An Official U.S. Navy mobile application, produced by the Navy PMW 240 Program. Navy COOL offers major elements of the U.S. Navy’s Credentialing Opportunities On-Line (COOL) website in a convenient app. The app is essentially a toolbox – or COOLbox – that provides Sailors and others with a set of credentialing and career tools to help them make informed professional development decisions throughout their Navy career and beyond. Navy COOL tools provide information for making enlistment decisions