This ebook is intended for the subway commute, those few minutes between classes, or a serious study session. Lugging flash cards can be a real hassle, so my hope is that these electronic cards will make learning the International Maritime Signal Flag more enjoyable. For reference, this ebook contains a list of the flags found on the flash cards with the letters they signify. Note that the flags are listed first on the flash cards then the letters. If you wish to study a set from the letters to the flags, jump to the end and proceed backwards through the set, beginning with the letter and flipping to the corresponding flag. This ebook could prove more useful when viewed on a colored display.