Signal code: SIG-NO-008-H
Position: Coast / Lofoten / Svalbard
Date: 2026-05-26
08
Signal 08 of 08 · Maritime
ActiveSMSEmailPush

Sea warnings and coastal signals: Kystverket, lighthouses and navigation status

Norway has 100,000+ km of coastline (including fjords and islands). Kystverket and the Meteorological Institute issue continuous sea warnings. 4notify integrates these for fisheries (>5,500 fishing vessels), freight ships and pleasure craft with satellite fallback for open seas.

Context

A missed weather warning can mean loss of vessel and crew. Traditional VHF broadcasts don't reach all small vessels without dedicated radio operator.

Legal framework
Skipssikkerhetsloven § 7

Mandatory receipt of public sea warning.

SOLAS Kapittel V — Sikkerhet til sjøs

International framework for weather and navigation warning.

Steps
01

Kystverket API webhook

Kystverket issues events for navtex, VHF warnings, lighthouse status.

02

Geographic filtering per zone

Vessels subscribe to sea zones relevant to their route.

03

Satellite fallback

Inmarsat / Iridium routing for vessels out of mobile coverage.

Code
json
{ "template": "sea_warning_storm", "channels": ["sms", "push"], "vessel": { "imo": "9876543", "name": "FV Helene Marie", "phone_master": "+4790123456" }, "warning": { "zone": "Lofoten_West", "type": "storm_force_10", "valid_until": "2026-05-27T18:00:00+02:00" } }
Sample message
SMS

Kystverket: STORM FORCE 10 Lofoten West, valid until 27/05 18:00. Seek port immediately. NRK P1 for updates.

Checklist
  • Kystverket API access
  • Geographic zone subscriptions
  • Inmarsat / Iridium fallback active
What 4notify does differently

Only Norwegian notify service with Kystverket API integration + satellite fallback for open seas.

FAQ
Does this replace VHF radio?

No — VHF still required for commercial vessels. 4notify supplements as additional notification layer.

Start free

14 days, no card. Support in Norwegian and English.

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