I'd wager my stash of Semois and Margate that does not taste or smell like Margate that the term "navy flake" was invented by some chap in the Sales Department and that there is nothing nautical in its origin. A navy flake is simply what a manufacture chooses to call a navy flake; nothing more and nothing less. Having said that, my favorites are PS LNF and Newminster #400 SNF.