Italy’s coastal NAVTEX circuit has now printed a numbered gunfiring box that is live this afternoon off the Taranto harbour face, not a reprint of this morning’s dedicated Sierra 733 submarine-ops box and not a second Zakynthos firing window. The working primary retrieved this run is English coastal warning 537/26, received on the industry coastal board at 14:54 UTC on 8 November and updated 00:11 UTC on 9 November: COASTAL WARNING 537/26 NOV 06 NORTHERN IONIAN SEA TARANTO GULF. FM 08.00LT UNTIL 12.00LT ON 09 NOV 2026 FM 16.30LT UNTIL 18.30LT ON 09 NOV 2026 FM 08.00LT UNTIL 16.00LT ON 10 NOV 2026 FM 16.30LT UNTIL 18.30LT ON 10 NOV 2026 FM 08.00LT UNTIL 12.00LT ON 11 NOV 2026 FM 16.30LT UNTIL 18.30LT ON 11 NOV 2026 FM 08.00LT UNTIL 12.00LT ON 12 NOV 2026 FM 16.30LT UNTIL 18.30LT ON 12 NOV 2026 IN TANGO 833A ZONE: A. LAT. 40-16.500N 017-30.000E B. LAT. 40-21.750N 017-16.333E C. LAT. 40-24.083N 017-14.167E D. LAT. 40-24.217N 017-13.817E E. LAT. 40-24.500N 017-12.250E F. LAT. 40-17.00N 017-12.00E G. LAT. 40-17.00N 017-15.00E H. LAT. 40-10.00N 017-30.00E WILL BE CARRIED OUT GUNFIRING MILITARY ACTIVITY WITH HELICOPTER TRANSIT FISHING ANCHORAGE AND OTHER UNDERWATER ACTIVITIES ARE PROHIBITED. (BROADCAST VALID 08 NOV 2026 1530 TO 11 NOV 2026 2330 ITALIAN TIME.) Official wording keeps the NOV 06 serial on the header. That is Monday afternoon’s working Italian coastal instrument. It is a four-day eight-point box with a printed gunfiring-with-helicopter sentence and a printed transit ban, not a rewrite of this morning’s dedicated 527/26, not a Tango 833 light-smoke file, and not a Hormuz Attack PDF.
The warning is an Italian coastal NAVTEX product. It is not NAVAREA III 0169/26. It is not NAVAREA IX 433/26. It is not UKMTO 200-26. This afternoon’s companion IMO board remains 130 confirmed incidents as at 6 November, with 25 seafarer fatalities and VIEILA as the named top row. Masters who brief Monday afternoon as a Taranto port closure, as a completed 9–13 November gulf shutdown, as this morning’s Sierra 733 submarine box moved north onto the harbour face, or as overnight 536/26’s light-smoke signals promoted onto a gunfiring sentence will have over-read a timed keep-out. 537/26 tells the bridge which named zone, which eight points, which split local-time windows and which four prohibitions to plot. It does not print a keep-clear radius outside the polygon, a VHF working channel, a hull, an IMO number, a RAM line, a weapon class beyond gunfiring, or a CANCEL THIS MSG DTG beyond the last printed 18.30 LT window on 12 November. Hold the official wording, including “gunfiring military activity with helicopter,” “TANGO 833A,” and “transit fishing anchorage and other underwater activities are prohibited.”
What 537/26 actually printed
The hydrographic text is short and is the working primary. Coastal warning 537/26. Northern Ionian Sea, Taranto Gulf. From 08.00 LT until 12.00 LT on 9, 11 and 12 November 2026, from 08.00 LT until 16.00 LT on 10 November 2026, and from 16.30 LT until 18.30 LT on 9, 10, 11 and 12 November 2026, in Tango 833A zone, the eight-point zone bounded by the coordinates listed above. Gunfiring military activity with helicopter will be carried out. Transit, fishing, anchorage and other underwater activities are prohibited. Broadcast valid 08 November 2026 1530 to 11 November 2026 2330 Italian time. Stay with that wording. The coastal station printed neither a hull name, an IMO number, an MMSI, a flag, a pennant, a gun calibre, a helicopter type, a wreck buoy, a least depth, a restricted-in-ability-to-manoeuvre line, a VHF channel, a numeric harbour berth, a keep-clear radius outside the polygon, nor a “CANCEL THIS MSG” DTG. Do not invent a five-cable or one-nautical-mile halo around the polygon. 537/26 does not print one. Do not invent a 13 November end date. That last evening belongs to wrap 536/26’s light-smoke tape and to dedicated Kerkyra 201/26’s Zakynthos firing, not to this four-day Tango 833A gunfiring box. Do not invent a 130830 UTC kill. That cancel belongs to 201/26, not to 537/26.
The geometry is the first briefing fact. The eight-point box sits on the Taranto harbour-face, not in the southern gulf. North wall 40-24.500 N at 017-12.250 E. South wall 40-10.00 N at 017-30.00 E. West wall 017-12.00 E on points F and the western harbour-face corners. East wall 017-30.000 E on points A and H. That is on the order of 14 nautical miles north–south by about 14 nautical miles east–west, not a circular exclusion and not a TSS amendment. Taranto itself sits on the order of 40-28 N, a few nautical miles north of this north wall. Cape San Vito and the eastern harbour approaches see the western corners. The open gulf toward Gallipoli sees the southeastern corners. This morning’s dedicated 527/26 sits on the order of 39-34 N to 39-15.500 N, more than 40 nautical miles south of this south wall. Two zones. Do not brief a Taranto shutdown from an eight-point harbour-face box. Do not brief a Crotone harbour rewrite. Do not collapse Tango 833A onto Sierra 733. Plot the eight points. Stay out of the polygon during the printed local-time windows for transit, fishing, anchorage and underwater work. Transit is printed as prohibited. Do not convert this morning’s three-activity Sierra 733 ban into this afternoon’s four-activity Tango 833A ban, and do not convert this afternoon’s transit ban onto Sierra 733.
The date line is the second briefing fact. Work is printed as split local-time windows on 9, 10, 11 and 12 November 2026. No 8 November window is printed as closed. No 13 November extension is printed on this number. No weather clause is printed. Monday afternoon is 9 November. The morning window, 08.00–12.00 LT, is 07.00–11.00 UTC in November and is now past this 1130 UTC desk. The afternoon window, 16.30–18.30 LT, is 15.30–17.30 UTC and is still ahead. 10 November is the long morning: 08.00–16.00 LT, 07.00–15.00 UTC, then 16.30–18.30 LT again. 11 and 12 November return to 08.00–12.00 LT plus 16.30–18.30 LT. A passage plan that treats 9–12 November as a continuous Taranto shutdown has joined the split windows. A passage plan that treats 9–13 November as one Ionian closure has borrowed wrap 536/26’s last evening and dedicated 201/26’s five-day Zakynthos tape. A passage plan that drops the watch after 12.00 LT because “Italian coastal firings are morning-only” has under-read a 16.30–18.30 LT second window on every named day. 537/26 is a numbered radio alert. It lives in the printed local-time windows through 18.30 LT on 12 November unless a later Italian coastal warning cancels or amends it. The broadcast-valid line, 1530 Italian time on 8 November to 2330 Italian time on 11 November, is the NAVTEX transmission window, not a second operations clock. Do not invent a 0700–1300 UTC Romanian firing window on this box.
The instruction line is the third briefing fact. Transit, fishing, anchorage and other underwater activities are prohibited. That is tighter than this morning’s dedicated 527/26, which banned anchorage, fishing and underwater work and did not print a transit ban, and tighter than wrap 536/26, which told naval units to pay attention and avoid hindering the exercise. The coastal station printed gunfiring military activity with helicopter as the reason. It did not print “artillery,” “missile,” “mine,” “submarine,” or a named hull. Do not convert a gunfiring-with-helicopter box into this morning’s submarine-ops sentence because both landed on the 8 November Italian board. Do not convert it into 536/26’s light-smoke-colour signals because both sit in Tango 833. Give the eight points, the split local-time windows and the four prohibitions. Do not occupy 40-17 N, 017-20 E at 17.00 LT on 9, 10, 11 or 12 November as a transit because “Taranto is open.”
Industry-reprint colour, held separately: SeaLagom first carried 537/26 with a received stamp of 14:54 UTC on 8 November, restating the eight-point Tango 833A box, the split local-time windows, the gunfiring-with-helicopter sentence and the four prohibitions. The 9 November 00:11 UTC update on that board did not move a coordinate or a window. Hold that as colour of the English coastal product, not as a second gunfiring piece. Same-board wrap unused as dedicated this run: coastal warning 536/26, Tango 833 Alfa zone, launch of light-smoke colour and surface ACTIVITITE signals, split local-time windows 9–13 November, same eight-point box, naval units to avoid hindering the exercise. Official wording on that file keeps ACTIVITITE. 536/26’s first 9 November window, 1230–1600 LT, opens about an hour after this 1130 UTC desk. Two products, one polygon. Do not collapse 536/26 onto 537/26. Do not collapse 537/26 onto Tango 833 Alfa light-smoke.
What this is not
This is not a rewrite of this morning’s dedicated coastal warning 527/26, and it is not the Sierra 733 submarine box moved north. This morning’s dedicated Italian piece remains: NORTHERN IONIAN SEA TARANTO GULF. From 090500Z to 092359Z 9 November 2026 in zone Sierra 733 ALFABRAVODELTA, six points 39-34.00N 017-00.00E / 39-34.00N 017-38.00E / 39-20.00N 017-38.00E / 39-15.500N 017-25.000E / 39-15.500N 017-11.000E / 39-24.500N 017-11.000E, military activities with submarine ops, anchorage, fishing and other underwater activities prohibited. That box sits more than 40 nautical miles south of Tango 833A. 9 November is Sierra 733’s only day and Tango 833A’s first day. A master shaping the Gulf of Taranto this Monday may owe both: 527/26’s southern-gulf three-activity ban through 2359Z tonight, and 537/26’s harbour-face four-activity ban in the printed local-time windows. Do not brief Monday afternoon as “527/26 became gunfiring.” Do not drop 527/26 because 537/26 exists. Do not invent a transit prohibition on 527/26 because 537/26 printed one. Do not invent a helicopter sentence on Sierra 733. Do not invent a 0500Z–2359Z overlay on Tango 833A.
This is not coastal warning 536/26, and it is not a Tango 833 light-smoke file filed again. 536/26 remains wrap: Tango 833 Alfa, eight points from 40-16.500N 017-30.000E to 40-10.00N 017-30.00E, launch of light-smoke colour and surface activity signals, split local-time windows 9–13 November including 1230–1600 LT and 1900 LT–0001 LT blocks, naval units to pay attention and avoid hindering the exercise, broadcast valid 08 November 2026 1530 to 13 November 2026 1130 Italian time. Official wording on that file keeps ACTIVITITE. Same eight-point box as 537/26. Light-smoke signals are not gunfiring. 536/26 runs through 13 November. 537/26’s last printed evening is 12 November. Do not brief Monday afternoon as “536/26 became gunfiring.” Do not apply 536/26’s 13 November last evening to 537/26. Do not apply 537/26’s transit ban to 536/26. Carry both on the same polygon: gunfiring windows on 537/26, light-smoke windows on 536/26.
This is not a rewrite of dedicated Kerkyra 201/26, and it is not the Zakynthos firing moved into the Gulf of Taranto. Saturday morning’s dedicated Hellenic piece remains: IONIAN SEA. Activation of firing practice area ‘ZAKYNTHOS’. Live firing by the Slovenian Air Force from 9 until 13 November 2026, 0630–0730 UTC daily plus 0930–1045 UTC on 9, 10 and 12 November and 1045–1200 UTC on 11 November, four-point box 37-38.6N 020-00.4E / 37-20.1N 020-59.5E / 36-53.2N 020-56.6E / 37-19.4N 019-58.2E, avoid crossing, cancel 130830 UTC 13 November. That box sits west of Zakynthos, two degrees east and two degrees south of Tango 833A. 9 November is the first Zakynthos morning and the first Tango 833A day. Do not brief Monday afternoon as “201/26 became a helicopter.” Do not invent a 0630–0730 UTC overlay on 537/26 because 201/26 prints one.
This is not dedicated NAVWARN 1342/26, and it is not a Drapano FORACS box converted into gunfiring. Saturday’s dedicated Hellenic piece remains: CRETAN SEA. CRETE ISLAND. DRAPANO POINT. FORACS checks, 9–13 November, 0600Z–1600Z each day, eight-point box around 35-28 N 024-20 E, crossing prohibited. That box sits two seas east. Do not brief Monday afternoon as “FORACS moved to Taranto.” Do not invent a 0600Z–1600Z overlay on 537/26.
This is not dedicated Irakleio 1409/26, and it is not a Plateia firing. Saturday morning’s dedicated Hellenic piece remains: SARONIKOS GULF, firing practice area ‘PLATEIA’, 9 and 16 November, 0400–1700 UTC, four-point box around 37-47 N 023-20 E, avoid crossing, cancel 1800 UTC 16 November. Two discrete 13-hour days, not a 9–16 November shutdown. A Saronic box is not a Taranto harbour-face box. Keep those numbers on their own sheets.
This is not this morning’s other dedicated file, Irakleio 1404/26, and it is not a Kobi Ruegg survey. 1404/26 remains the southeast Cretan Sea fiber-optic track, ‘KOBI RUEGG’, 7–11 November, 2 NM safety distance, cancel 112200 UTC 11 November. A Taranto gunfiring box is not a Cretan Sea survey line.
This is not this afternoon’s companion IMO 130-count, not Sunday night’s dedicated Update 112, and not Sunday morning’s dedicated 199-26 or 200-26. The IMO board now prints 130 confirmed / 25 dead as at 6 November, with VIEILA as the named top row. Update 112 remains the 177-count note, ICOD 081300 UTC 8 November, first JMIC naming of HUDA against dedicated 198-26. 199-26 remains the tanker fire 8 NM northwest of Khasab. 200-26 remains the outbound Hormuz projectile. 198-26 remains the bulk carrier 18 NM east of Khor Fakkan. A Taranto Gulf gunfiring box does not belong on that tape.
This is not dedicated NAVWARN 813/26, and it is not a Varna boarding box. Sunday night’s dedicated Bulgarian piece remains: SOUTH OF CAPE GALATA, boarding operations 0230–0700 UTC 12 November, four corners around 43-07 N 027-56 E. Official English 814/26 remains wrap on that file: VARNA LAKE, boarding 0200–0700 UTC 12 November, centre 43-11.65 N 027-50.80 E, radius 3 cables. Dedicated 799/26 remains Varna port and road, 0500–0900 UTC 10 November and 0800–1200 UTC 13 November. Those are Black Sea harbour products. They do not belong on Tango 833A.
Operational implications
For a master already shaping a Taranto, Gallipoli, Santa Maria di Leuca or northern-gulf passage today, Monday afternoon is a timed keep-out problem before it is a security rewrite. The coastal station printed an eight-point Tango 833A box, named gunfiring military activity with helicopter, named split local-time windows on 9–12 November, and named a ban on transit, fishing, anchorage and other underwater activities. A four-activity prohibition under a bounded-zone sentence is a closed polygon for ships that would otherwise transit, anchor, fish or put divers or ROVs in the water during those hours. It is not AIS-optional. It is not a Taranto port closure. It is not 527/26’s southern-gulf submarine-ops box. It is not 536/26’s light-smoke notice. A passage plan that only budgeted this morning’s Sierra 733 hours, or that treated the harbour face as clean because 536/26 is a light-smoke notice, has not budgeted a four-day gunfiring box whose next window opens at 16.30 LT this afternoon. Give the polygon. Do not transit, anchor, fish or put underwater plant inside it during the printed windows. Do not treat a missing harbour-master closure as permission to run 40-17 N, 017-20 E at 17.00 LT.
The 9 November Ionian tape is the operational content a DPA has to get right. Dedicated 527/26 still tells the bridge not to anchor, fish or work underwater inside Sierra 733 through 2359Z tonight. 537/26 tells the bridge not to transit, fish, anchor or work underwater inside Tango 833A in the printed local-time windows through 12 November. Wrap 536/26 still tells naval units not to hinder light-smoke signals in the same Tango 833 polygon on split local-time windows through 13 November. Dedicated 201/26 still tells the bridge to avoid a Zakynthos live-firing box in split morning hours through 13 November. Dedicated 1342/26 still tells the bridge not to cross the Drapano polygon 0600Z–1600Z through 13 November. Dedicated 1409/26 still tells the bridge that Plateia fires on 9 and 16 November, 0400–1700 UTC. A passage plan that only plotted “the Ionian is on firing this week” has not budgeted a southern Taranto submarine box, a harbour-face gunfiring box, a Tango 833 light-smoke pair, a Zakynthos live-firing box, a Cretan FORACS box and a Saronic Plateia day on the same calendar Monday. Charterers asking whether “Taranto is closed for gunfiring” will not be answered by this file. What arrived is a harbour-face four-activity ban in split local-time windows that dies after 18.30 LT on 12 November, not a harbour-master closure.
Taranto, Crotone, Gallipoli and Santa Maria di Leuca remain open on this text. 537/26 does not print a harbour-master closure, a pilot-boarding amendment, or a VHF working channel for the range. Hulls that would otherwise have transited the harbour-face banks inside 40-24.5 N to 40-10 N, 017-12 E to 017-30 E during the printed windows need a route outside the polygon, or a clock that sits between the morning kill and 16.30 LT. Between 12.00 LT and 16.30 LT on 9, 11 and 12 November, 537/26 does not print a live gunfiring window. Do not invent a 24-hour transit ban. Do not treat the 12.00–16.30 LT gap as a printed working corridor if wrap 536/26’s 1230–1600 LT light-smoke window is live on the same polygon. Carry both clocks. Do not invent a 2 NM halo north of 40-24.5 N. Plot the north wall. Stay out of the polygon for the four printed activities in the printed windows. Report actual gunfiring, helicopter activity, an unlit hull, or a close-quarters situation to IMRCC Rome and to the company security officer. Logging 537/26 is not a substitute for a sighting report.
A night transit after 18.30 LT is not a printed all-clear on 9–12 November if the next morning window is still on the tape. 537/26’s last printed evening is 18.30 LT on 12 November. It does not print 0000–0800 LT as a safe window, and it does not print RAM-off at sunset. Give the printed prohibitions in the printed windows. Do not linger inside the polygon as if the notice had printed a working corridor. Do not treat Taranto Roads as closed unless the harbour master says so. Watch a later Italian coastal warning that moves a point, adds a hull, a weapon class, a radius or a VHF channel, or extends past 18.30 LT on 12 November.
Keep the dedicated files on their own lines. This morning’s dedicated 527/26 remains the Sierra 733 submarine-ops box through 092359Z tonight. Wrap 536/26 remains unused as dedicated: Tango 833 Alfa, light-smoke colour and surface activity signals, split local-time windows 9–13 November. Dedicated Kerkyra 201/26 remains Saturday morning’s dedicated Zakynthos firing through 130830 UTC 13 November. Irakleio 1409/26 remains Saturday morning’s dedicated Plateia windows on 9 and 16 November. NAVWARN 1342/26 remains Saturday’s dedicated Drapano FORACS box through 13 November. Last night’s dedicated 813/26 remains the Cape Galata boarding box on 12 November. Official English 814/26 remains wrap on 813/26. Dedicated 799/26 remains the Varna port-and-road closure on 10 and 13 November. This morning’s other dedicated file remains Irakleio 1404/26. This afternoon’s companion IMO board remains 130 confirmed / 25 dead as at 6 November, VIEILA named. UKMTO still ends at dedicated 200-26 on the Attack line, dedicated 199-26 on the Suspicious Activity line, and dedicated 198-26 on the Advisory line. JMIC still ends at dedicated Update 112. NAVAREA IX still lists 433/26 as the in-force list. Official Cyprus 345/26, NAVAREA III 0170/26, official HNHS 1355/26 and NAVAREA IX 433/26 remain unused as dedicated. Do not recast 9 November afternoon as a Taranto exclusion zone, as a Sierra 733 rewrite, as a Tango 833 light-smoke conversion, as a 13 November shutdown, or as a completed 536/26 naming.
What Operators Should Note
- Log 537/26 as a four-day Tango 833A gunfiring box, not as a Sierra 733 rewrite and not as a light-smoke conversion. English coastal warning 537/26, Northern Ionian Sea, Taranto Gulf. Tango 833A. Eight points: 40-16.500N 017-30.000E / 40-21.750N 017-16.333E / 40-24.083N 017-14.167E / 40-24.217N 017-13.817E / 40-24.500N 017-12.250E / 40-17.00N 017-12.00E / 40-17.00N 017-15.00E / 40-10.00N 017-30.00E. Gunfiring military activity with helicopter. Transit, fishing, anchorage and other underwater activities are prohibited. Windows: 08.00–12.00 LT on 9, 11 and 12 November; 08.00–16.00 LT on 10 November; 16.30–18.30 LT on 9, 10, 11 and 12 November. Broadcast valid 08 November 2026 1530 to 11 November 2026 2330 Italian time. Official wording keeps the NOV 06 serial. The warning names neither hull, IMO, VHF, keep-clear radius outside the polygon, RAM status, weapon class beyond gunfiring nor a CANCEL THIS MSG DTG. SeaLagom first carried the text at 14:54 UTC on 8 November. Replace nothing in the 527/26 folder; add this number on the Taranto harbour-face sheet.
- Plot the eight-point box, not a single circle and not a Taranto closure. North wall 40-24.500 N. South wall 40-10.00 N. West wall 017-12.00 E. East wall 017-30.00 E. On the order of 14 by 14 nautical miles on the Taranto harbour-face, a few nautical miles south of the harbour and more than 40 nautical miles north of Sierra 733’s north wall. Gallipoli westbound, the eastern harbour approaches and the open-gulf lane all see a corner. Do not brief a port shutdown. Do not drop the north wall because the next port is Taranto. Do not convert this morning’s three-activity ban into this afternoon’s transit prohibition, and do not convert this afternoon’s transit prohibition onto Sierra 733.
- Hold the split local-time windows and the 12 November last evening. Next live 537/26 window at this 1130 UTC desk is 16.30–18.30 LT today, 15.30–17.30 UTC. This morning’s 08.00–12.00 LT window is past. 10 November is the long morning, 08.00–16.00 LT. Last printed evening is 18.30 LT on 12 November, not 13 November and not 130830 UTC. Do not treat 8 November as already closed in Tango 833A. Do not treat 9–13 November as a Taranto shutdown. Do not apply 201/26’s 0630–0730 UTC hours to this number. Do not apply 536/26’s 13 November last evening to this number. Watch a later Italian coastal warning that moves a point, adds a hull, a weapon class, a radius or a VHF channel, or extends past 18.30 LT on 12 November.
- Carry 536/26 as wrap on the same polygon, not as 537/26 facts. Coastal warning 536/26 remains wrap: Tango 833 Alfa, light-smoke colour and surface ACTIVITITE signals, split local-time windows 9–13 November including 1230–1600 LT today, eight-point box identical to 537/26, unused as dedicated. Official wording keeps ACTIVITITE. Do not collapse 536/26 onto 537/26. Do not invent a light-smoke sentence on 537/26. Do not invent a transit ban on 536/26. Between 12.00 LT and 16.30 LT today the gunfiring window is off; the light-smoke window on wrap 536/26 may still be live. Carry both clocks.
- Carry the 9 November Ionian overlap, then kill each notice on its own clock. 537/26: no transit, fishing, anchorage or underwater work inside Tango 833A in the printed local-time windows through 18.30 LT 12 November. Dedicated 527/26: no anchorage, fishing or underwater work inside Sierra 733 through 2359Z tonight. Dedicated 201/26: Zakynthos live firing, split morning hours 9–13 November, cancel 130830 UTC 13 November. Dedicated 1409/26: Plateia, 0400–1700 UTC on 9 and 16 November. Dedicated 1342/26: Drapano FORACS, 0600Z–1600Z 9–13 November. Wrap 536/26 remains the Tango 833 light-smoke pair. Do not merge the gunfiring onto the submarine box or onto Zakynthos. Do not drop 527/26 because 537/26 exists.
- Hold the Black Sea, Cretan Sea and Hormuz tape on their own sheets. This morning’s other dedicated file remains Irakleio 1404/26, ‘KOBI RUEGG’, 2 NM, through 112200 UTC 11 November. Last night’s dedicated 813/26 remains the Cape Galata boarding box on 12 November; official English 814/26 remains wrap. Dedicated 799/26 remains Varna port and road on 10 and 13 November. This afternoon’s companion IMO board remains 130 confirmed / 25 dead as at 6 November, VIEILA named, not a 197-26 PDF naming. Dedicated 199-26 remains the Khasab tanker fire. Dedicated 200-26 remains the outbound Hormuz projectile. Dedicated 198-26 remains the Khor Fakkan bulk carrier. JMIC remains dedicated Update 112, 177 incidents, ICOD 081300 UTC 8 November. UKMTO still ends at 200-26. Official Cyprus 345/26, NAVAREA III 0170/26, official HNHS 1355/26 and NAVAREA IX 433/26 remain unused as dedicated. Sightings of gunfiring, helicopter activity, an unlit hull or a close-quarters situation go to IMRCC Rome and to the CSO; 537/26 itself prints no VHF working channel.
Regulas Shipping will keep lining coastal warning 537/26 against this morning’s dedicated 527/26 and against wrap 536/26 so operators can treat Monday’s Taranto harbour-face tape as a 9–12 November Tango 833A gunfiring box with split local-time windows and a transit, fishing, anchorage and underwater-work ban, not as a Sierra 733 rewrite, a light-smoke conversion, or a Taranto port closure.
