There are no jet pack code for gta vice city

To get all the guns? Thats easy just log on your computer and search foe the cheat codes for the game and BAM! The cheats are right there. WWW.GAMESRADAR.COM  

First you will have to put in a cheat code in to learn how to swim, 2nd you can download a kit from download.com to make your person know how to swin,3rd of all. If them 2 odjectives don't work then there is no way your person can learn how to swim