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

NWP 4-01.4CHAPTER 2Common Procedures and Equipment2.1 BASIC PRINCIPLESThe close coordination required to effect transfers ofmaterial and personnel between ships underway can beachieved only by a clear understanding of the responsibilitiesof each ship. In the following description ofthese responsibilities, two sets of basic terms are used.The responsibilities relating to shiphandling are describedin terms of the control ship and the approachship: the control ship maintains the replenishmentcourse and speed and is the unit guide; the approachship keeps station alongside. The responsibilities relatingto the rigs that are passed between the ships are setforth in terms of the delivery ship and the receivingship: the delivery ship furnishes and handles the rigs;the receiving ship receives the rigs. These terms are independent;either the approach ship or the control shipmay be the delivery ship, the other being the receivingship. Normally the control ship is the delivery ship. Exceptionsto this convention are indicated herein; any additionalexceptions must be established by the OTC,prior to the UNREP.2.1.1 Control Ship. The control ship is the unitguide for the UNREP. The control ship is responsiblefor these duties:1. Maintaining steady course and speed.2. Controlling — in close coordination with theapproach ship(s) — changes in course andspeed, necessitated by:a. Station keeping on the formation guide; or, ifthe guide, responding to changes signaled bythe OTC. Formation course changes are executedin steps of not more than 5° (10° inemergencies), with time between steps tosteady up.b. Avoiding navigational hazards or collision.c. Other situations, wherein the hazards of achange in course or speed are outweighed bythe advantages.3. During course changes:a. Using rudder to produce a 3,000-yard tacticaldiameter turn.b. Advising the approach ship(s) as follows: (1)when the rudder is put over for a coursechange, (2) as each degree of heading ispassed during the turn, and (3) when the rudderis shifted to steady up.c. Altering the planned course change to steadyon an intermediate course, and advising theapproach ship(s) if it appears that a hazardoussituation is developing during the turn.4. During speed changes, which are not to be madesimultaneously with course changes:a. Changing speed in increments not exceeding1 knot — in coordination with the approachship(s).b. Steadying on an intermediate speed, and advisingthe approach ship(s) if it appears that ahazardous situation is developing during thespeed change.5. Making the required readiness (ROMEO) signalsfor approach and transfer in accordancewith the signal flag hoists illustrated in Figures2-2 and 2-15 or by flashing light at night. (Seeparagraph 2.2.3.)6. Displaying the appropriate international signalshapes (or task lights at night) from the time theapproach ship commences the approach until thetime the approach ship is clear. (See paragraph2.4.6.)2.1.2 Approach Ship. The approach ship makesthe approach and keeps station on the control ship. Theapproach ship is responsible for these duties:2-1 ORIGINAL