The Cornish beaches where Lego keeps washing up
> No-one knows exactly what happened next, or even what was in the other 61 containers,WHAT?I imagined every container to have tracking and identification numbers so the owners could know roughly where it is at all times; and so that various government agencies could prevent import of things not allowed in their countries.  A quote a bit later on kind of supports that.> She says the ship's manifest - a detailed list of everything in the containers - shows a whole range of Lego items, not all sea-themed. After all this time "it's the same old things that keep coming in with the tide", particularly after a bad storm.I'm surprised about how many containers are lost.> About 120m containers carried on world's oceans in 2013> 2011 survey by World Shipping Council estimated an average of 675 containers lost at sea each year between 2008-10> 2014 survey says average annual loss between 2011-13 was approximately 2,683 containers2,500 containers out of 120m is a small number, but still.  How would you design a pinger suitable for shipping containers so that they could be located after being dropped overboard?EDIT I should have said that this pinger thing is just a thought experiment.  Obviously most containers are no lost, and most of the ones that are are not toxic / valuable enough to bother with.  (But thanks to the posters below)