Just registered for this forum specifically to give a quick thanks to the OP for this thread. I found your post in a web search and just tracked my i3 from Bremerhaven to Port Hueneme, found photos of the ship traveling through Delfzijl, and was lucky enough timing-wise to catch it coming through the Miraflores Locks of the Panama Canal. (I too created a GIF as you did). How fun (and edifying) for both myself and my 7 year old. Thanks again!
Links of yours I used that are still working (and a couple new ones I found) are:
NY Times article on Ro-Ro carriers:
https://www.nytimes.com/2012/07/15/a...5500-cars.html
US Coast Guard Time-lapse of a ship going through the Panama Canal:
https://www.businessinsider.com/this...-lakes-2017-10
Ship Tracking:
https://www.marinetraffic.com/
Ship Photos:
http://www.shipspotting.com/
Web cam for Gatun Locks (Atlantic side of canal)
https://multimedia.panama-canal.com/Webcams/gatun.html
Web cam for Miraflores Locks (Pacific side of canal)
https://multimedia.panama-canal.com/...iraflores.html
And for kicks my car coming through the canal on the Grand Vega:
https://makeagif.com/gif/grand-vega-...a-canal-oeGUHu