| Coast Guard Ranks are broken down by enlisted and officer. Enlisted Ranks | E-1 | Seaman Recruit | | E-2 | Seaman Apprentice | | E-3 | Seaman | | E-4 | Petty Officer Third Class | | E-5 | Petty Officer Second Class | | E-6 | Petty Officer First Class | | E-7 | Chief Petty Officer | | E-8 | Senior Chief Petty Officer | | E-9 | Master Chief Petty Officer | Warrant Officer Ranks | W-2 | Chief Warrant Officer 2 | | W-3 | Chief Warrant Officer 3 | | W-4 | Chief Warrant Officer 4 | Officer Ranks | O-1 | Ensign | | O-2 | Lieutenant Junior Grade | | O-3 | Lieutenant | | O-4 | Lieutenant Commander | | O-5 | Commander | | O-6 | Captain | | O-7 | Rear Admiral (lower half) | | O-8 | Rear Admiral (upper half) | | O-9 | Vice Admiral | | O-10 | Admiral | |