in accordance with prescribed procedures. 5.  When  all  lines  have  been  released  by  the receiving ship, both ships maneuver as appropriate to get clear. VERTICAL   REPLENISHMENT (VERTREP) LEARNING  OBJECTIVE:  Define  vertical replenishment (VERTREP). Identify the time when  vertical  replenishment  is  used, Since  vertical  replenishment  (VERTREP)  is discussed extensively in Boatswain's Mate, Volume I, NAVEDTRA 10101, it will be discussed only briefly here. Vertical   replenishment   (VERTREP)   uses   a helicopter to transport cargo from the deck of an underway  replenishment  ship  to  the  deck  of  the receiving ship. VERTREP augments or, in some cases, replaces connected replenishment. It can be conducted with  the  receiving  ship  alongside  during  connected replenishment,  over  the  horizon  in  an  ASW  screen, firing gunfire support, or at anchor anywhere within range. Range depends upon the helicopter, flying conditions,  and  the  load. 4-35

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