How many gold coins should be prepared for Normandy peak battleships and quartermaster ships?

The quartermaster of the peak battleship Normandy needs to prepare 2000 gold coins. According to relevant data, drawing a munitions warship requires 2000 gold coins, but six things will be given randomly, and each of these six things has a probability of 1%. The first time, there were 15 rounds of bullets, and after that, it was basically about 20 rounds.