Amateur Radio Activity for the International Sailing Community
State of play, on-air examples, and operational patterns observed across widely-used cruising nets and radio-email services.
1. Executive overview
Amateur radio remains an active, if narrower, layer of the international sailing communications stack in 2026. Its strongest presence is on HF (especially 20 meters and 40 meters) through long-running “cruising nets” that support position reporting, weather relays, and occasional third-party traffic for vessels under way. The most globally recognizable hub is 14.300 MHz, a long-established on-air focal point with overlapping net activity and an emergency communications “center of activity” role in amateur band planning.12
At the same time, the cruising community’s rapid adoption of satellite communications (including low-earth-orbit internet) has shifted routine “daily life” traffic away from HF voice, but it has not eliminated amateur radio’s value for one-to-many calling, redundancy, and community-based information exchange.34
2. What “activity” looks like today
In practical terms, most international sailing-related amateur radio activity falls into four buckets:
- HF voice nets (scheduled check-ins): roll-calls, position reports, relay of weather bulletins, and situational awareness.
- Emergency and “safety” monitoring: keeping watch on known centers of activity (notably 14.300 MHz) and providing relays when propagation allows.2
- Radio email / data services: Winlink for email, weather products, and bulletins when internet is unavailable, typically via soundcard modes (e.g., VARA HF).5
- Short message and position experiments: weak-signal keyboard messaging (JS8Call) and, in some regions, APRS-over-HF experiments using VARA HF.67
3. High-visibility nets and where sailors actually check in
The table below highlights nets and services frequently referenced by offshore and coastal sailors. Times and practices can shift (especially around daylight saving time), so treat this as a “current snapshot” and confirm on the relevant net’s schedule page before relying on it for passage planning.
| Net / Service | Band / Frequency | Typical schedule | What sailors use it for (typical) |
|---|---|---|---|
| Intercon (Intercontinental Amateur Traffic Net)2 | 20 m, 14.300 MHz (USB) | Daily 0700–1200 Eastern Time (ET)2 | Emergency watch / relays, third‑party traffic, goodwill traffic; encourages nearby stations to cooperate by moving a few kHz to reduce interference.2 |
| Maritime Mobile Service Network (MMSN)8 | 20 m, 14.300 MHz | Daily 1200–2200 ET (with a Saturday start-time note on schedule page)9 | Maritime mobile check-ins, weather bulletins, and relays for vessels and deployed personnel; long-running volunteer net (since 1968 per MMSN).8 |
| Pacific Seafarers Net10 | 20 m, 14.300 MHz | Daily 0300 UTC10 | Free daily check-in service for recreational vessels on ocean passages; position and status reports; propagation-dependent regional reach across the Pacific. |
| Waterway Net (WRCC)11 | 40 m, 7.268 MHz (LSB) | Daily net, typically starting 0745 ET11 | Coastal cruising support with weather and safety emphasis; float plans and position reports are part of the club culture described by WRCC resources.12 |
| Sonrisa Net (Sea of Cortez / Pacific Mexico)13 | 80 m, 3.968 MHz (LSB) | Daily (site lists 13:30Z)13 | Regional cruiser support and local conditions; widely referenced by Mexico‑area cruisers as a morning check-in and information exchange net. |
| Baja California Maritime Net (“Baja Net”)14 | 40 m, 7.233.5 kHz (LSB) | Daily 0800 Pacific Time (per site)14 | Regional weather and passage support along Baja and mainland Mexico; “after-net” rag chew is explicitly encouraged on the site. |
| South African Maritime Mobile Net (SAMMNet)19 | 20 m, 14.316 MHz (USB) 40 m, 7.120 MHz (LSB) |
Daily scheduled weather/net sessions (see published UTC times)19 | Coastal and high-seas weather bulletins and liaison for vessels along southern Africa and adjacent ocean areas; a well-documented example of regionally organized maritime mobile support. |
| Italian Amateur Radio Maritime Service (IARMS)20 | 20 m, 14.297 kHz (USB) | Daily at 19:00 UTC (per IARMS site)20 | Mediterranean-oriented maritime net providing weather forecasts to sailing vessels; volunteer-run per its own description. |
4. Examples of real-world amateur radio workflows on passage
Example A: Pacific ocean passage—daily position check-in (HF voice)
A vessel under way in the South Pacific checks into the Pacific Seafarers Net at the published time on 14.300 MHz and provides: (1) call sign with maritime mobile suffix as appropriate, (2) position (lat/long), (3) course/speed, (4) destination/ETA, and (5) any requests (e.g., relays, welfare traffic, or weather notes). The net positions itself as a free daily check-in service for recreational vessels on ocean passages.10
Practical note: 14.300 MHz can be busy because multiple nets and informal monitoring share the frequency; listen first, follow net control instructions, and avoid transmitting over active traffic.
Example B: Baja / Sea of Cortez—regional weather and local knowledge (HF voice)
A boat preparing to depart La Paz monitors and then checks into the Sonrisa Net (3.968 MHz LSB) for daily information exchange. The net’s own description emphasizes supporting cruisers in the Sea of Cortez and Pacific Mexico and meeting daily on the stated frequency and mode.13
When moving north along the peninsula, the same vessel may also check the Baja Net on 7.233.5 kHz, which publishes its daily opening time and frequency on its site.14
Example C: Coastal U.S. East Coast / ICW—daily safety net (HF voice)
A coastal cruiser transiting inshore waterways checks into the Waterway Net each morning on 7.268 MHz LSB at the published start time. The Waterway Radio & Cruising Club describes itself as an association of amateur operators interested in recreational boating, with net activity “every morning of the year.”15
Example D: Offshore radio email—low-bandwidth logistics and weather retrieval (HF data)
On a multi-week offshore leg without reliable internet, a licensed amateur operator uses Winlink to exchange short emails and retrieve weather products and bulletins. Winlink describes itself as a worldwide radio email system operated by volunteer amateurs, supporting email and also services such as position reporting and weather/information bulletins.5
Compliance note: Winlink explicitly warns that operating on its amateur-band network under a ship or marine radiotelephone license (instead of an amateur license) is illegal, and it points users toward obtaining an appropriate amateur license (e.g., General class in the U.S.).16
Example E: Rounding southern Africa—scheduled coastal bulletins (HF voice)
A yacht approaching the Cape region monitors the South African Maritime Mobile Net (SAMMNet) for scheduled weather bulletins and, when needed, makes contact during the published net windows. SAMMNet publishes its operational frequencies and daily times (UTC) and describes its purpose as serving maritime mobile stations.19
5. Digital modes: what is gaining traction
While classic HF voice nets remain the most visible “sailing community” activity, there is steady use of low-bandwidth digital tooling for messaging and situational awareness:
- Winlink + soundcard modems (e.g., VARA HF): Winlink distributes VARA products and supports them as widely-used third-party tools for HF data connections in the Winlink ecosystem.17
- JS8Call: JS8Call markets itself as open source weak-signal messaging with store-and-forward and relay features, aligning well with offshore constraints (low SNR, intermittent propagation).6
- APRS over VARA HF (experimental / regional): practitioners publish common “hangout” frequencies (e.g., 14.083.5 kHz and 7.083.5 kHz USB) for HF APRS using VARA HF, enabling low-rate position/status packets when conditions permit.7
6. Regulatory and operating realities for international sailors
For international sailing, the biggest operational constraint is not technology but regulatory compliance. The ARRL emphasizes that maritime mobile operation must respect ITU region frequency limitations while operating in international waters, and operators should not exceed regional allocations even if their home license allows it.18
Put differently: a frequency that is legal in one region may be out of band or differently segmented elsewhere. For longer passages (e.g., Atlantic or Mediterranean), this affects band-edge planning, which modes and segments to use, and how you set up memory channels.
Internationally, regional maritime mobile nets vary in continuity because they are volunteer-operated. For example, a UK-focused “Maritime Mobile Net” page explicitly frames current activity as a restart effort (seeking interest and volunteers), which is a useful reminder to treat historic net lists as leads rather than guarantees.21
7. Trend line: why amateur radio is still “alive” for cruisers (despite satcom)
Multiple cruising-oriented resources describe a clear shift toward satellite communications as coverage improves and cost per megabyte drops, with organizations and boaters migrating routine traffic to satellite services.3 However, sailing organizations continue to highlight the unique advantage of one-to-many communications via VHF and HF/SSB: a broadcast distress call can be heard by multiple vessels within range, rather than requiring you to know exactly whom to call first.4
In operational terms, that is why the “net culture” persists: it provides a standing, volunteer-operated mechanism for monitoring, relays, and group coordination that complements (rather than directly competes with) satellite messaging and internet.
8. Practical takeaways for 2026 passage planning
- Plan for nets as community infrastructure: identify 1–2 regional nets for your route (e.g., Sonrisa/Baja for Mexico, WRCC for U.S. coastal) and one global “watch” point (14.300 MHz) for monitoring when feasible.
- Keep your “radio email” footprint light: Winlink works best when you treat it as short, low-bandwidth messaging and file retrieval. If you need always-on internet workflows, that is a different architecture (satcom/LEO).
- Design for redundancy: cruising guidance increasingly assumes satcom is common, but the same guidance also stresses layered communications and the continued relevance of SSB-style systems for certain use cases.3
- Do the legal homework before you sail: confirm ITU region limits, licensing reciprocity, and the “business communications” restrictions that typically apply to amateur operation.
Footnotes (MLA)
- International Amateur Radio Union, Region 1. “Emergency Communications Frequencies.” IARU Region 1, n.d., https://www.iaru-r1.org/about-us/committees-and-working-groups/emcomm/emergency-communications-frequencies/. Accessed 9 Jan. 2026. Back to text
- Intercon. “The Intercon Net.” Intercon (Intercontinental Amateur Traffic Net), n.d., https://interconnet.us/. Accessed 9 Jan. 2026. See also “Schedule,” Intercon, n.d., https://interconnet.us/sched/. Accessed 9 Jan. 2026. Back to text
- Cruising Club of America. “Coastal and Offshore Communications Guide.” Dec. 2024, https://cruisingclub.org/sites/default/files/article_files/A%20-%202024%20CCA%20Communications%20Guide%20%28December%202024%29.pdf. Accessed 9 Jan. 2026. Back to text
- World Cruising Club. “Communications.” World Cruising Club, n.d., https://worldcruising.com/communications. Accessed 9 Jan. 2026. Back to text
- Winlink. “Winlink Global Radio Email.” Winlink, n.d., https://winlink.org/. Accessed 9 Jan. 2026. Back to text
- JS8Call. “JS8Call: A Weak Signal Keyboard-to-Keyboard Messaging System.” JS8Call, n.d., https://js8call.com/. Accessed 9 Jan. 2026. Back to text
- NOR, W5NOR. “Getting Started - APRS Over VARA HF.” w5nor.org, n.d., https://w5nor.org/aprsvara/. Accessed 9 Jan. 2026. Back to text
- Maritime Mobile Service Network. “The Maritime Mobile Service Network.” MMSN, n.d., https://www.mmsn.org/. Accessed 9 Jan. 2026. Back to text
- Maritime Mobile Service Network. “Schedule.” MMSN, n.d., https://www.mmsn.org/about-us/schedule.html. Accessed 9 Jan. 2026. Back to text
- Pacific Seafarers Net. “About.” Pacific Seafarers Net, n.d., https://pacseanet.blogspot.com/p/blog-page.html. Accessed 9 Jan. 2026. Back to text
- Boat Watch. “Resources.” Boat Watch, n.d., https://boatwatch.org/resources/. Accessed 9 Jan. 2026. See also Waterway Radio and Cruising Club. “Net Guide.” WaterwayRadio.net, n.d., https://www.waterwayradio.net/docs/WRCCNetGuide.pdf. Accessed 9 Jan. 2026. Back to text
- Waterway Radio and Cruising Club. “Club Info Page.” WaterwayRadio.net, n.d., https://www.waterwayradio.net/clubinfo.html. Accessed 9 Jan. 2026. Back to text
- Sonrisa Net. “Sonrisa Net: Home.” Sonrisa Net, n.d., https://sonrisanet.tonybishop.org/. Accessed 9 Jan. 2026. Back to text
- On The Baja Net. “On The Baja Net.” OnTheBajaNet.com, n.d., https://onthebajanet.com/. Accessed 9 Jan. 2026. Back to text
- Waterway Radio and Cruising Club. “Waterway Net Web Site.” WaterwayRadio.net, n.d., https://www.waterwayradio.net/. Accessed 9 Jan. 2026. Back to text
- Winlink. “Quick Start Links for Mariners (and Everyone).” Winlink, n.d., https://winlink.org/content/quick_start_links_mariners_and_everyone. Accessed 9 Jan. 2026. Back to text
- Winlink. “Winlink Global Radio Email” (notice on VARA product hosting). Winlink, n.d., https://winlink.org/tags/vara. Accessed 9 Jan. 2026. Back to text
- American Radio Relay League. “Maritime Mobile Operation in International Waters.” ARRL, n.d., https://www.arrl.org/maritime-mobile-operation-in-international-waters. Accessed 9 Jan. 2026. See also “Amateur Frequencies Outside the US,” ARRL, n.d., https://www.arrl.org/amateur-frequencies-outside-the-us. Accessed 9 Jan. 2026. Back to text
- South African Maritime Mobile Net (SAMMNet). “South African Maritime Mobile Net: Home.” SAMMNet, n.d., https://sites.google.com/view/southafricanmaritimemobilenet/home. Accessed 9 Jan. 2026. See also South African Radio League. “SA Maritime Mobile Net.” SARL, n.d., https://mysarl.org.za/sa-maritime-mobile-net/. Accessed 9 Jan. 2026. Back to text
- Italian Amateur Radio Maritime Service (IARMS). “Italian Amateur Radio Maritime Service.” qsl.net, n.d., https://www.qsl.net/ik6ijf/. Accessed 9 Jan. 2026. Back to text
- UK Maritime Mobile Net. “Useful Information.” UK Maritime Mobile Net, n.d., https://ukmaritimemobilenet.wordpress.com/about/. Accessed 9 Jan. 2026. Back to text
Notes on citations: “n.d.” indicates the page did not clearly display a publication date at the time of access. For operational use, always verify current schedules with the controlling organization.