Seaman Recruit must have played 0-4 games Ensign must achieve 81-100% on officer ladder Seaman Apperntice must have played 5-14 games Lieutenant Junior Grade must achieve 66-80% on officer ladder Seaman must have played 15-24 games Lieutenant must achieve 51-65% on officer ladder Petty Officer Third Class must have played 25-39 games lieutenant Commander must achieve 41-50% on officer ladder Petty Officer Second Class must have played 40-54 games Commander must achieve 31-40% on officer ladder Petty Officer First Class must have played 55-74 games Captain must achieve 21-30% on officer ladder Chif Petty Officer must have played 75-100 games or 50 wins Rear Admiral Lower Half must achieve 11-20% on officer ladder   Rear Admiral Upper Half must achieve 6-10% on officer ladder   Vice Admiral must achieve 2-5% on officer ladder   Admiral must achieve 0-1% on officer ladder   Fleet Admiral must achieve top 10 on officer ladder