JS Labs maritime review

NAVTEX Review

Rolling review of recent NAVTEX notices, with emphasis on operational changes, weather warnings, navigation hazards, and signal integrity issues.

Updated 2026-03-14 16:45 UTC Window 24 hours Latest reception 2026-03-14 15:40:16

What this is

This page is a rolling 24-hour review of the latest NAVTEX corpus. The letter codes in the feed are NAVTEX B1 transmitter identifiers rather than plain-language sea areas, so the page keeps the raw code activity while also resolving likely source stations where the message text is clear enough to support it.

Older rebroadcast notices removed in this edition: 54.

106Messages reviewed
16B1 codes active
14Stations resolved
warningTop keyword

Data files: review JSON | message corpus JSON | overview JSON

Source Stations

The chart below maps the likely transmitter stations resolved in this window. It is a readability layer over the raw B1 codes, not a replacement for the underlying message corpus.

Resolved messages 84 of 106
Unresolved from noisy text 22

-10 deg -5 deg 0 deg 5 deg 10 deg 15 deg 20 deg 25 deg 30 deg 35 deg 35 deg 40 deg 45 deg 50 deg 55 deg G - Cullercoats (29 messages)G29 S - Pinneberg (10 messages)S10 T - Oostende Radio (9 messages)T9 V - Oostende (Thames Approaches relay) (2 messages)V2 E - Niton (8 messages)E8 K - Niton (France relay) (2 messages)K2 O - Portpatrick (6 messages)O6 W - CROSS La Garde (5 messages)W5 U - Mondolfo (4 messages)U4 V - Sellia Marina (3 messages)V3 C - Odesa (2 messages)C2 Q - Split (2 messages)Q2 P - Netherlands Coastguard Radio (1 messages)P1 X - Cabo La Nao (1 messages)X1

Station positions follow the ITU List IV coast station table (2025). Global reference: WMO NAVTEX stations map.

CodeLikely stationCoverageMessages
GCullercoatsNorth Sea and north-east UK coast29
SPinnebergGerman Bight and German North Sea10
TOostende RadioBelgian coast and southern North Sea9
ENitonEnglish Channel and western approaches8
OPortpatrickIrish Sea and western UK approaches6
WCROSS La GardeProvence, Ligurian Sea and western Mediterranean5
UMondolfoAdriatic Sea and central Italian coast4
VSellia MarinaIonian Sea and Strait of Messina3
COdesaNorth-west Black Sea2
KNiton (France relay)Channel Islands and north-east French coast2
QSplitAdriatic Sea2
VOostende (Thames Approaches relay)Thames approaches and Dover approaches2
PNetherlands Coastguard RadioDutch EEZ and southern North Sea1
XCabo La NaoWestern Mediterranean and Balearic approaches1

B1 Code Activity

Raw transmitter-code activity in the current window, with likely station names where they can be resolved from the message body.

CodeMessagesLikely source
G38Cullercoats (9 unresolved)
T13Oostende Radio (4 unresolved)
E10Niton (2 unresolved)
S10Pinneberg
O8Portpatrick (2 unresolved)
V5Sellia Marina, Oostende (Thames Approaches relay)
W5CROSS La Garde
U4Mondolfo
X3Cabo La Nao (2 unresolved)
K2Niton (France relay)
C2Odesa
Q2Split
N1Unresolved from message text (1 unresolved)
F1Unresolved from message text (1 unresolved)
L1Unresolved from message text (1 unresolved)
P1Netherlands Coastguard Radio

Keyword Concentration

KeywordMatches
warning20
fog15
gale10
survey7
ais4
exercise3
ice1

At a Glance

  • The window contains 106 messages; dominant B1 codes were G (38), T (13), E (10); keyword concentration led by warning (20), fog (15), gale (10), survey (7).
  • [unknown] Code V. UFO GUF DHM MGSY PMX CT GJCY GBPYONG ZYVJO G LSPMS FMZPYHFZONG YZBM H MGCHIIK XMBY | UNTIL FURTHER NOTICE. Decode quality medium.
  • [GA50] Code G. DOGGER. | SOFIA OFFSHORE WIND FARM. Decode quality medium.
  • [GA54] Code G. HUMBER. | BESSEMER GAS FIELD. Decode quality medium.
  • No direct mentions were found in this corpus window.

Main Developments

  • [unknown] Code V. UFO GUF DHM MGSY PMX CT GJCY GBPYONG ZYVJO G LSPMS FMZPYHFZONG YZBM H MGCHIIK XMBY | UNTIL FURTHER NOTICE. Decode quality medium.
  • [GA50] Code G. DOGGER. | SOFIA OFFSHORE WIND FARM. Decode quality medium.
  • [GA54] Code G. HUMBER. | BESSEMER GAS FIELD. Decode quality medium.
  • [GA73] Code G. FORTH. | NEART NA GAOITHE WINDFARM.
  • [GA82] Code G. VIKING. | BERYL OIL FIELD.
  • [GA90] Code G. TYNE. | WHITBY HIGH LIGHT 54-28.7N 000-34.1W UNRELIABLE.
  • [GA96] Code G. HUMBER. | DUDGEON WIND FARM.
  • [GA61] Code G. HUMBER. | RACE BANK WIND FARM.

Weather and Sea

  • [GA54] Code G. HUMBER. | BESSEMER GAS FIELD. Decode quality medium.
  • [GA61] Code G. HUMBER. | RACE BANK WIND FARM.
  • [GA62] Code G. HUMBER. | WESTERMOST ROUGH WINDFARM.
  • [GA65] Code G. HUMBER. | FLAMBOROUGH HEAD LIGHTHOUSE 54-07.0N 000-05.0W FOG SIGNAL INOPERATIVE.
  • [GB74] Code G. GALE WARNING SATURDAY 14 MARCH 0958 UTC | VIKING.

Navigation and Safety Alerts

  • [unknown] Code V. UFO GUF DHM MGSY PMX CT GJCY GBPYONG ZYVJO G LSPMS FMZPYHFZONG YZBM H MGCHIIK XMBY | UNTIL FURTHER NOTICE. Decode quality medium.
  • [GA50] Code G. DOGGER. | SOFIA OFFSHORE WIND FARM. Decode quality medium.
  • [GA54] Code G. HUMBER. | BESSEMER GAS FIELD. Decode quality medium.
  • [GA73] Code G. FORTH. | NEART NA GAOITHE WINDFARM.
  • [GA82] Code G. VIKING. | BERYL OIL FIELD.
  • [GA90] Code G. TYNE. | WHITBY HIGH LIGHT 54-28.7N 000-34.1W UNRELIABLE.
  • [GA96] Code G. HUMBER. | DUDGEON WIND FARM.
  • [GA61] Code G. HUMBER. | RACE BANK WIND FARM.

Electronic Interference and Navigation Integrity

  • [unknown] Code V. UFO GUF DHM MGSY PMX CT GJCY GBPYONG ZYVJO G LSPMS FMZPYHFZONG YZBM H MGCHIIK XMBY | UNTIL FURTHER NOTICE. Decode quality medium.
  • [GA54] Code G. HUMBER. | BESSEMER GAS FIELD. Decode quality medium.
  • [GA73] Code G. FORTH. | NEART NA GAOITHE WINDFARM.
  • [GA62] Code G. HUMBER. | WESTERMOST ROUGH WINDFARM.

Special Operations and Military Activity

  • [XA77] Code X. NR-2474/2025 | PALOS. Issue line 140350 UTC MAR 26. Decode quality medium.
  • [WA74] Code W. AVURNAV TOULON 158/26 | PROVENCE. Issue line FROM 160530 UTC MAR 26 TO 161059 UTC MAR 26.
  • [WA75] Code W. AVURNAV TOULON 159/26 | 0 ,:3 - LIGURE - CORSE. Issue line FROM 16 700 UTC MAR 26 TO 160759 UTC MAR 26. Decode quality medium.
  • [WA76] Code W. AVURNAV TOULON 160/26 | PROVENCE - LIGURE - CORSE. Issue line FROM 161400 UTC MAR 26 TO 161859 UTC MAR 26.
  • [UA82] Code U. 9-'5-) 2-4,8, 001/26 JAN 01 (18 REPETITION) | SOUTHERN ADRIATIC SEA - BRINDISI. Issue line 140320 UTC MAR 9 ,$9)!9 4-$89.
  • [UA81] Code U. COASTAL WARNING 112/26 FEB 25 (3 REPETITION) | SOUTHERN ADRIATI JPM MGZHYHZ DAYS 02-03-04-05-06-09-10-11-12-13-16-17-18-19-20-23-24-25-26-27-. Issue line 140320 UTC MAR 26. Decode quality medium.

Regional Watch

  • No direct mentions were found in this corpus window.

Data Quality Notes

  • Decode quality across the window was high=50, medium=43, low=13.
  • 54 older rebroadcast notices were removed because their internal issue times predated the 24-hour operating window.
  • Published timestamps reflect reception time in the received corpus, not necessarily original notice issue time.
  • Repeated or rebroadcast notices can persist inside the rolling window; message IDs are retained for traceability.
  • 13 messages were classified as low decode quality and may contain damaged titles or coordinates.

Regional Focus

The standing watch region for this edition is Strait of Hormuz. Direct-hit count in the current window: 0.