→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 →How "Dick" came to be short for 'Richard': https://youtu.be/BH1NAwwKtcg?list=PLR0XuDegDqP2Acy6g9Ta7hzC0Rr3RDS6q Never run out of things to say at the water cooler with TodayIFoundOut! Brand new videos 7 days a week! More from TodayIFoundOut When Does a Speed Limit Come Into Effect https://youtu.be/tRy8fjND8Qk?list=PLR0XuDegDqP0GESJ0DgpgTcThLJVEbFs8 The Blind Man Who Invented Cruise Control https://youtu.be/p4COtdepj-k?list=PLR0XuDegDqP33-NUx7wuKb-3PDj-gRKgR In this video: How fast you’re going while out floating on the big blue can be notoriously tricky to judge if you’re just eyeballing it. One method used to get around this issue was introduced in the sixteenth century using a “chip log” or “log-line.” Want the text version?: http://www.todayifoundout.com/index.php/2014/03/speed-seafaring-vessels-measured-knots/ Sources: