Vanguard Class Submarine Royal Navy [Add-On] 1.0 The Vanguard class is a class of nuclear submarines built in the UK.This mod will add a Vanguard to the game with standard for GTA 5 characteristics and working torpedoes.Before using this mod, make sure you use alexguirre's CWeaponInfoBlob Limit Adjuster to prevent the game from crashing while loading.