![The world’s most challenging cruise ship routes The world’s most challenging cruise ship routes](https://cdn.cnn.com/cnnnext/dam/assets/220429011029-09-challenging-cruise-ship-routes-super-tease.jpg)
The world’s most challenging cruise ship routes
Editor’s Note — Monthly Ticket is a new CNN Travel series that spotlights some of the most fascinating topics in the travel world. In April, we’re setting course for the diverse world of cruises. Whether you’re looking for travel inspiration or insider knowledge, Monthly Ticket will take you there. (CNN) — Navigating a colossal ship…