--- title: "The port that sees the approach | Nexus Observatory" description: "A port observes three things at once: the ships coming in, the sea they come through and the cranes that receive them. Ship identity travels on a radio…" url: https://observatory.global/stories/coast-port/ publisher: Nexus Observatory Inc. updated: 2026-10-31 --- [Stories](https://observatory.global/stories/)Place: Coast and port # The port that sees the approach A port observes three things at once: the ships coming in, the sea they come through and the cranes that receive them. Ship identity travels on a radio standard every seagoing vessel carries1; the rest is radar, buoys and the edge on the quay. **Systems**: AIS and coastal radar, Met-ocean buoys, Quay-side edge **Toward 2030**: VHF data exchange, The S-100 family of charts **Figures**: 4, field scene, simulator, systems diagram, timeline to 2030 Go to the references **01** Field scene ## Radar, buoy, cranes and a private network. Coastal radar and identity broadcasts watch the approach; a moored buoy reports wind, waves and current at the entrance; cranes and vehicles on the quay run on a private network whose edge closes the control loop next to them. Each source keeps its own clock and its own format. The work of the port’s edge is to put them on one time base and one chart. Figure as text: A port with coastal radar, a met-ocean buoy, cranes and an edge node A wireframe port: quay buildings, two ship-to-shore cranes, a vessel alongside, a coastal radar, a met-ocean buoy offshore, a private 5G site and an edge node, linked by dashed red lines. - Coastal radar - Met-ocean buoy - Crane - Private 5G - Edge **02** Simulator ## Where the radar loses the ship. A radar at 30 m sees a vessel’s superstructure until the curvature of the Earth hides it. The standard propagation assumption, an effective Earth radius of four thirds, gives the distance2. Raise the antenna, or the target, and see how the range changes. Figure as text: Radar horizon over the sea An elevation drawing over the curved sea surface with a radar mast on the left, a ship’s mast on the right and the red line of sight between their tops. | Mast height | 30 m | | --- | --- | | Receiver height | 20 m | | Radio horizon (4/3 Earth) | 41.0 km | | Geometric line of sight | 35.5 km | | Area within the radio horizon | 5,279 km² | **03** Systems diagram ## One picture of the approach. Identity broadcasts give each ship’s name and position; radar confirms what is really there, including vessels that do not broadcast; the buoy sets the sea state for the pilots. At the edge they are fused into one traffic picture and served to the vessel traffic service and the terminal. Figure as text: Sensor fusion for the vessel traffic picture A four-tier diagram: AIS, radar and the buoy, the private network, the quay-side edge, and the traffic service and terminal operations. - **Sensors** : AIS receiver, Radar, Buoy, Crane telemetry - **Network** : Private 5G, Fibre - **Edge** : Quay edge - **Users** : Traffic service, Terminal 9 links. Scenarios: Normal operation; Fibre cut. **04** Timeline to 2030 ## The next generation of maritime data. The VHF data exchange system adds a data channel and a satellite segment beside the identity broadcast3; the S-100 framework replaces the paper-era chart model with data products that can carry real-time layers4. Both belong to the e-navigation plan of the International Maritime Organization5. Figure as text: Maritime data standards toward 2030 A timeline from 2014 to 2030 with the AIS technical recommendation, the e-navigation plan, the VHF data exchange system and S-100 edition 5. 1. **2014-02** AIS technical characteristics, revision 5 (ITU-R M.1371-5). The current revision of the identity broadcast that seagoing ships carry. 1 2. **2014-11** e-Navigation implementation plan. Harmonised collection, exchange and presentation of maritime information. 5 3. **2022-02** VHF data exchange system (ITU-R M.2092-1). Data channels and a satellite component beside AIS. 3 4. **2022-12** S-100 edition 5 (IHO S-100). The universal hydrographic data model behind the next charts. 4 Figure 1 Field scene Figure 1. A port with coastal radar, a met-ocean buoy, cranes and an edge node. A wireframe port: quay buildings, two ship-to-shore cranes, a vessel alongside, a coastal radar, a met-ocean buoy offshore, a private 5G site and an edge node, linked by dashed red lines. ## References 1. [Recommendation ITU-R M.1371-5: Technical characteristics for an automatic identification system using time division multiple access in the VHF maritime mobile frequency band](https://www.itu.int/rec/R-REC-M.1371/en) . International Telecommunication Union, Radiocommunication Sector, 2014. 2. [Recommendation ITU-R P.453: The radio refractive index (effective Earth radius factor k = 4/3)](https://www.itu.int/rec/R-REC-P.453/en) . International Telecommunication Union, Radiocommunication Sector, 2019. 3. [Recommendation ITU-R M.2092-1: Technical characteristics for a VHF data exchange system in the VHF maritime mobile band](https://www.itu.int/rec/R-REC-M.2092/en) . International Telecommunication Union, Radiocommunication Sector, 2022. 4. [S-100: Universal Hydrographic Data Model, Edition 5.0.0](https://iho.int/en/s-100-universal-hydrographic-data-model) . International Hydrographic Organization, 2022. 5. [e-Navigation Strategy Implementation Plan (MSC.1/Circ.1595 and updates)](https://www.imo.org/en/OurWork/Safety/Pages/eNavigation.aspx) . International Maritime Organization, 2014. ## Related stories [Place: Ocean **The ocean below the surface** Most of the ocean’s heat lies below what satellites can see. Profiling floats drifting at depth and surfacing to report have measured it routinely since the…](https://observatory.global/stories/ocean/) [System: Private 5G and AI-RAN **Private 5G with the inference in the radio** A private cellular network gives a site its own coverage, its own security and its own priorities. AI-RAN adds a second idea: the accelerators that run the…](https://observatory.global/stories/private-5g-ai-ran/) [System: Federation across agencies **Many agencies, one picture** No single agency observes everything it needs. Federation lets each keep its own systems and still share: common interfaces, common catalogues and common…](https://observatory.global/stories/federation/) ## Where this applies [Connectivity](https://observatory.global/connectivity/)[Edge compute & AI](https://observatory.global/edge-ai/)[Sensors & instruments](https://observatory.global/sensors/)[Data & licensing](https://observatory.global/data-products/)[Transport](https://observatory.global/industries/transport/)[Oceans](https://observatory.global/industries/oceans/)[Industry](https://observatory.global/industries/industry/)[Field tour: coastal port](https://observatory.global/environments/coastal-port/) © 2026 Nexus Observatory Inc. **Legal** [Privacy notice](https://observatory.global/legal/privacy/) · [Terms of use](https://observatory.global/legal/terms/) · [Cookie policy](https://observatory.global/legal/cookies/) · [Accessibility](https://observatory.global/legal/accessibility/) · [Official languages](https://observatory.global/official-languages/) · [Notices](https://observatory.global/notices/) **Company** [About](https://observatory.global/about/) · [Open governance](https://observatory.global/consortium/) · [Contact](https://observatory.global/contact/)