Rolls-Royce has provided long term support to the British Royal Navy and Royal Auxiliary Fleet for more than a hundred years. We offer our customers total engineering solutions and navies around the world have benefited from our commitment, engineering innovation and responsive service. Our underway replenishment equipment is in service with the navies of the UK, Canada, Greece, Australia, Iran, Venezuela, New Zealand, India, Indonesia, Portugal, Chile and Poland.

(A) Large derrick rigThis arrangement consists of a derrick which is stowed in the vertical position and deployed by topping out over the ship’s side using a topping winch. Two saddle (trough) winches position the refuelling hose which is suspended from the derrick. A third winch and line is used to recover the hose after the refuelling is completed.

ApplicationThe rig is used to refuel all types of vessel, including smaller units, as the lateral forces generated are considerably less than with a highline or jackstay rig. Used with NATO breakable spools or quick release coupling (QRCs).

(B) Latched back derrick rigA variant of the large derrick rig in which the derrick is secured in the upright position throughout. With the derrick in this position, a highline wire, controlled by an auto tensioning winch, is passed through rollers in the derrick structure to a strong point on the receiving ship. The ‘highline’ supports the refuelling hose which is carried on three saddles, controlled by three saddle winches, and run out along the highline.

Application

The rig is suitable for refuelling all sizes of vessels from small frigates upwards, in conjunction with the probe type of coupling. Although the derrick is permanently latched back for this type of operation, it can be converted to operate as a topped out derrick and used as described in A.

(C) Jackstay rigThis rig uses a jackstay wire to support the refuelling hose in a similar manner to that described in B, however a fixed post or portal is provided rather than a latched back derrick. The jackstay auto-tensioning winch is of much higher power, allowing operations in high sea states and adverse ship headings, and multi-hose refuelling.

ApplicationThis rig is usually fitted in larger tankers and is particularly suited to refuelling of medium to large size naval units. Both QRCs and probe couplings can be used with the rig, depending on the equipment aboard the receiving ship.

Underway Replenishment (UNREP)

Underway Replenishment (UNREP)

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Rolls-Royce Marine Power Engineering plcRAS/FAS & Naval Deck Machinery,Michell Factory, Sctotswood Road,Newcastle upon Tyne, NE15 6LLTel: +44 (0)191 256 2800 Fax: +44 (0)191 256 801www.rolls-royce.com

© 2004 Rolls-Royce plcWhilst this information is given in good faith, no warranty or representation is given concerning such information, which must not be taken as establishing any contractual or other commitment binding upon Rolls-Royce plc or any of its subsidiary companies.

Ref: MMS/FS/51/08/4

ApplicationThe rig is intended for one-stop support vessels that carry both liquid and solids, and can transfer to all but the smallest vessels.

(G) Heavy jackstay rigThis solids transfer rig comprises an auto-tensioning jackstay winch, an inhaul winch,an elevating trolley (padeye) drive, a travel-ling block and a fixed post. In operation, a load is attached to the travelling block at the stores ship’s deck level. It is raised to a suitable transfer height by elevating the trolley in the fixed post structure, hauled across by the receiving ship and returned under control of the inhaul winch. During these operations, the auto-tensioning jackstay winch maintains tension between the two vessels, continuously adjusting for relative ship motion. A variation of this rig uses a downhaul to lower and raise the load as an alternative to the elevating trolley.

ApplicationUsed for solids transfer to vessels of frigate size and upwards.

(H) Moveable highpointRolls-Royce has developed an easily installed moveable highpoint system for use aboard receiving vessels when they are being supplied with solids using the highline or jackstay methods. The system duplicates the function of the elevating trolley arrangement aboard the supply ship and enables the transferred load to be lowered to the vessel’s deck for dis-connection and stowage. An alternative method is to use a drop wheel arrangement as part of the travelling block in the heavy jackstay rig.

Total spares and through-life supportRenowned as underway replenishment and specialist deck machinery equipment designers and manufacturers for over 100 years, Rolls-Royce is internationally recognised for providing innovative solutions for a wide range of applications.Rolls-Royce has in place a team dedicated to providing effective and efficient through- life support, including highly skilled service engineers ready to fly the world to offer rapid response to customers’ maintenance needs and requests for technical assistance.

(D) Astern rigIn this rig, a buoyant fuel hose, stowed on a reel, is streamed astern of the supply vessel so that it is approximately 12m to port of the receiving ship. The last 30m of the hose is allowed to form a bight before being brought onboard the receiving ship and attached to its fuel connection.To enable the receiving ship to keep the correct distance astern of the supply vessel, a separate float is streamed by the latter vessel from a boom on the ship’s side aft and the receiving ship keeps station on this.

ApplicationThis is used for rough weather fuelling or when a number of ships must be refuelled simultaneously. Ship separation varies between 100 and 200m, depending on the severity of the weather.

(E) Crane rigIn this rig, a conventional shipboard crane is modified to include a refuelling rig arrangement. The hose is supported in two saddles, one rigged from the jib head and the other hung on a block and tackle positioned approximately at the jib mid-point. A separate recovery line is rigged to the receiving ship and this, together with the jib midpoint saddle line, are operated by independent winches, the crane hoist winch controlling the outer saddle line.

ApplicationThis rig is fitted to some tankers but is also carried aboard some large naval vessels such as aircraft carriers for transferring fuel to smaller units.

(F) Dual capacity high performance transfer rigThis rig enables refuelling and solids transfer to be carried out independently from a single station, utilising a jackstay system similar in principle to units C and G with improved controls and winch units. This enables the rig to operate in worse sea conditions than existing designs, undertaking one-stop operations with appropriate liquids/solids support vessels such as the UK’s AOR. For solids transfer, the elevating trolley drive incorporates a compensation system that prevents the load being pulled towards or away from the ship as it is lowered or raised. During the transfer and on the return, the load is under control of both an outhaul and an inhaul winch fitted on the supply ship. A variation on the system is to separate the rig into two single capacity rigs-for liquids or solids. Each incorporates the advances made during the development of the dual capacity rig.

Inhaul-outhaul wires

Jackstay/highline wire

Liquids hoses

FACTSHEET

D

Astern rig

Crane rig

E

Dual capacity transfer rig

F

Heavy jackstay rig

G

Movable highpoint rig

H

Large derrick rig

A

Latched back derrick rig

B

Jackstay rig

C