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Vertical Replenishment (VERTREP)
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Cargo can be carried internally, but the preferred method is to sling it externally since this method is faster and provides more flexibility. Internal cargo is restricted to cargo that can be handled by an internal winch with a capacity of 600 pounds. Depending on the helicopter and flying conditions, up to 7,000 pounds can be  carried  externally. The  majority  of  VERTREP  cargo-handling  items are  identical  to,  or  are  adaptations  of,  ordinary cargo-handling  equipment.  For  example,  the  forklift and pallet trucks, wooden and metal pallets, and nylon cargo nets used for VERTREP are the same as those used in ordinary cargo-handling operations. Other items that may not be so familiar are cargotainers, cargo wraparounds,  special  hoisting  slings,  and  various missile  containers  and  dollies. The same procedures used during the day are used during  nighttime  VERTREPs,  except  that  increased caution  and  precision  are  required.  The  primary difference between a day and night VERTREP is a reduction in the speed of operations, due to decreased visibility. Ships must be certified and authorized to take part in night VERTREP, and only those with proper lighting  will  be  certified. GENERAL REPLENISHMENT SAFETY PRECAUTIONS LEARNING OBJECTIVE: Describe the safety precautions to be observed during underway replenishment (UNREP). Persons  assigned  to  replenishment  stations  must  be thoroughly schooled in safety precautions and should be so well trained that they observe them almost automatically. Unfortunately, people tend to be careless, particularly when doing familiar tasks. A primary consideration  in  every  shipboard  evolution  is  the  safety precautions  required,  depending  upon  the  equipment used. Additionally, safety precautions must be reviewed immediately before each replenishment and must be observed.  Following  is  a  list  of  general  safety precautions  according  to  NWP  14. Only essential personnel should be allowed at a transfer  station  during  replenishment. Lifelines should not be lowered unless absolutely necessary. If lowered, temporary lifelines must be rigged. Temporary lifelines should be a minimum of 2 inches (50.8 mm) in circumference. When the shot line is passed with a line-throwing gun the procedures set forth in NWP 14 are to be followed. Personnel assigned to each transfer station, including line and cargo handlers, should remove rings, watches, and other jewelry that could inadvertently be caught in the rigs, blocks, lines, or cargo. Personnel must be instructed to keep clear of bights, to handle lines from the inboard side, and to keep at least 6 feet (1.8 m) from the blocks through which the lines pass. If practical, personnel should be forward of the span wire or highline. Line-throwing  gunners  should  wear  red  jerseys or red vests, and Signalmen should wear green jerseys or green vests. Jerseys should be worn under life jackets and vests should be worn over life jackets if personnel are in the water. Personnel should be cautioned to keep clear of a suspended load and to stay clear of the rig's attachment points until the load has been landed on deck. Personnel must remain alert and never turn their backs to any load. Be careful to prevent the shifting of cargo that might  endanger  personnel  or  material. Span wires, whips, and wire highlines should be secured to winch drums by one wire rope clip, or specially designed clamp, to lessen the possibility of damage  should  an  emergency  breakaway  be  necessary. Deck  spaces  near  transfer  stations  must  be covered  with  nonskid  to  provide  secure  footing. Both  the  delivering  and  receiving  ships  must station a lifebuoy watch well aft on each engaged side. The watch must have S/P phone communications with the bridge and must be equipped with two smoke floats and a 24-inch (60.9-cm) ring buoy fitted with a float light. All hands must be instructed on the hazards of emergency   breakaway. Phone talkers on intership phone lines must not fasten  their  neck  straps. Cargo handlers should not step on or in a cargo net attached to a cargo hook. Personnel involved in VERTREP must wear protective clothing and safety devices as indicated in NWP 14 and NWP 42. 4-36

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