https://api.windy.com/

https://api.windy.com/point-forecast

All those maps are based on Windy API: https://api.windy.com/map-forecast
There are some official examples also available.

My site is tracker.ee, you can copy-paste some code if you want, just don't make visually identical clone :)

Multiple boats (race ended, so no active movements):
https://gis.ee/sh/

Single boat:
https://gis.ee/leaucommotion/

Probably most difficult part is getting data from boat.
For L'Eau Commotion Iridium Go was used.
Iridium Go has automatic reporting service via e-mail.
Server can fetch those e-mail reports and make it usable for Leaflet map (Windy API).

@jakubvrana
maybe this one works: store.get('timestamp')

https://community.windy.com/topic/9297/be-aware-russian-windy-app-uses-our-name-and-want-you-to-pay-for-nothing

@theskyhunter You can use past weather reports.

@scottyrtobin you can try sounding feature.
Right click or long touch on map

Local Time: 11:57

At startup without timeline change 12.00 / 09.00Z (Incorrect +3)

Right arrow to move timeline: 14.00 / 12.00Z (Correct +2)

https://www.windy.com/-Add-new-webcam/webcams/add