Unchartered waters

Before the era of aviation, explorers and traders travelled the world by sea. They were aided by charts -- in other words, maps. Hence, regions for which charts were not available were uncharted waters. Uncharted waters and uncharted territory are used metaphorically these days to refer to new, unprecedented situations.

However, many people mistakenly write unchartered instead. Unchartered means not having a charter or written constitution. Take a look at the examples below:

Colombia in Unchartered Territory With Peace Deal's Defeat https://t.co/f5ByDOxden

— Llamma Lane (@llammalane) 3 de octubre de 2016

We are living in unchartered waters in #politics, says Miliband #tfwa #TFWA2016

— DFNI Magazine (@DFNI) 3 de octubre de 2016

At the New York HIT Summit, Diving into Unchartered Cybersecurity Waters | Healthcare Informatics Magazine https://t.co/utylXgreLs

— Luis Saldana (@lsaldanamd) 28 de septiembre de 2016