How do you spell Attack in Japanese?

If I were to literally write it in Katakana (Japanese form of writing for foreign Words), it would translate as, 'atakku'. There is no letter that would equal the syllable TACK. It would be written as TAKU or TAKKU, so that is how they pronounce it, too. Once you become familiar with their pronunciation, you would notice that their letter U would become somewhat silent in their speech.