Worldwide seas, read by ship size.

Live wind & waves at every ship's operating area — worldwide, in American units — translated into what you'll actually feel on board. An 8-foot sea is a rough day on a small ship and a non-event on a mega ship. This tracker shows the difference.

● Fetching live weather… 338 ships • Worldwide tracker Positions: itinerary areas — not live AIS
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About positions: There is no free public live-AIS feed for the full fleet, so positions below are operating areas from published itineraries — live AIS positions require a paid feed. Weather at those coordinates is live from Open-Meteo. All heights are in feet, wind in knots, temperatures in Fahrenheit. Don't use this for navigation.
—Smooth sailing
—Noticeable motion
—Rough / at risk
—Highest waves now

🌅 Morning Wave Report — tomorrow's seas, in your inbox

Pick your ship, choose a morning time, and get one email each morning with the wave & weather outlook for the next day aboard that ship — no need to come back to the app. The report is tied to your ship's current sailing and stops on its own when the sailing ends. Nothing to cancel.

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Signup preview — please read: this page on its own cannot send email, so signups here are saved on this device only and no emails are sent or scheduled yet. In production, a small backend stores each signup and a scheduled sender delivers the report at the chosen ship time, then auto-deletes the signup after the sailing's last morning.

The report follows this one ship for its current sailing only.

One email each morning at this time, with tomorrow's outlook.

Published sailing dates for this ship aren't loaded yet, so confirm your last day aboard — your emails stop after that morning.

Pick your ship above and your sailing window will show here.
One email each morning at 7:00 AM ship time.

Use the search at the top of the page to find a ship by name, line, homeport, port or region — it works together with these filters. Pick a ship name to narrow to one ship, center it on the world map, and open it for today's verdict plus tomorrow's forecast where she'll be.

Smooth Noticeable Rough — itinerary at risk Severe — expect changes Small <30k GT • Medium 30–70k • Large 70–140k • Mega >140k GT • Waves in feet • Wind in knots
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🗺️ World map — one marker per shipDrag to pan • Tap a dot for the verdict
Built-in open map — no tiles, works offline
0°120°W60°W60°E120°E 60°N30°N0°30°S ALASKA CARIBBEAN MEX. RIVIERA HAWAII MEDITERRANEAN N. EUROPE MIDDLE EAST ASIA AUSTRALIA / NZ AFRICA SOUTH PACIFIC SOUTH AMERICA ATLANTIC INDIAN OCEAN PACIFIC N ↑
Built-in simplified world coastline — drawn inside this page, no external map tiles or libraries, so it loads on ship Wi-Fi and offline. Zoom in on a region: ships sharing an area are fanned out so every dot is tappable. Color = live impact for that ship's size in the same weather. Use the region filter above to jump between the regions in the fleet — Caribbean, South America, Mediterranean, Asia, Africa, Australia / New Zealand, Mexican Riviera, Northern Europe, Hawaii, the Middle East, the South Pacific, US West Coast, world cruises and transatlantic repositioning crossings. Ships in dry dock are marked as not in service.
338 of 338 ships

How the impact model works

Same sea, different ship. Thresholds are in feet of significant wave height for when motion becomes notable / rough, plus the wind (knots) where docking and port maneuvering get difficult.

Size classGross tonnageMotion notableRoughDocking wind concernNotes
Small< 30,000 GT4.1 ft6.6 ft25 ktTenders at risk above 3.3 ft; feels every swell
Medium30,000–70,0006.6 ft9.8 ft30 ktClassic mid-size ride; stabilizers help to about 8.2 ft
Large70,000–140,0008.2 ft12.3 ft35 ktHigh windage — gusts matter in port even when seas feel fine
Mega> 140,000 GT9.8 ft14.8 ft40 ktMass + stabilizers shrug off most seas worldwide; windage is the limit

Data sources — read this: Weather is live in your browser from Open-Meteo — Marine API (wave height, wave period, swell) + Forecast API (wind, gusts, pressure & 24h trend) at each operating-area coordinate, fetched on load. If a fetch fails a ship is marked “weather unavailable” — nothing is invented. Ship registry & operating areas are from published deployments worldwide. The fleet shown is the published worldwide fleet for the 41 cruise lines covered — 338 ships on their November 2026 deployments, including 11 ships in dry dock / laid up and shown as not in service; smaller regional and charter operators outside that list are not yet covered. Ship facts (gross tonnage, size class, homeport) are the published figures from that fleet data; ship length was not in the source data and is not shown rather than guessed. Tomorrow forecasts use the same Open-Meteo forecast and marine APIs at the coordinates of tomorrow's location. This is an informational tool, not a navigation aid — captains have full AIS, radar and fleet weather routing that this page does not.