UNDERWAY REPLENISHMENT NWP 4-01.4 - Historic Naval Ships ...

NWP 4-01.4PREFERRED RIGACCEPTABLE RIGIAWRAMLOAD1850 PSIRAMW1850 PSIFor console with rams fullyextended and charged tomaximum rated HP air. Ifstations not equal, chargeram at highest rated only.Maximum control andreliability.IIIWWLOADWLimited payout and recoveryspeed for ship with bitterendedwhip.PREFERRED RIGACCEPTABLE RIGIBRAMWith ram extended andcharged, tightlining isalmost impossible.Maximum control andreliability.IVLimited payout and recoveryspeed for ship with bitterendedwhip.WWLOADWWLOADWWPREFERRED RIGUNDESIRABLEIIExcellent control andreliability for both ships.VNeither ship has a payout orrecovery rate for maintainingproper catenary and allowingfor rapid movement betweenthe two ships.WWLOADWWWLOADWUNDESIRABLEVIWLOADWNeither ship has a payout orrecovery rate for maintainingproper catenary and allowingfor rapid movement betweenthe two ships.Figure 7-6. Possible Combinations of Heavy Burtonrigged by the preferred method). Refer to Figure 7-6.Winches that control the whip must provide sufficientpayout and recovery speed to maintain the propercatenary during transfer and to allow for changes inthe distance between ships.7.6.2.1 Conditions for Heavy-Lift and Double-Whip Burtoning. Specific conditions that must bemet, when rigging for heavy-lift and double-whipburtoning, are listed below:1. Rigging on each station must meet the conditionsfor any method of burtoning listed in paragraph7.4.1.2. When rigging a double whip, the attachmentpoints used should be approximately 20 feet (6.0m) apart.3. Under no circumstances will both ends of a doublewhip be led from the same boom or other singleattachment point.4. Runner blocks rigged to the tie plate must benonswiveling. Swivels shall not be used betweenrunner blocks and the tie plate.5. Preventers rigged from booms should be locatedproperly, because they tend to produce the greatest7-10 ORIGINAL