SHOM — Service hydrographique et océanographique de la Marine
Recorded as: SHOM
France's hydrographic service and the coordinator of NAVAREA II; its in-force list is collected directly through PING.
National warning services and NAVAREA coordinators collect reports of dangers in their waters — from hydrographic surveys, navies, ports and ships — and broadcast them as numbered navigational warnings, some ocean-wide and some coastal.
What the archive holds
38 messages in this archive record SHOM as their authority, issued from 2010-07-07 to 2026-09-22. 7 of them are in force in the latest lists we collected.
Exercises accounts for 17 of 38 recorded messages (45%), the largest warning type group in this selection.
Attributed to NAVAREAs, they fall mostly in NAVAREA II (35) and NAVAREA IV (3).
Located messages lie in 4 sea areas, most often North Atlantic Ocean, Gulf of Guinea and South Atlantic Ocean.
They reached this archive through NAVAREA II (35) and NAVAREA IV (3).
Messages by year of issue
By month of issue, all years
Warning types
Where
NAVAREA II 35 · NAVAREA IV 3
Newest in force · 7
- NAVAREA II 329/26 · Other · South Atlantic Ocean2026-09-15 · in forceOperation on cable
- NAVAREA II 316/26 · Surveys · Gulf of Guinea2026-09-04 · in forceLast known positions of mobile oil rigs and drill ships at 040430 UTC sep 26
- NAVAREA II 298/26 · Wrecks · North Atlantic Ocean2026-08-07 · in forceNewly discovered dangers
- NAVAREA II 297/26 · Other2026-08-07 · in forceHf service - mf service mf/hf dsc/voice entire azores archipelago is not operational
- NAVAREA II 269/26 · Cable ops · South Atlantic Ocean2026-07-02 · in forceSpecial operations
- NAVAREA II 257/26 · Nav aids · Gulf of Guinea2026-06-20 · in forceAids to navigation
In force the longest
Most recently issued
- NAVAREA II 338/26 · Exercises · North Atlantic Ocean2026-09-22Special operations
- NAVAREA II 337/26 · Nav aids · North Atlantic Ocean2026-09-21Aids to navigation
- NAVAREA II 335/26 · Towing · Celtic Sea2026-09-20Towing operations
- NAVAREA II 334/26 · Exercises · North Atlantic Ocean2026-09-19Special operations
- NAVAREA II 333/26 · Derelicts · North Atlantic Ocean2026-09-18Derelict vessel adrift
- NAVAREA II 332/26 · Towing · North Atlantic Ocean2026-09-16Towing operations
- NAVAREA II 331/26 · Exercises · North Atlantic Ocean2026-09-16Special operations
- NAVAREA II 330/26 · Exercises · North Atlantic Ocean2026-09-15Special operations
Earliest in the archive
Other national warning services in NAVAREA II
- WZ16,018
Counts are messages recording this issuer as their authority, recounted 2026-09-24; see coverage for what is collected. Not for navigation.