Regulatory Digest / Week ending 19 May 2026
// SerenkAI Maritime — Intelligence Digest

Weekly Maritime Regulatory Digest

Week ending 19 May 2026  ·  Built for operational awareness
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Flag — Marshall Is.
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Med East
Ten unique Hellenic Navy Hydrographic Service notices this week: one cancellation (Navigation Warning 1572/2023 lifted), four lights unlit at Keramoti Point (Thrakiko Sea), Moni Esfigmenou (Strymonikos Gulf), Keratsini Bay outer mole head (Saronikos Gulf), and Kea Island (South Aegean), plus Mpali light unlit on the north coast of Crete. Active operational notices include submarine exercises in the Saronikos Gulf and Megara Gulf, subsea operations between Astipalaia Island and Amorgos Island (South Aegean), an extension of the Plateia firing practice area activation in the Saronikos Gulf, and a new activation of the Nisides Karavia firing practice area in the Myrtoo Sea. Nav warnings
Med NW
Nine French Maritime Prefecture orders this week: a comprehensive prohibition east of Porquerolles Island (Var) covering navigation, anchoring, diving, bathing, and fishing; revocation of a geophysical survey restriction off Fleury and Vendres (that area is now clear); a new anchoring prohibition zone in Calvi Bay (Corsica); five new 300-metre coastal strip orders for Sérignan (Hérault), Cagnes-sur-Mer (Alpes-Maritimes), Canet-en-Roussillon, Porto-Vecchio (Corsica), and Argelès-sur-Mer (Pyrénées-Orientales); and a temporary derogation permitting underwater archaeological operations off Cannes from 18 May to 5 June 2026. Local
Italy Tyrr.
Seven Italian Coast Guard ordinances in the Tyrrhenian this week: environmental monitoring survey works at the Nuova Diga di Genova breakwater project; festivity navigation restrictions off Livorno for Santa Giulia celebrations; Italian J24 and SB20 class sailing championship in the Gulf of Gaeta; an extension of La Maddalena Ordinance 035/2026; explosive ordnance disposal off La Maddalena Archipelago on 20 May; navigation and cable-laying restrictions for the Sa.Co.I.3 high-voltage direct current cable project off Elba Island; and seasonal bathing and port restrictions at Lido del Circeo. Local
Italy Adria.
Three Italian Coast Guard ordinances in the Adriatic this week: an extension of construction works at Marina Monfalcone (ex SO.DE.NA. area); an extension of navigation works at Porto Garibaldi (Loganovo); and an open water swimming event at Isole Tremiti. Local
Flag
Two Marshall Islands Registry publications this week: Yacht Safety Advisory 2026-02 on official record and log book requirements; and a revised Marine Notice (2-011-57, May 2026) setting out requirements for recreational fire appliances on board — covering fireplaces, fire pits, barbecues, LPG installations, and charcoal ovens, including carbon monoxide alarm obligations, LPG stowage rules, and MARPOL ash disposal requirements. Flag / Safety
⚑ For any navigation warning or local ordinance — confirm positions, time windows, and chart updates with the issuing authority before operations.
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Eastern Mediterranean

Navigation Warnings — Greece (Hellenic Navy Hydrographic Service)

Note: the same notices appear under two source labels in the data feed (Hellenic Navy Hydrographic Service and Greece HNHS NAVWARNs). Each entry below represents a single unique notice. One cancellation is included — this is operationally relevant as it confirms a previously active restriction is now lifted.
663/2026 — Activation of firing practice area Nisides Karavia, Myrtoo Sea (live firing)
The Nisides Karavia live firing practice area in the Myrtoo Sea has been activated this week. Vessels planning to transit or anchor in the Myrtoo Sea should confirm the current active time window and zone boundaries with the Hellenic Navy Hydrographic Service before departure.
662/2026 — Navigation light unlit, Keramoti Point, Thrakiko Sea
The navigation light at Keramoti Point in the Thrakiko Sea has been reported unlit. Vessels navigating in the northern Aegean approaches near the Kavala Gulf should update chart annotations and exercise caution on night approaches until the light is confirmed restored.
661/2026 — Submarine exercises, Saronikos Gulf and Megara Gulf
Submarine exercises are being conducted in the Saronikos Gulf and the adjacent Megara Gulf. Vessels navigating or anchoring in these areas — including approaches to Piraeus and the Saronic Islands — should be aware of submerged activity and confirm exercise zones and duration with the Hellenic Navy Hydrographic Service before operating in the vicinity.
660/2026 — Cancellation of Navigation Warning 1572/2023
Navigation Warning 1572/2023 has been formally cancelled by the Hellenic Navy Hydrographic Service. Vessels that had noted restrictions associated with that notice may now treat the area as clear — confirm with the Hellenic Navy Hydrographic Service if any uncertainty remains.
659/2026 — Subsea operations, Astipalaia Island and Amorgos Island area, South Aegean Sea
Subsea operations are being carried out in the South Aegean Sea in the area between Astipalaia Island and Amorgos Island. Vessels navigating or anchoring in the vicinity should maintain clear of the operations area and confirm precise location, extent, and duration with the Hellenic Navy Hydrographic Service before approaching.
658/2026 — Navigation light unlit, Moni Esfigmenou, Strymonikos Gulf, North Aegean Sea
The navigation light at Moni Esfigmenou in the Strymonikos Gulf, North Aegean Sea, has been reported unlit. Vessels navigating in the Strymonikos Gulf and approaches to the Athos Peninsula should update chart annotations and exercise caution at night until the light is confirmed restored.
657/2026 — Navigation light unlit, Keratsini Bay, Irakleous Harbour outer mole head, Saronikos Gulf
The navigation light on the outer mole head of Irakleous Harbour in Keratsini Bay, Saronikos Gulf, has been reported unlit. Vessels navigating the Saronikos Gulf and approaching the Keratsini area west of Piraeus should note this defect and exercise caution on night approaches.
656/2026 — Navigation light unlit, Kea Island, South Aegean Sea
A navigation light on Kea Island in the South Aegean Sea has been reported unlit. Vessels navigating the western Cyclades and approaching Kea should update chart annotations and exercise caution on night approaches until the light is confirmed restored.
654/2026 — Navigation light unlit, Mpali, north coast of Crete
The Mpali navigation light on the north coast of Crete has been reported unlit. Vessels approaching or navigating along the north Cretan coast should update chart annotations and exercise heightened caution on night approaches until the light is confirmed restored.
653/2026 — Extension of activation of firing practice area Plateia, Saronikos Gulf
The activation of the Plateia firing practice area in the Saronikos Gulf has been extended this week. Vessels navigating or anchoring in the Saronikos Gulf should confirm the current active time window and zone boundaries with the Hellenic Navy Hydrographic Service before operating in the vicinity.
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Northwestern Mediterranean

Navigation Restrictions — France (Maritime Prefectures)

⚠ These orders are issued by the French Maritime Prefecture for the Mediterranean. Links are to the official signed documents (PDF). Verify expiry dates with the issuing authority.
Order 2026-142 — Navigation, anchoring, diving, bathing, and fishing prohibition east of Porquerolles Island (Var)
A comprehensive prohibition covering navigation, anchoring, diving, bathing, and all forms of fishing has been established in the waters east of Porquerolles Island off the Var coast. Vessels approaching the Îles d'Hyères from the east or planning to anchor in this area must review the order for the precise restricted zone and duration before approaching.
Order 2026-131 — Revocation of Order 285/2025 — geophysical survey restrictions lifted off Fleury (Aude) and Vendres (Hérault)
Order 285/2025, which had restricted navigation, anchoring, diving, and fishing in the waters off Fleury and Vendres on the Languedoc coast during geophysical survey work for the future offshore wind farm connection route (Appel d'Offre 10), has been formally revoked. Vessels that had noted this restriction may now treat the area as clear.
Order 2026-137 — Anchoring prohibition zone established, Calvi Bay (Haute-Corse, Corsica)
A new permanent anchoring prohibition zone has been established in Calvi Bay on the northwest coast of Corsica. Vessels intending to anchor in Calvi Bay must review the order for the precise prohibited zone boundaries before anchoring — this is a standing restriction, not a temporary event order.
Order 2026-132 — 300-metre coastal strip regulations, Sérignan (Hérault)
New regulations governing navigation, anchoring, diving, and high-speed water sports within the 300-metre coastal strip off the commune of Sérignan on the Languedoc coast have been established. Vessels and tenders operating close inshore along this stretch of coastline should review the order for the full conditions applicable to their operations.
Order 2026-133 — 300-metre coastal strip regulations, Cagnes-sur-Mer (Alpes-Maritimes)
New regulations governing navigation, anchoring, diving, and high-speed water sports within the 300-metre coastal strip off Cagnes-sur-Mer on the Côte d'Azur have been established. Vessels and tenders operating close inshore between Nice and Antibes should review the order for the full conditions applicable to their operations in this area.
Order 2026-134 — 300-metre coastal strip regulations, Canet-en-Roussillon (Pyrénées-Orientales)
New regulations governing navigation, anchoring, diving, and high-speed water sports within the 300-metre coastal strip off Canet-en-Roussillon on the Roussillon coast near Perpignan have been established. Vessels and tenders operating close inshore in this area should review the order for the full conditions applicable to their operations.
Order 2026-135 — 300-metre coastal strip regulations, Porto-Vecchio (Corse-du-Sud, Corsica)
New regulations governing navigation, anchoring, diving, and high-speed water sports within the 300-metre coastal strip off Porto-Vecchio on the southern coast of Corsica have been established. Vessels and tenders operating close inshore in the Porto-Vecchio Gulf should review the order for the full conditions applicable to their operations.
Order 2026-136 — 300-metre coastal strip regulations, Argelès-sur-Mer (Pyrénées-Orientales)
New regulations governing navigation, anchoring, diving, and high-speed water sports within the 300-metre coastal strip off Argelès-sur-Mer on the Roussillon coast have been established. Vessels and tenders operating close inshore south of Perpignan should review the order for the full conditions applicable to their operations.
Order 2026-141 — Temporary derogation for underwater archaeological operation, Cannes (Alpes-Maritimes) — 18 May to 5 June 2026
A temporary derogation has been granted to existing coastal orders 318/2024 and 167/2024 to permit an underwater archaeological survey off the commune of Cannes from 18 May to 5 June 2026. Vessels and tenders operating in the coastal strip off Cannes Bay during this period should be aware of survey diving activity and review the order for the applicable zones.
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Tyrrhenian Sea

Italy — Coast Guard Ordinances (Tyrrhenian)

⚠ Italian Coast Guard ordinance links may become inactive once a temporary order expires. If a link is broken the notice has likely lapsed — confirm with the issuing harbour master's office if operational certainty is required.
Genova 81/2026 — Environmental monitoring and survey works, Nuova Diga di Genova breakwater project
Navigation, fishing, diving, and bathing restrictions apply in the waters off Genova in connection with environmental monitoring and survey work at the Nuova Diga di Genova new breakwater construction project. Vessels navigating in the approaches to Genova harbour should review the ordinance for the designated exclusion zone and timing before entering the area.
Livorno 67/2026 — Navigation restrictions, Santa Giulia festivities
Navigation restrictions have been established in the waters off Livorno in connection with the Santa Giulia religious festivities. Vessels navigating or anchoring near the Livorno coastline during the event period should maintain clear of the designated area and confirm timing with the Livorno harbour master's office.
Gaeta 30/2026 — Italian J24 and SB20 class national sailing championship, Gulf of Gaeta
The Italian national sailing championship for the J24 and SB20 classes has been authorised in the waters of the Gulf of Gaeta on the southern Lazio coast. Navigation restrictions apply within the race course area — vessels navigating in the Gulf of Gaeta should maintain clear of racing traffic and course marking buoys for the duration of the event.
La Maddalena 056/2026 — Extension of Ordinance 035/2026
The Italian Coast Guard harbour office at La Maddalena has extended the validity of Ordinance 035/2026, which governs fishing, diving, bathing, and navigation restrictions in the La Maddalena Archipelago area. Vessels operating in the waters around the La Maddalena Archipelago off northern Sardinia should confirm the current operational conditions with the La Maddalena harbour master's office.
La Maddalena 055/2026 — Explosive ordnance disposal, La Maddalena Archipelago — 20 May 2026
Explosive ordnance disposal operations involving the controlled destruction of recovered wartime munitions are scheduled to take place in the waters of the La Maddalena Archipelago on 20 May 2026. Vessels navigating or anchored in the La Maddalena Archipelago area on that date must maintain clear of the designated exclusion zone — review the ordinance for the precise location and time window before approaching.
Portoferraio 25/2026 — Sa.Co.I.3 high-voltage direct current cable project — navigation, diving, and fishing restrictions, Elba Island area
Navigation, diving, and fishing restrictions have been established in the waters off Elba Island in connection with the Sa.Co.I.3 project, which involves the installation of two new high-voltage direct current cable connections between the Italian mainland, Sardinia, and Corsica. Vessels navigating or anchoring in the waters around Elba Island should review the ordinance for the designated restricted zones and duration before operating in the area.
Terracina 41/2026 — Seasonal navigation, bathing, fishing, and port restrictions, Lido del Circeo
Seasonal restrictions governing navigation, bathing, fishing, and port access have been established for the Lido del Circeo area on the southern Lazio coast near the Circeo National Park. Vessels operating close inshore or planning to anchor along this stretch of coastline should review the ordinance for the applicable conditions before approaching.
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Adriatic Sea

Italy — Coast Guard Ordinances (Adriatic)

Monfalcone 18/2026 — Extension of quay reconstruction and water area occupation works, Marina Monfalcone (ex SO.DE.NA. area)
The Italian Coast Guard at Monfalcone has extended the navigation and maritime activity restrictions associated with the ongoing reconstruction of the quay and basin in the former SO.DE.NA. area at Marina Monfalcone at the head of the Adriatic. Vessels navigating or planning to berth at Marina Monfalcone should confirm the current extent of the works exclusion zone with the Monfalcone harbour master's office before approaching.
Porto Garibaldi 12/2026 — Extension of works ordinance, Loganovo
The Italian Coast Guard at Porto Garibaldi has extended the navigation restriction associated with ongoing works at Loganovo on the northern Adriatic coast south of the Po Delta. Vessels navigating in this area should confirm the current scope and duration of the restriction with the Porto Garibaldi harbour master's office before approaching.
Termoli 027/2026 — Italian Open Water Tour, Isole Tremiti — 2nd edition
An open water swimming event has been authorised in the waters of the Isole Tremiti archipelago in the central Adriatic. Navigation and bathing restrictions apply within the designated course area — vessels navigating or anchoring near the Tremiti Islands during the event should allow clear sea room for the course and confirm timing with the Termoli harbour master's office.
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Flag State

Marshall Islands Registry

Yacht Safety Advisory YSA-2026-02 — Official record and log book requirements
The Marshall Islands Registry has published Yacht Safety Advisory 2026-02 setting out the requirements for official records and log books that must be maintained on board Marshall Islands-registered yachts. Masters and vessel managers of Marshall Islands-flagged yachts should review the advisory to confirm their onboard record-keeping arrangements comply with current flag state requirements, particularly ahead of any upcoming port state control inspections or flag state surveys.
Marine Notice 2-011-57 (Rev. May 2026) — Recreational fire appliances on board yachts
The Marshall Islands Registry has issued a revised Marine Notice covering the design, installation, and operation of recreational fire appliances on board registered yachts — including solid-fuel fireplaces, ethanol fireplaces, liquefied petroleum gas installations, external fire pits, barbecues, spit roasts, and charcoal galley ovens. Key requirements include mandatory carbon monoxide alarms in all enclosed spaces containing a fire appliance, specific ventilation and exhaust duct standards, fire extinguisher placement, liquefied petroleum gas cylinder stowage rules, and the treatment of ashes as domestic waste under the International Convention for the Prevention of Pollution from Ships Annex V. The revised notice applies to all commercial, passenger, private limited charter, and trade yachts registered with the Marshall Islands, regardless of size, with full compliance required for vessels with a keel laid on or after 1 January 2021.