Podcast:99% Invisible Published On: Thu Aug 04 2011 Description: If you look at the outer hull of commercial ships, you might find a painted circle bisected with a long horizontal line. This marking is called the load line, or as I prefer, the Plimsoll line. This simple graphic design … Continue reading → Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.