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Joint Warrior Gps Jamming


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#1 wbeedie

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Posted 01 April 2012 - 09:48 PM

http://www.mnwfa.co....ies-U-SOSM-.pdf

THIS GIVES ALL VALID INFO ON THE UP AND COMING JW EXERCISE
Some people accuse me of thinking the world revolves around me, but it doesn't. It revolves around the Sun which shines out of my arse.

#2 wbeedie

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Posted 01 April 2012 - 10:05 PM

Click on the link above for the chart areas (Diagrams)


JOINT WARRIOR 121 - SUBMARINE, MINEWARFARE AND LIVE FIRING ACTIVITY
1. Joint Warrior (JW) 121, will take place from 15 until 26 April 2012 and will comprise
of a programme of exercises conducted by land forces, warships, submarines and aircraft
across the UK with the maritime element focussed in the offshore and coastal waters to
the north east, north and north west of Scotland. This booklet provides outline information
on their scheduled operations as well as details of intended gunnery and aircraft bombing
activity at Cape Wrath and in some open ocean areas.
2. The information is correct at the time of going to print but the routine SUBFACTS
and GUNFACTS broadcasts, made during the exercise, will provide updated information.
3. The information provided in this booklet will also be published in Fleet Ops Notice to
Fishermen, Defence Training Estate Scotland Notice to Fishermen and Cape Wrath
Range Notices. This document is also on the internet at http://www.qhm.mod.uk/clyde
4. This booklet contains the following sections:
a. Submarine Activity.
b. Warship Activity.
c. Minewarfare Activity.
d. Live Firing and Gunnery Activity.
e. Denial of GPS Services.
f. Unexploded Ordnance Advice.
5. The warships taking part have been instructed to offer fishing vessels every
assistance in their dealings with exercise activity, especially when in the vicinity of
submarines or participants conducting live firing. You are invited to contact them as
required to ensure that our two activities do not come into conflict.
6. Throughout JW 121 the following points of contact are available to attend to any
immediate problems or questions:
Primary - Joint Warrior Duty Controller 01436 674321 ext. 6469
Secondary - Duty Submarine Controller 01923 956366
HM Coastguard at Clyde, Stornoway and Aberdeen can also contact my staff directly and
will relay information if necessary.
7. If you have any queries, problems, or suggestions as to how JTEPS can improve
this booklet, please do not hesitate to contact my Staff Officer Submarines at the above
address.
P J Titterton OBE
Captain Royal Navy
Director JTEPS
Submarine Activity
1. The Submarine Activity Grid on the following page shows the areas and time
periods where submarine activity associated with Joint Warrior is forecast. Please note
that other submarines that are not part of the exercise may transit the areas north west of
Scotland; their activity is not covered in this brief. The daily SUBFACTS broadcast by the
Coastguard will provide notification of the actual areas where all submarine activity is
taking place. During Joint Warrior, in order to keep the SUBFACTS broadcast short, a
number Scottish Exercise Areas are grouped together. The groupings are shown in the
chartlet and table in this section.
2. Communications can be established with submarines during JW, when they are
surfaced or at periscope depth, on VHF Ch 16 (working Ch 73). In the event that they are
operating with warships, one of the warships will have been detailed to act as the Fishing
Vessel Safety Ship (FVSS) in accordance with the Code of Practice. The FVSS has two
overarching duties:
a. To make fishing vessels aware of submarine activity in their vicinity and to
provide information and advice to minimise the risk of interaction.
b. To provide assistance to the participating submarine in compiling a
comprehensive surface picture in order to minimise the risk of interaction with nonexercise
vessels.
3. It is usually easier to establish communications with the FVSS than with a
submarine. However, any warship in the vicinity may be contacted and asked for a report
on any exercises involving submarines which are being conducted in the local area.
Alternatively, the ship may be used to relay messages or instructions to the submarine if
required.
Submarine Activity
Exercise Joint Warrior 121
SUBFACTS AREAS ACTIVATION GRID
15 APR 16 APR 17 APR 18 APR 19 APR 20 APR 21 APR 22 APR 23 APR 24 APR 25 APR 26 APR
SUN MON TUE WED THR FRI SAT SUN MON TUE WED THR
Active Time
Period BST
0001 - 0800
0800 - 1600
1600 - 2359
0001 - 0800
0800 - 1600
1600 - 2359
0001 - 0800
0800 - 1600
1600 - 2359
0001 - 0800
0800 - 1600
1600 - 2359
0001 - 0800
0800 - 1600
1600 - 2359
0001 - 0800
0800 - 1600
1600 - 2359
0001 - 0800
0800 - 1600
1600 - 2359
0001 - 0800
0800 - 1600
1600 - 2359
0001 - 0800
0800 - 1600
1600 - 2359
0001 - 0800
0800 - 1600
1600 - 2359
0001 - 0800
0800 - 1600
1600 - 2359
0001 - 0800
0800 - 1600
1600 - 2359
ORSAY A A A A A A A A A A A A A
N.CHANNEL A A A A A A A A A A A
HEBRIDES A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
MINCH A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
UIST A A A A A A A A A A A A A A A A A A A A A
LEWIS A A A A A A A A A A A A A A A
PENTLAND A A A A A A A A A A A A A A A A A A A A A A A A
SKERRY A A A A A A A A A A A A A
DEEP 1 A A A A A A A A A A A
DEEP 2 A A A A A A A A A A A A A
DEEP 3 A A A
SHETLAND
MORAY A A A A
FORTH
TYNE
The planned activity in the JW SUBFACTS AREAS is indicated by the letter A in the grid above. There may be changes to this planned activity. Daily SUBFACTS
Broadcasts will contain the most up to date information regarding the activation of the areas. 0700z-1500z
Submarine Activity
Deep 2
Deep 1
Deep 3
Skerry
Moray
Forth
Tyne
Pentland
Lewis
Uist
Minch
Hebrides
N Channel Clyde
Shetland
55 N
59 N
60 N
58 N
56 N
57 N
61 N
12 W 10 W 08 W 06 W 04 W 02 W
Orsay
JW SUBFACTS
Area Groupings
Submarine Activity
SCOTTISH EXERCISE AREAS – JW SUBFACTS GROUPING
CLYDE
BALLANTRAE AYR TARBERT
AILSA BRODICK MINARD
STAFNISH IRVINE FYNE
PLADDA LAGGAN WEST KYLE
TURNBERRY GARROCH EAST KYLE
DAVAAR LOCHRANZA CUMBRAE
LAMLASH SKIPNESS STRIVEN
GOIL ROSNEATH GARELOCH
COVE
ORSAY
STAFFA EIGG COLONSAY
MULL JURA SOUND LINNHE
BLACKSTONE PLACE BOYLE
MACKENZIE ORSAY
NORTH CHANNEL
ISLAY OTTER GIGHA
EARADALE KINTYRE SKERRIES
RATHLIN MAIDEN CORSEWALL
MAGEE BEAUFORT ARDGLASS
PEEL MERMAID SANDA
TORR
HEBRIDES
USHENISH NEIST BRACADALE
CANNA RHUM SLEAT
HEBRIDES NORTH HEBRIDES CENTRAL HEBRIDES SOUTH
TIREE HAWES EIGG
BARRA FORD
MINCH
RONA NORTH RONA SOUTH RONA WEST
RAASAY TIUMPAN STOER
SHIANT EWE MINCH NORTH
MINCH SOUTH PORTREE TRODDAY
LOCHMADDY DUNVEGAN CROWLIN
Warship Activity
VHF Challenges
1. In light of ever changing threats to our Armed Forces, military ships maintain a
detailed plot of maritime activity in their vicinity, which includes establishing the identity of
small fishing vessels. This can be achieved visually from helicopters or by challenges on
IMM VHF radio by ships. Mariners are advised that warships from various Allied Nations
will be conducting such reconnaissance and challenges. Areas likely to be affected are
the Clyde, North Channel, South of the Sea of Hebrides, the Sea of Hebrides, the Little
Minch, North Minch, the area near Cape Wrath, Loch Eriboll and the Outer Hebrides.
Mariner’s co-operation during this time would be much appreciated. A small number of
contracted civilian vessels including high speed craft will be operating in the vicinity of the
Minches in support of this training task. Every effort will be made to avoid interference to
fishing vessels.
Small Boat Activity
2. There will be a period (16 Apr), within the Clydeport area south of Toward Point,
where small boats (both contracted civilian and military) will operate with Warships and
helicopters. This activity will remain clear of the main shipping and ferry routes. Small
boats taking part in this will indicate their participation by showing a green flag.
Minewarfare Activity
1. Mine Counter Measures (MCM) vessels will conduct minehunting exercises using
sonar and towed sweeps to look for potential mines both on the seabed and moored to the
seabed that are subsequently investigated by remote controlled submersible vehicles and
divers.
2. Towed sweeps for minesweeping will not be used during JW 121.
3. All participating MCM vessels will be thoroughly briefed on local fishing operations
in advance of the exercise and are instructed to make early liaison calls to fishing vessels
on VHF. Skippers of fishing vessels operating in the vicinity of these ships are
encouraged to talk to them and discuss intentions.
4. If any difficulty is experienced a call should be made to the Duty Submarine
Controller at CTF 311 OPS ROOM on the “Fishermen’s Hotline” number, 01923 956366.
This line is permanently manned.
5. The following MCM vessels will participate in Ex JW 121:
6. Inert mines have been laid for the exercise, in the following areas:
a. LOCH EWE (see chartlet 1)
All areas within Loch Ewe between latitudes 57 52.28N and 57 49.20N
b. MINCHES (see chartlet 2)
Along the following line:
A. 57 32.98N 006 52.06W
B. 57 41.98N 006 35.06W
C. 57 50.18N 006 16.06W
c. CARN SKERRIES/HORSE ISLAND (see chartlet 1)
A. 57 57.94N 005 20.08W
B. 57 57.55N 005 20.57W
C. 57 58.44N 005 23.08W
D. 57 58.84N 005 22.58 W
Name Nationality Pennant No
HMS BANGOR British M109
HMS BLYTH British M111
HMS GRIMSBY British M108
HMS SHOREHAM British M112
HMS ATHERSTONE British M38
HMS BROCKLESBY British M33
HNOMS KARMOEY Norwegian M341
HNOMS HINNOEY Norwegian M343
FGS SIEGBURG German M1098
FGS BAD BEVENSEN German M1063
Minewarfare Activity
d. EILEAN DUBH (see chartlet 1)
A. 57 59.23N 005 25.60W
B. 57 58.85N 005 25.50W
C. 57 58.75N 005 26.84W
D. 57 59.60N 005 26.90W
e. PRIEST ISLAND (SOUTH) (see chartlet 1)
A. 57 56.91N 005 31.48W
B. 57 56.50N 005 31.82W
C. 57 56.83N 005 33.32W
D. 57 57.27N 005 33.00W
f. GRUINARD BAY APPROACH (see chartlet 1)
A. 57 56.24N 005 28.57W
B. 57 55.80N 005 28.91W
C. 57 56.25N 005 30.70W
D. 57 56.68N 005 30.46W
g. GRUINARD BAY (see chartlet 1)
A. 57 54.00N 005 29.61W
B. 57 52.80N 005 29.61W
C. 57 52.80N 005 30.80W
D. 57 53.02N 005 30.80W
E. 67 53.02N 005 30.00W
F. 57 54.00N 005 30.00W
h. BROAD BAY (see chartlet 3)
A. 58 16.60N 006 14.60W
B. 58 16.60N 006 12.20W
C. 58 15.40N 006 12.20W
D. 58 15.40N 006 12.20W
i. LOCH ERIBOLL APPROACH (see chartlet 4)
A. 58 42.97N 004 42.00W
B. 58 34.00N 004 36.72W
C. 58 31.96N 004 38.16W
D. 58 29.70N 004 41.30W
j. LOCH ERIBOLL ANCHORAGE (NORTH) (see chartlet 4)
A. 58 33.30N 004 38.00W
B. 58 33.30N 004 36.40W
C. 58 32.00N 004 36.40W
D. 58 32.00N 004 38.00W
Minewarfare Activity
7. The planned minelay and recovery programme:
a. Minelay. Will occur 26-28 March for JW 121.
b. Mine recovery. Mines will be recovered throughout JW 121.
8. Minehunters will conduct live firings of mine disposal charges in the following area:
a. MINE DISPOSAL CHARGE FIRING AREA (see chartlet 1)
A. 57 57.58N 005 33.93W
B. 57 57.85N 005 33.93W
C. 57 58.25N 005 31.97W
D. 57 57.02N 005 31.97W
b. DIVER PLACED CHARGES FIRING AREA in Loch EWE will take place
within a circle, with a radius of 200m, centred on 57 48.200N – 005 38.900W.
9. No Minesweeping will take place during JW 121. The previously used
minesweeping corridor defined below is no longer in use.
LOCH EWE APPROACH (see chartlet 1/2)
1000 yds either side of a line: A. 58 00.00N 005 46.00W
B. 57 55.00N 005 43.80W
10. Liaison between the MoD and appropriate fishermen’s associations/organisations,
in some cases with individual owners/skippers, HM Coastguard and Marine Scotland have
been made to use the above areas. Should anyone consider that their
organisation/association should be included in this process in future please contact
Lieutenant Commander Matt Offord (FOSNNI SMCDO) on 01436 674321 extn 6510.
11. All participating MCM vessels will be thoroughly briefed on local fishing operations
in advance of the exercise and are instructed to make early liaison calls to fishing vessels
on VHF. Skippers of fishing vessels operating in the vicinity of these ships are
encouraged to talk to them and discuss intentions.
Minewarfare Activity
Chartlet 1
Not in use
6a
6c
6d
6e 6f
8a
6g
8b
Minewarfare Activity
Chartlet 2
6b
Minewarfare Activity
Chartlet 3
6h
Minewarfare Activity
Chartlet 4
6i
6j
Live Firing and Gunnery
1. During Joint Warrior, Cape Wrath Range, including Garvie Island (An Garbh-eilean)
will be active with various combinations of air bombardment, naval gunfire support and
helicopter operations. In addition a Joint Warrior Firing and Danger Area will be activated
for offshore gunnery. The Gunfacts and JW Offshore Firing Areas Activation Grid on the
following page shows the areas and time periods where gunnery associated with Joint
Warrior is forecast to take place. The daily GUNFACTS Broadcast by the Coastguard
and Cape Wrath Range will provide notification of the actual areas where all the gunnery
activity is taking place.
2. Joint Warrior Firing and Danger Area coordinates are in the accompanying chartlet.
3. It is mandatory that vessels in the vicinity of the Cape Wrath Range keep a listening
watch on VHF Channel 16. Further information regarding firing at can be obtained by
telephoning:
Cape Wrath Information Line on
FREEPHONE 0800 833300.
or 01862 892185
The number will provide specific information about active/non-active periods and when the
Range road (U70) will be open/closed for public access.
Live Firing and Gunnery
Exercise Joint Warrior 121
GUNFACTS AND JW OFFSHORE FIRING AREAS ACTIVATION GRID
16 APR 17 APR 18 APR 19 APR 20 APR 21 APR 22 APR 23 APR 24 APR 25 APR 26 APR
MON TUE WED THR FRI SAT SUN MON TUE WED THR
Cape Wrath
Range (Ashore) 0100-2359 0100-2359 0100-2359 0100-2359 0100-2359 0100-2359 0100-2359 0100-2359 0100-2359 0100-2359 0100-2359
Cape Wrath
D801 0800-1200
Cape Wrath
D802 0900-2030 0900-2359 0900-2359 0900-2359 0900-2359 0900-2359 0900-1900 0900-1900
Garvie Island
D803 0900-2030 0900-2359 0900-2359 0900-2359 0900-2359 0900-2359 0900-1900 0900-1900
JW Danger Area
J1 1400-1530 0900-1300
1500-1900
JW Danger Area
J4
JW Danger Area
J5
Cape Wrath
Western Firing
Extension
0900-2359
Clyde Areas
D 509
0900-1400
1500-2000
1. 070
The planned times of firings at Cape Wrath Range and JW Firing areas is indicated in the grid above. There may be changes to this planned activity.
Daily GUNFACTS Broadcasts and Cape Wrath Range Broadcasts will contain the most up to date information regarding the activation of the areas.
Times are Local.
Live Firing and Gunnery
Joint Warrior Firing and Danger Areas
J5
J4
J1
Area J 1
5715N 00940W
5715N 00910W
5704N 00815W
5630N 00815W
5639N 00940W – ORIGIN
Area J 4
5924N 00500W
5905N 00500W
5905N 00556W
5924N 00557W – ORIGIN
Area J 5
5844N 00555W
5905N 00556W
5905N 00500W
5859N 00500W – ORIGIN
Cape Wrath Range
Western Firing Extension
5845N 00530W
5845N 00500W
5832N 00500W
5832N 00530W - ORIGIN
59N
58N
57N
56N
006W
009W 007W
D803
Cape Wrath
Range
Western Firing
Extension
D801
D802
Denial of GPS Service
1. Denial of GPS services through the jamming of the GPS signal is an essential part
of preparation for military operations and is a possible risk to both military and civilian
maritime and air users. The ability to conduct jamming is spread throughout the modern
world. Naval Forces are required to train under such conditions in order to demonstrate
the effects it has systems and to train personnel in other modes of operating. The jamming
equipment is located at:
a. Faraid Head - 58 36.2N 004 46.4W
b. Loch Ewe - 57 51.9N 005 41.1W
2. Jamming of GPS signals may affect equipment using GPS within the North Minch
northwards from Rubha Réidh 57-52N 005-48W to Stoer Head 58-14N 005-24W and
within 35 nautical miles line of sight from the Faraid Head jamming site, depending on
receiver antenna height. Plots showing predictions of areas where interference can be
expected are included at the end of this section.
3. Subject to approval from the MOD to conduct GPS denial training the planned times
GPS Denial are shown in the time table on the next page. A sécurité message will be
broadcast by Stornoway and Shetland CG prior to and on completion of the jamming
period, during which time GPS receivers and any related equipment may suffer
intermittent/total failure, or give incorrect position info or default to DR mode. If this occurs,
DCS is to be manually updated at regular intervals. Crews should be aware of these
limitations and use alternative means of navigation during jamming periods to confirm their
position and check the equipment on completion. Military vessels in Faraid Head jamming
area are as part of their Gunnery clear range procedure to inform civilian vessels in their
Loch Ewe
Faraid Head
Denial of GPS Service
vicinity via VHF that GPS jamming is taking place and that they should manually update
their DSC position.
4. All military vessels and aircraft will be ordered to maintain a lookout for any
abnormal vessel behaviour during jamming periods and warn vessels as required
Emergency cease jam via Stornoway CG, the jamming station or joint warrior duty
controller 01436 674321 ext. 6469
GPS DENIAL TIME TABLE
Date Loch Ewe
57 51.9 N
005 41.1 W
Faraid Head
58 36.2 N
004 46.4 W
Tue 17 Apr 12 1100 – 1200 1130 – 1230
1600 – 1700 1730 – 1830
1100 – 1200
1400 – 1500 1500 – 1600
Wed 18 Apr 12
1800 – 1900 1900 – 2000
1100 – 1200
1400 – 1500 1500 – 1600
Thr 19 Apr 12
1800 – 1900 1900 – 2000
0900 – 1000 1100 – 1200
1530 – 1630 1400 – 1500
Fri 20 Apr 12
1900 – 2000
0900 – 1000 1030 – 1130
1400 – 1500 1500 – 1600
Sat 21 Apr 12
2030 – 2130
Sun 22 Apr 12 1230 – 1330
1900 – 2000
0800 – 0900 1100 – 1200
1200 – 1300 1400 – 1500
1500 – 1600 1600 – 1700
Mon 23 Apr 12
1800 – 1900
1030 – 1130 1200 – 1300
1230 – 1330 1500 – 1600
1600 – 1700 1700 – 1800
Tue 24 Apr 12
1930 – 2030
0900 – 1000 1100 – 1200
1300 – 1400 1630 – 1730
1500 – 1600
Wed 25 Apr 12
1900 – 2000
Thr 26 Apr 12 0900 – 1000
1200 – 1300
ALL TIMES LOCAL
Denial of GPS Service
GPS RECEIVER INTERFERENCE PREDICTION PLOTS FOR FARAID HEAD
The shaded areas represent the 30dB J/S threshold vs the minimum GPS L1 C/A-Code
measured signal strength of -157dBW.
Faraid Head. Receiver antenna height 4m
Faraid Head. Receiver antenna height 25m
Plots reproduced with permission of DSTL.
Denial of GPS Service
GPS RECEIVER INTERFERENCE PREDICTION PLOTS FOR LOCH EWE
The shaded areas represent the 30dB J/S threshold vs the minimum GPS L1 C/A-Code
measured signal strength of -157dBW.
Loch Ewe. Receiver antenna height 4m
Loch Ewe. Receiver antenna height 25m
Plots reproduced with permission of DSTL.
Unexploded Ordnance Advice
1. The following general advice is offered to anyone discovering anything believed to
be unexploded ordnance:
DIVERS DO NOT TOUCH
FISHERMEN Contact the coastguard. If this is not possible, lay the item
in about 60ft of water, away from shipping routes and mark
the position with a float.
EVERYONE DO NOT TOUCH – dial 999 for coastguard or Police.
Contact Telephone Numbers
UNEXPLODED ORDINANCE (FLEET DUTY CONTROLLER) 01923 956366
FISHERMAN’S HOTLINE (FLEET DUTY CONTROLLER)
SUBMARINE RELATED 01923 956366
HOTLINE (JOINT WARRIOR DUTY CONTROLLER)
GPS JAMMING RELATED 01436 674321 Extn 6469
JOINT WARRIOR CONTROLLER 01436 674321 Extn 4372
CAPE WRATH INFORMATION LINE FREEPHONE 0800 833300
If future versions of this brief are not required please contact:
Joint Tactical Exercise Planning Staff, JHQ Room 301, Northwood Headquarters,
Sandy Lane, NORTHWOOD, Middlesex HA6 3HP
Telephone: 01923 958788.
E-Mail: JTEPS-SM-SO2@mod.uk
Some people accuse me of thinking the world revolves around me, but it doesn't. It revolves around the Sun which shines out of my arse.



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