While the era of the Titanic is long gone, it is technically possible for cruise ships to hit icebergs, though modern technology makes it extremely rare. Today's ships are equipped with advanced forward-looking sonar, high-definition radar, and thermal imaging that can detect even small "growlers" (car-sized chunks of ice) that are low in the water. Furthermore, ships sailing in polar regions (Antarctica or the Arctic) are built with ice-strengthened hulls and follow strict satellite-monitored routes provided by the International Ice Patrol. There have been minor incidents in the 21st century, such as the MS Explorer sinking in 2007 after hitting submerged ice (all passengers were rescued) and the Norwegian Sun grazing a small iceberg in Alaska in 2022. These modern "brushes" rarely result in major damage or injuries because ships travel at much slower, "ice-watch" speeds when navigating through berg-filled waters, allowing the crew to react long before a collision occurs.