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Objectives• Identify various types of ships that are used to
supply fuel and cargo• Identify various types of equipment used during
UNREP• Describe procedures for conducting a safe UNREP• Name various types of replenishment rigs used
during fueling and cargo transfer• Recognize the different types of standard
tensioned replenishment alongside method (STREAM) rigs used
• Identify procedures for conducting a safe VERTREP
• Describe the type of equipment used in VERTREPFrom NROTC, 12-22-2007
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Introduction• The primary aim of an UNREP is the
safe delivery of the maximum amount of cargo and fuel in the minimum amount of time
• The operation must be conducted without interfering with the mission of the force
• Using UNREP procedures, a force can remain at sea and on station indefinitely
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Types of Underway Replenishment
• Connected Replenishment (CONREP)a method of transferring fuel, ammunition, and stores from one ship to another through lines and hoses connecting the two ships.
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Types of Underway Replenishment
• Vertical Replenishment (VERTREP)a method of transferring ammunition
and stores from one ship to another by helicopter
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Replenishment Ships
Single purpose vs. Multi-purpose
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Navy vs. Military Sealift Command Replenishment
Ships
• MSC Ships• Former naval auxiliaries now manned with
civilian or civilian/military crews• Identified with a “T” in front of their type
classification and are USNS vice USS
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• Visually identify by blue and gold stripes painted on their stacks for easy recognition
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Oilers (AO)
• Cimarron Class (AO-177)• Henry J Kaiser Class (TAO-187)
• Services• Complete range of petroleum products• Limited Cargo, Food, Stores• Mail
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HENRY J. KAISER Class (T-AO 187)
• 13 underway replenishment oilers operated by Military Sealift Command
• provide underway replenishment of fuel to U.S. Navy ships at sea and jet fuel for aircraft assigned to ships• UNREP stations on both sides of ship
• 2 diesels, 2 shafts, 20 kts• ship’s company = 82 civ/1 O/20 E• Helo platform only
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Combat Stores Ships (AFS)
• Mars Class (TAFS-1)• Sirius Class (TAFS-8)
• Services• Food (Refrigerated and Frozen)• Stores, Cargo• Mail
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Fast Combat Support Ships (AOE)
• Sacramento Class (AOE-1)• Supply Class (AOE-6)• Services
• Fuel • Ammunition• Food, Stores, Cargo, Mail• 2 CH-46s for VERTREP capability
*Largest, fastest, and most powerful auxiliary *Largest, fastest, and most powerful auxiliary shipship
*Deploy with CVBGs*Deploy with CVBGs
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SACRAMENTO Class (AOE-1) • High-speed oiler, ammunition and supply
ship• 4 total (AOE 1-4)
• U.S. Navy’s largest combat logistics ship• speed and armament to keep up with CVBG
• carries 177,000 barels of oil, 2,150 tons of ammunition, 500 tons of dry stores, and 250 tons of refrigerated stores
• reduces vulnerability of serviced ships by reducing alongside time
• 4 gas turbines, 2 shafts, 26 kts• ship’s company = 24 O/576 E• 2 CH-46 helicopters• NATO sea sparrow, two CIWS,
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SUPPLY Class (AOE-6) • 4 total ships (AOE 6-10)• 4 gas turbines, 2 shafts, 25 kts• ship’s company = 40 O/627 E• 3 CH-46 helicopters• NATO sea sparrow, two CIWS, two
25mm
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Ammunition Ships (AE)
• Kilauea Class (TAE-26)
• Services• Ammunition, bombs, missiles• Limited dry cargo• Helicopters for VERTREP ops
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Other UNREP Ships
• Aircraft Carriers • top off escort ships
• Amphibious Assault Ships• Tarawa Class (LHA-1)• Wasp Class (LHD-1)
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Replenishment Planning1 week - 4 days prior
submit logistics request (RASREQ)
• requested UNREP date• rendezvous point• fuel requisition• stores requisition
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Replenishment Planning1 week - 4 days prior
RASREQ reply
• name of delivery ship• rendezvous location and time
(considerations?)• breakdown of supplies to be transferred• expected replenishment course / speed
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Day Prior to Replenishment
• Conduct UNREP brief• ship/station sequence• cargo sequence / flow• masthead height of UNREP ship• replenishment course / speed• factors that could affect UNREP - sea state,
wind direction, operational considerations• emergency procedures• safety briefing
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Day of Replenishment
• Rendezvous with UNREP ship• Set UNREP detail• Safety brief onstation• Take station on UNREP ship (as
directed)
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Personnel Requirements at UNREP stations
• 1 Safety Officer (white helmet)• 1 Rig Captain (yellow helmet)• 1 Signalman (green helmet)• 2 Phone talkers (green helmets)• 1 Gunners Mate (red helmet and vest)• 15 line handlers (blue helmets)• 4 riggers (blue helmets,goggles, face
shields)• 1 Corpsman (white helmet w/red cross)
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Ready, aim, DUCK!
MK87 Mod1 Line Throwing Rifle - propels a buoyant rubber projectile attached to a spool of international orange shotline
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Safety Officer• Qualify PQS Safety Officer, Underway
Replenishment• Primary responsibility = prevent
unsafe activities on station• conduct safety brief to all personnel• ensure all personnel are in
Kapoks/MK5s and proper battle dress with all watches and jewelry removed
• Be familiar for procedures with receiving rig
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General Safety • Life buoy watches stationed• Chemlights worn by all personnel
at night• line handlers use “hand-over-
hand” method• smoking lamp is OUT throughout
the ship while transferring fuel/ammo
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UNREP Principles and Procedures
• Receiving Ship• Normally the approach ship• Maintains station on the delivery ship• receives fuel, ammunition, or stores
from the supply ship
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Replenishment Station
090° or 270°Ralongside UNREP ship
Replenishment Stations
UNREP Ship
Lifeguard Station180°R 1,000yds
Waiting Station
500 yds astern
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Waiting Station
UNREP Ship
Waiting StationStarboard
300-500 yds astern
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While In Waiting Station
• Examine the wake of UNREP ship• Your wake should be parallel / keep
about 50yd separation between wakes
• Adjust speed to match UNREP ship
• Determine lateral separation using Radian Rule
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Lateral Separation Requirements while
Alongside• 100-120 ft (35-40yds) for most
combatants
• 150ft (50yds) for carriers / less maneuverable ships / inclement weather
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UNREP Approach for standard 120 lateral
separationUNREP Ship
Waiting StationStarboard
500 yds astern
*Bearing offset from base course to tangent of side of replenishment ship at a given distance
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120 Degress Lateral Separation Table
Range to UNREP ship (yards) Degrees difference
600 4
500 5
400 6
300 8
200 12
*If you are 600 yards away on unrep course of 150 degrees true, delivery ship bears 146 degrees true from you.
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Radian Rule
500 yds R
D 50 yds
50 = ( )
50060
= 6 degrees toport or 354°R
D = ( ) R60
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UNREP Principles and Procedures
Romeo Corpen / Speed:• Naval terminology for replenishment course and speed
*speed normally 13-15 knots-never < 8 knots = reduce rudder effect-never > 15 knots = Venturi effect
• Considerations for selection include sea conditions, wind direction and velocity
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Waiting station• 300-500 yards astern• Compare gyros/engine rpm• Use ROMEO flag signals accordingly
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ApproachAdjust course and speed to take station 120 feet off to the side of the Control Ship.
120 feet
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Alongside•Find a "range" on the other vessel in order to gauge relative position fore/aft.
•Use Distance line to determine range between vessels.
•Order small course and speed changes to maintain relative position.
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Breakaway•Increase speed.•Order small course changes away until well clear.•Never cross the bow of the Control Ship.
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USE OFFLAG
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USE OFFLAG
Approach ship takes station in waiting station 300-500 yards astern of control ship and waits for further instruction from control ship
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Use of the flag ROMEO (Control Ship)
ROMEO is placed at the dip on side with the rig.
Meaning: I am steady on ROMEO course & speed and preparing to receive you alongside.
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Signals While inWaiting Station
Control Ship Approach Ship
1. Steady on R Corp/Speed
2. Making preps to receive on starboard side
In waiting station
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Use of the flag ROMEO (Approach Ship)
ROMEO is placed at the dip on side where rig is expected.
Meaning: I am ready to come alongside.
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Signals While inWaiting Station
Control Ship Approach Ship
Ready to come alongside
as indicated by side of Romeo
Flag
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Use of the flag ROMEO (Control Ship)
ROMEO is closed up.
Meaning: I am ready to receive you alongside.
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In Waiting StationControl Ship Approach Ship
Ready for yourapproach
In waiting station
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Use of the flag ROMEO (Approach Ship)
ROMEO is closed up.
Meaning: I am commencing my approach.
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Commencing ApproachControl Ship Approach Ship
Commencingmy approach
*Increase speed by 3-10 knots over signaled UNREP
speed
Ready for yourapproach
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Coming Alongside• Slow to Romeo speed as necessary• Switch to RPM engine orders• Line up the rigs• Line-throwing guns on Delivery ship
send over messengers from each station to opposite stations on receiving ship• Exception = danger of a/c on deck,
receiving ship fires shotlines at delivery ship
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Coming Alongside• Word passed over the 1MC:
• Shot-delivering ship = “On the (receiving ship’s name), stand by for shot lines. All hands topside take cover.” • One whistle signal from each station on
delivery ship
• Shot-receiving ship = “On the (ship’s name), stand by for shot lines at (stations concerned). All hands topside take cover.• Two whistle signals from each station on
receiving ship• Three whistle signals - delivery ship firing shot
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Use of the flag ROMEO (Control Ship & Approach ship)
ROMEO is hauled down when the first messenger line is across.
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While Alongside
• Maintain relative position• 1-2 rpm speed changes• ½° course changes
• Maintain lateral separation using phone-distance line
• Be aware of spanwire tension/detension
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Phone/Distance Line- Assists the conning officer in monitoring the distance between ships.-350ft long with rectangular colored clothmarkings (flags) for 300 feet in the followingorder:
Green = 0’ Red = 20’ Yellow = 40’ Blue = 60’ White = 80’ Green = 100’
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Phone/Distance LineDistance Line Provided by Receiving ship
•Hooked up on Delivery ship at the 0' end•Tended by Receiving ship
An intertwined sound-powered phone line allows communication between ships.
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Phone and Distance Line
0 20 40 60 80 100 120 140
G R Y B W G
ControlShip
ApproachShip
Night
Day
Double Blue Chemlights at60, 100, 140, 180 yds