Bulgaria’s Navy Hydrographic Service has now printed a drifting-mine plot east of Cape Maslen Nos on both official boards, and it is Wednesday night’s second working primary, not a rewrite of Thursday morning’s dedicated Maslen Nos container pair and not a reprint of this morning’s dedicated CS MARAM cable line. The working primary is the English in-force board on hs-navy.mod.bg, which now starts at NAVWARN 835/26 and then carries NAVWARN 834/26: BLACK SEA. BULGARIA. EAST OF CAPE MASLEN NOS. 111335 UTC NOV 2026 DRIFTING MINE SIGHTED IN 42-16.90N 028-13.48E. DANGER TO NAVIGATION. MARINERS REQUESTED TO NAVIGATE WITH CAUTION AND MAINTAIN SAFE DISTANCE. Official English has taken 834. Official Bulgarian on the same service now opens with НАВИМ № 835/11.11.2026 г. and then carries НАВИМ №834/ 11.11.2026 г.: ИЗТОЧНО ОТ МАСЛЕН НОС. В 1335 UTC на 11 НОЕ 2026 е наблюдавана дрейфаща мина в т.к.: 42-16.90 N 028-13.48 E. Мореплавателите да плават с повишено внимание и да спазват безопасна дистанция. The latitudes match. The longitudes match. The 1335 UTC 11 November sighting clock matches. The object is a mine on both boards. That is the product. It names one plot, a sighting clock, a navigational danger, caution, and a safe distance. It does not print a hull, an IMO number, a mine class, a radius in cables, a wreck buoy, a least depth, a pollution line, a cancel clock, or a port closure.
Industry coastal reprints and SeaLagom carry the same English body, first seen 14:44 UTC on 11 November and updated 16:25 UTC. Varna Radio NAVTEX ZCZC JA82 111400 UTC NOV 26 reprints the same 834 plot, wrap, unused as a second Maslen Nos mine piece. Official English and the industry reprint agree on the coordinate and on the drifting-mine tag. Wednesday night is the dedicated conversion, not a wait for a later NAVAREA III reprint, and not a licence to treat 835/26’s 20-foot container as the same object. Masters who brief Wednesday night as two containers reprinted, as Mentor moved south, as the standing 003/26 northwest-Black Sea minefield converted onto 42-16.90N, or as a Burgas closure will have misread the board.
What the hydrographic text actually sets
The hydrographic text is short and is the working primary. NAVWARN 834/26. Black Sea. Bulgaria. East of Cape Maslen Nos. 111335 UTC 11 November 2026. Drifting mine sighted in 42-16.90N 028-13.48E. Danger to navigation. Mariners requested to navigate with caution and maintain safe distance. Stay with that wording. The Hydrographic Service printed a cape tag. It printed a sighting clock. It printed one coordinate. It printed “drifting mine.” It printed danger to navigation. It printed caution. It printed maintain safe distance. It did not print a hull name. It did not print an IMO number, an MMSI, a flag, a call sign, or a pennant number. It did not print “moored,” “contact,” “influence,” “acoustic,” or a NATO mine class. It did not print a radius in cables or nautical miles. It did not print a wreck buoy, a light, a least depth, or a swept-channel offset. It did not print a drift vector, a south set, or a knot figure. It did not print a cancel time of the form CANCEL THIS MSG. It did not print a VHF working channel, an MRCC mailbox, or a harbour-master closure of Burgas, Sozopol, Ahtopol, Tsarevo or Primorsko. The instruction is caution and a safe distance, not a closed box around the cape, and not a one-nautical-mile ship berth. Do not invent a five-cable halo because dedicated 766/26 used that number on Khoryv. Do not invent a one-nautical-mile halo because dedicated 789/26 used that number on Akademik. Do not invent a two-nautical-mile halo because dedicated 1411/26 used that number on Abeille Marengo. Give the plot. Give 1335 UTC 11 November. Give caution and a safe distance.
The plot is the first briefing fact. 42-16.90N 028-13.48E sits east of Cape Maslen Nos, not on the cape, not in Burgas Bay, and not on the Varna approaches. Dedicated 790/26 remains Thursday 5 November’s dedicated Maslen Nos pair: two drifting containers reported at 1000 UTC 3 November at 42-19N 028-21E and 42-17N 028-24E, navigational danger, caution. Those two boxes sit further east than tonight’s mine. A mine is not two containers. Do not apply 790/26’s container count onto 834. Do not apply 834’s “maintain safe distance” line onto 790; 790 printed caution, not a numeric berth, and 834 prints a safe distance without a number. Official English 835/26, now the opening live line, remains wrap unused as dedicated: EAST OF CAPE MASLEN NOS, 111345 UTC NOV 2026, DRIFTING 20-FOOT CONTAINER REPORTED IN 42-05.165N 028-07.205E, DRIFTING SOUTH, DANGER TO NAVIGATION, MARINERS REQUESTED TO NAVIGATE WITH CAUTION. That container sits further south than 834, ten minutes later on the clock, and prints a south set that 834 does not print. Do not collapse a drifting mine onto a 20-foot box because both carry the Maslen Nos tag. Do not treat 835 as tonight’s second dedicated file.
Hold the nearby Bulgarian hazard tape. Dedicated 784/26 remains the Ahtopol drifting-tank watch, not a Maslen Nos mine. Dedicated 779/26 remains the four-container Burgas Bay watch, not this southern cape. Dedicated 766/26 remains Khoryv capsized, semi-submerged, without crew or lights at 43-30.60N 028-43.69E, five cables, east of Shabla. Dedicated 768/26 remains Contship Jet sunk at 43-07.80N 028-45.36E. Dedicated 797/26 remains unmanned tanker Mentor, IMO 9340374, at 43-25.1N 028-37.0E, wrap, now off the live Bulgarian opening list — unused as a Mentor revival. Dedicated 789/26 remains Akademik, one nautical mile, through 1700 UTC 30 November. None of those files prints 42-16.90N 028-13.48E. Do not convert tonight’s mine onto Contship, Mentor, Khoryv, Akademik or a Burgas box. Do not convert it onto wrap 810/26, the southwest-of-Kaliakra mine-countermeasure exercise box still on the live board for 11–13 November; an MCM exercise is not a drifting-mine sighting east of Maslen Nos.
Official NAVWARN 003/26 remains wrap, unused as a 834 naming: by information of the Russian Federation’s navigational-safety service, contact minefields on the approaches to Odesa, Ochakiv, Chornomorsk and Pivdennyi have been compromised; drifting, self-activating contact mines represent a threat in the northwestern, western and southwestern Black Sea; mariners to navigate with particular caution. That standing winter card is not tonight’s 42-16.90N plot. Do not brief Wednesday night as “003/26 has now named a mine off Maslen Nos.” Do not promote Odesa, Ochakiv or a self-activating contact class onto 834. 834 printed a sighting, a coordinate and a safe distance. It did not print a minefield, a nationality, or a fuze type.
What this is not
This is not NAVWARN 790/26, and it is not a third Maslen Nos container. Thursday 5 November’s dedicated file remains two drifting containers at 42-19N 028-21E and 42-17N 028-24E, 1000 UTC 3 November, navigational danger, caution. 834/26 does not print a container, does not print 42-19N, and does not print 42-17N. Official English 835/26 remains the live 20-foot container at 42-05.165N 028-07.205E, drifting south, unused as dedicated. Do not join 790, 834 and 835 into one Maslen Nos cargo watch. A mine is not a box.
This is not NAVWARN 797/26, and it is not Mentor moved south. Dedicated Mentor remains an unmanned tanker, IMO 9340374, at 43-25.1N 028-37.0E, east of Cape Kaliakra. 834 prints neither Mentor, 9340374, Kaliakra, nor 43-25.1N. SeaLagom’s last-24-hour withdrawn list includes 797/26. Do not restore Mentor because a new Maslen Nos product appeared. Do not treat a drifting mine as an unmanned tanker.
This is not NAVWARN 766/26, 768/26 or 784/26. Dedicated Khoryv remains five cables east of Shabla. Dedicated Contship Jet remains sunk at 43-07.80N 028-45.36E. Dedicated 784/26 remains the Ahtopol tank. 834 prints none of those hulls and none of those plots. Do not invent a wreck buoy, a least depth or a five-cable figure on 834 because those earlier files used them.
This is not wrap 810/26, and it is not a Kaliakra mine-countermeasure box. Live 810/26 remains a naval-exercise MCM box southwest of Cape Kaliakra, 0500–1900 UTC on 11 and 12 November and 0500–1000 UTC on 13 November, prohibited for navigation, anchoring, fishing, diving and underwater activity. Tonight’s 834 is a single sighting east of Maslen Nos with caution and a safe distance, not a prohibited polygon. Do not join 11–13 November into a western-Black Sea mine shutdown. Do not treat Varna, Kavarna, Balchik, Burgas, Sozopol, Ahtopol or Tsarevo as closed.
This is not dedicated 799/26, 813/26 or 815/26. Dedicated 799/26 remains the Varna port-and-road closure, 0500–0900 UTC 10 November now past, 0800–1200 UTC 13 November still ahead. Dedicated 813/26 remains the 12 November 0230–0700 UTC boarding box south of Cape Galata. Dedicated 815/26 remains the 10 November four-hour Kaliakra exercise box, now past 101200 UTC. 834 prints none of those windows and none of those corners. Do not recast Wednesday night as a third harbour window or as a 10–13 November shutdown.
This is not this morning’s dedicated NAVAREA IX 436/26, not this morning’s dedicated Warning 202-26, and not tonight’s companion IMO 134-count. 436/26 remains the CS MARAM cable-repair line off Pakistan from 11 November. 202-26 remains the unnamed TBC Hormuz tanker. The companion IMO board remains 134 confirmed / 25 dead as at 11 November, TARIF now the named top row. None of those files prints 42-16.90N 028-13.48E. Official English 829/26, 828/26 and 820/26 remain unused as dedicated. Official Cyprus 345/26, NAVAREA III 0172/26, NAVAREA IX 433/26, official HNHS 1378/2026 and official HNHS 1376/2026 remain unused as dedicated. Dedicated 1404/26 is now past 112200 UTC 11 November. UKMTO now ends at dedicated 202-26. No UKMTO 203-26, no Update 113, no IMO 135, no ARN 169, no 437/26 and no official NAVWARN 836 this run.
Operational implications
For a master still holding a Burgas, Sozopol, Ahtopol or Tsarevo coastal passage, or a western-Black Sea night transit east of Maslen Nos, Wednesday night is a mine-plot problem before it is a harbour-closure problem. Bulgaria has printed a drifting mine at 42-16.90N 028-13.48E, sighted 1335 UTC 11 November, danger to navigation, caution, maintain safe distance. Charterers who copied Thursday’s “two containers at 42-19N / 42-17N, caution, not a numeric berth” language into Wednesday night’s pack now have a different object on a different plot. That is not a licence to treat 790/26 as cancelled, and it is not a licence to treat 835/26’s 20-foot container as the same watch. Carry the mine on its own line. Carry the earlier container pair on its own line. Carry 835 as unused wrap until a later desk converts it. Write the object type next to the coordinate.
The ISM and passage-planning split is the operational content a DPA has to get right. A safety-management report that still says “Maslen Nos: two containers, 42-19N and 42-17N, caution” is incomplete against the current board. A safety-management report that says “Maslen Nos: mine, 5 cables, Burgas closed” is over-read against a notice that printed neither a numeric berth nor a port closure. Notify the CSO, the P&I correspondent and the Black Sea underwriter that official English NAVWARN 834/26, now live on hs-navy.mod.bg, reads drifting mine sighted in 42-16.90N 028-13.48E at 111335 UTC 11 November, danger to navigation, mariners requested to navigate with caution and maintain safe distance. Keep 790/26 on the two-container sheet. Keep 835/26 on the unused 20-foot-container sheet. Keep 003/26 on the standing northwest-Black Sea minefield sheet. Do not merge the four into one closed mine-and-cargo file without a later NAVWARN that names a hull against 42-16.90N, marks a wreck buoy, prints recovery, adds a radius, or cancels 834. Do not write a fuze type, a nationality or an Odesa approach onto 834 because 003/26 still warns about compromised contact minefields further north.
The missing numeric berth is an omission, not a completed keep-clear order. Dedicated 766/26 still names five cables on Khoryv. Dedicated 789/26 still names one nautical mile on Akademik. Dedicated 1411/26 still names two nautical miles on Abeille Marengo. 834 names a safe distance without a number. Lookouts, extra deck lighting and a reduced speed through the cape’s eastern approaches are the practical content a master can brief from that sentence. They are not a licence to invent a one-nautical-mile disc around 42-16.90N, and they are not a licence to treat Burgas Bay as closed. Report a sighting to the competent coastal authority. Do not attempt to close, tow or handle the object. A mine that is drifting is not a swept-channel problem the bridge can solve with a radar overlay of Thursday’s container pair.
Keep the dedicated files on their own lines. Thursday’s dedicated 790/26 remains two containers east of Maslen Nos. Dedicated 784/26 remains the Ahtopol tank. Dedicated 779/26 remains the Burgas four-container watch. Dedicated 766/26 remains Khoryv. Dedicated 768/26 remains Contship Jet. Dedicated 789/26 remains Akademik through 30 November. Dedicated 799/26 remains Varna port and road on 13 November 0800–1200 UTC. Dedicated 813/26 remains the 12 November Galata boarding box. This morning’s dedicated 436/26 remains CS MARAM off Pakistan. This morning’s dedicated 202-26 remains the unnamed TBC Hormuz tanker. Tonight’s companion IMO 134-count remains Tarif on top, 134 confirmed / 25 dead as at 11 November. Do not recast 11 November night as a container reprint, as Mentor restored, as a Kaliakra MCM conversion, as a Burgas closure, or as a completed 003/26 naming.
What Operators Should Note
- Log 834/26 as a drifting-mine sighting east of Cape Maslen Nos, not as a third container and not as a harbour closure. Official English NAVWARN 834/26, now live on hs-navy.mod.bg under 835/26: BLACK SEA. BULGARIA. EAST OF CAPE MASLEN NOS. 111335 UTC NOV 2026 DRIFTING MINE SIGHTED IN 42-16.90N 028-13.48E. DANGER TO NAVIGATION. MARINERS REQUESTED TO NAVIGATE WITH CAUTION AND MAINTAIN SAFE DISTANCE. Official Bulgarian НАВИМ №834/ 11.11.2026 г. prints the same 42-16.90 N 028-13.48 E plot, the same 1335 UTC 11 November clock, caution and a safe distance. Official English has taken 834. The latitudes did not split. SeaLagom English, first seen 14:44 UTC 11 November, is reprint colour. Varna Radio NAVTEX ZCZC JA82 111400 UTC NOV 26 is wrap, unused as a second mine piece. No hull, IMO, mine class, radius, wreck buoy, least depth, pollution line, CANCEL THIS MSG DTG or port closure.
- Keep 790/26 and unused 835/26 on their own Maslen Nos lines. Dedicated 790/26 remains two drifting containers at 42-19N 028-21E and 42-17N 028-24E, 1000 UTC 3 November, caution, not a numeric berth. Official English 835/26 remains unused as dedicated: 20-foot container at 42-05.165N 028-07.205E, 111345 UTC 11 November, drifting south, caution, no “maintain safe distance” line. Do not join 790, 834 and 835 into one cargo watch. A mine is not a box. Do not apply 834’s safe-distance sentence onto 790. Do not apply 835’s south set onto 834; 834 printed no drift vector.
- Do not invent a numeric berth, a fuze type or a Burgas closure. 834 prints “maintain safe distance,” not five cables, not one nautical mile, not two nautical miles. Dedicated 766/26 still owns the five-cable Khoryv figure. Dedicated 789/26 still owns Akademik’s one nautical mile through 30 November. Dedicated 1411/26 still owns Abeille Marengo’s two nautical miles. Official 003/26 remains wrap: compromised contact minefields on the Odesa / Ochakiv / Chornomorsk / Pivdennyi approaches, unused as a 834 naming. Do not promote a self-activating contact class, a nationality or an Odesa approach onto 42-16.90N. Do not treat Burgas, Sozopol, Ahtopol, Tsarevo, Primorsko, Varna or Constanta as closed.
- Hold Mentor, Contship, Khoryv, the Kaliakra MCM box and the Varna harbour windows on their own dedicated files. Dedicated 797/26 remains Mentor at 43-25.1N 028-37.0E — wrap, now off the live opening list, unused as a revival. Dedicated 768/26 remains Contship Jet sunk at 43-07.80N 028-45.36E. Dedicated 766/26 remains Khoryv east of Shabla. Wrap 810/26 remains the southwest-of-Kaliakra MCM exercise through 13 November, unused as dedicated. Dedicated 799/26 remains Varna port and road, 0800–1200 UTC 13 November still ahead. Dedicated 813/26 remains the 12 November Galata boarding box. Dedicated 815/26 remains the 10 November Kaliakra exercise, now past 101200 UTC. Do not fold those products into one 11 November mine shutdown because 834 printed a cape tag.
- Update the Black Sea passage pack against Thursday’s container-only Maslen Nos watch. Thursday’s dedicated 790/26 file correctly held two unlit boxes and refused a hull. Wednesday night’s board is a new object on a new plot. A file that still says Maslen Nos: two containers only is incomplete. A file that says Maslen Nos: mine, five cables, Burgas closed is over-read. Notify the CSO, P&I and Black Sea underwriter of 834/26, the 42-16.90N 028-13.48E plot, the 1335 UTC 11 November clock, the drifting-mine wording, and the unnumbered safe-distance line. Keep 790 open. Keep 835 unused as dedicated. Keep 003/26 as standing wrap. Report sightings; do not handle the object.
- Keep the rest of Wednesday night’s tape off this plot. Tonight’s companion IMO 134-count remains Tarif, IMO 9828390, 7 November, Strait of Hormuz, damaged, no pollution, 134 confirmed / 25 dead as at 11 November. This morning’s dedicated 202-26 remains the unnamed TBC Hormuz tanker. This morning’s dedicated 201-26 remains the unnamed Lima tanker Attack. This morning’s dedicated 436/26 remains CS MARAM off Pakistan. Dedicated 435/26 remains the second Fujairah SKATE 3D box through 20 November. Dedicated 1404/26 is now past 112200 UTC 11 November. Official English 835/26, 829/26, 828/26 and 820/26 remain unused as dedicated. Official Cyprus 345/26, NAVAREA III 0172/26, NAVAREA IX 433/26, official HNHS 1378/2026 (Pagasitikos / Milina flashing red unlit; official wording keeps PAGASHTIKOS, 04B and 05A) and official HNHS 1376/2026 (Aegaeo 14–15 November, 0.2 N.M, ten stations; title keeps SCIENTIEIC) remain unused as dedicated. UKMTO now ends at 202-26. No 203-26, no Update 113, no IMO 135, no ARN 169, no 437/26 and no official NAVWARN 836 this run. Watch a later NAVWARN that moves 42-16.90N 028-13.48E, adds a radius / wreck buoy / recovery / CANCEL DTG, names a hull against that plot, or splits the mine from 835 — not a 790 reprint and not a 003/26 conversion.
Regulas Shipping will keep lining Wednesday night’s NAVWARN 834/26 — drifting mine, 42-16.90N 028-13.48E, 1335 UTC 11 November, caution and a safe distance — against Thursday’s dedicated 790/26 container pair and against unused 835/26 so operators can treat the Maslen Nos mine as its own plot, not as a third box, a Mentor revival, a Kaliakra MCM conversion, or a Burgas closure.
