Urgent Notices to Mariners in Force in Metropolitan French Waters

At sea, events may disrupt navigation safely: wreckage, lost buoy, broken lighthouse, military fire etc. The IMO (International Maritime Organisation) and the International Hydrographic Organisation (IHO) require the signatory states of the SOLAS Convention (Safety of Life at Sea) to identify and disseminate potential hazards to navigation in the waters under their responsibilities. This information is called navigational warnings in international conventions and “urgent notices to navigators” (abbreviated in AVURNAV) in France. The diffusion of these AVURNAVs in France is ensured at sea by VHF, in particular by semaphores, after calling on channel 16 or on the frequency 2 182 kHz, NAVTEX or Inmarsat. These opinions can also be consulted in the harbour masters and on the sites of the maritime prefects. This dataset lists: — an API to access these current AVURNAVs in real time; — a history of the AVURNAVs that have been issued.在海域范围内，存在诸多可能危及航行安全的事件，包括船舶残骸、遗失航标、灯塔损毁、军事开火等。国际海事组织（International Maritime Organisation, IMO）与国际海道测量组织（International Hydrographic Organisation, IHO）要求《海上人命安全公约》（Safety of Life at Sea, SOLAS）的缔约国，识别并通报其责任水域内的航行潜在危险。此类信息在国际公约中被称为航行警告，而在法国则被称为"航海者紧急通告"（缩写为AVURNAV）。 在法国，上述AVURNAV通告的海上传播依托甚高频（Very High Frequency, VHF）实现：通常先在16频道或2182kHz频率发起呼叫，随后通过信号旗完成通报；此外也可通过NAVTEX航警系统及国际海事卫星组织（Inmarsat）系统进行传播。相关通告也可向港务长咨询，或通过法国海事省长公署的官方网站获取。 本数据集包含以下内容： —— 用于实时访问当前AVURNAV通告的应用程序接口（Application Programming Interface, API）； —— 已发布的AVURNAV通告历史记录。