Absolutely, as long as they're not within the same chain of command (i.e., the Chief isn't above the 2nd class in charge of her/him in the same command).
Many Chiefs are in fact married to petty officers junior to them.
Senior Chief Petty Officer followed by Master Chief Petty Officer.
The Navy (and Coast Guard) are different from other services. We have a Rate (similar to Rank in other branches) and a Rating (similar to MOS). Your Rate is your pay-grade, E-1 is a Seaman Recruit, E-6 is a Petty Officer 1st Class, etc... Your Rating is your job, ET is an Electronics Technician, and FT is a Fire Control Technician, for example. Specific to your question: there are two broad classes of Petty Officers, non-commisioned officers and senior non-commisioned officers. E-4 (Petty Officer 3rd Class), E-5 (2nd Class), and E-6 (1st Class) are non-commissioned officers and you can formally address them in three ways: # Simply as Petty Officer, # An abbreviated form of address such as PO3 (for 3rd Class) or PO1 (for 1st Class), # By combining the Petty Officers Rate and Rating into a single form of address; for example a Machinists Mate who is an Petty Officer 3rd Class could be addressed as MM3, or a Boatswains Mate who is a Petty Officer 1st Class could be addressed at BM1. If you know a Petty Officers last name, you can add it to the greeting as well, i.e., Petty Officer Smith, or MM3 Smith. Addressing a Chief Petty Officer is easier. A E-7 is a Chief Petty Officer, a E-8 is a Senior Chief Petty Officer, and a E-9 is a Master Chief Petty Officer. In practice you would refer to them as Chief, Senior Chief, and Master Chief, respectively. Like the more junior Petty Officers, you can combine a Chief's address with the last name, i.e. Chief Smith, or Master Chief Smith.
As per official US Navy documents, the answer is that no "first chief petty officer" exists. Nearly all personnel rated as petty officers first class since at least 1885 were automatically promoted to chief petty officer in 1893. These promotions occurred simultaneously, making the first chief petty officer impossible to determine.
From the official "Chief Petty Officer heritage" page from http://www.history.navy.mil/faqs/faq46-1.htm: "On April 1, 1893, two important steps were taken. First, the grade of Chief Petty Officer was established; secondly, most enlisted men received a pay raise. The question is often asked, "Who was the first Chief Petty Officer?" The answer is flatly: "There was no first Chief Petty Officer due to the fact that nearly all ratings carried as Petty Officers First Class from 1885 were automatically shifted to the Chief Petty Officer level." Exceptions were Schoolmasters, who stayed at first class; Ship's Writers, who stayed the same but expanded to include second and third class; and Carpenter's Mates, who had been carried as second class petty officers but were extended to include chief, first, second, and third classes. Therefore, the Chief Petty Officer grade on April 1, 1893, encompassed the nine rates shown in Table 2."
retired as a senior chief petty officer
The U.S. Navy has many different ranks. These ranks include Seaman Recruit, Seaman Apprentice, Seaman, Petty Officer 3rd Class, Petty Officer 2nd Class, Petty Officer 1st Class, Chief Petty Officer, Senior Chief Petty Officer, Master Chief Petty Officer, Fleet and Commander Master Chief Petty Officer, Chief Warrant Officer 2, Chief Warrant Officer 3, Chief Warrant Officer 4, Chief Warrant Officer 5, Ensign, Lieutenant Junior Grade, Lieutenant, Lieutenant Commander, Commander, Captain, Rear Admiral, Vice Admiral, Admiral Chief of Navy Ops, and Fleet Admiral.
There were many more military positions in Colonial times. The go from, Crewman Apprentice, Crewman, Specialist, Petty Officer Second Class, Petty Officer First Class, Chief Petty Officer, Master Chief Petty Officer, Warrant Officer, Ensign, Junior Lieutenant, Lieutenant, Captain, Major, Colonel, Commander, Rear Admiral, and Admiral.
Senior Chief Petty Officer followed by Master Chief Petty Officer.
Two levels, with the First Class out ranking the Third Class by two pay grades. A Third Class Petty Officer (PO) is an E4. Second Class PO is an E5 First Class PO is an E6. Chief PO is an E7 Senior Chief PO is an E8 and Master Chief PO is an E9.
In the US Navy, the ranks of "Seaman Recruit", "Seaman Apprentice" and "Seaman" are junior to the rank of Petty Officer 3rd Class. In increasing rank are Petty Officer 2nd Class, Petty Officer First Class and Chief Petty Officer. So, yes, any of the Petty Officer ranks are higher than any of the Seaman (or Airman or Fireman) ranks.
The Chief Petty Officer core competencies were developed to strengthen chief petty officer standards.
The Navy (and Coast Guard) are different from other services. We have a Rate (similar to Rank in other branches) and a Rating (similar to MOS). Your Rate is your pay-grade, E-1 is a Seaman Recruit, E-6 is a Petty Officer 1st Class, etc... Your Rating is your job, ET is an Electronics Technician, and FT is a Fire Control Technician, for example. Specific to your question: there are two broad classes of Petty Officers, non-commisioned officers and senior non-commisioned officers. E-4 (Petty Officer 3rd Class), E-5 (2nd Class), and E-6 (1st Class) are non-commissioned officers and you can formally address them in three ways: # Simply as Petty Officer, # An abbreviated form of address such as PO3 (for 3rd Class) or PO1 (for 1st Class), # By combining the Petty Officers Rate and Rating into a single form of address; for example a Machinists Mate who is an Petty Officer 3rd Class could be addressed as MM3, or a Boatswains Mate who is a Petty Officer 1st Class could be addressed at BM1. If you know a Petty Officers last name, you can add it to the greeting as well, i.e., Petty Officer Smith, or MM3 Smith. Addressing a Chief Petty Officer is easier. A E-7 is a Chief Petty Officer, a E-8 is a Senior Chief Petty Officer, and a E-9 is a Master Chief Petty Officer. In practice you would refer to them as Chief, Senior Chief, and Master Chief, respectively. Like the more junior Petty Officers, you can combine a Chief's address with the last name, i.e. Chief Smith, or Master Chief Smith.
Chief Robert Jones the hero of the navy....
As per official US Navy documents, the answer is that no "first chief petty officer" exists. Nearly all personnel rated as petty officers first class since at least 1885 were automatically promoted to chief petty officer in 1893. These promotions occurred simultaneously, making the first chief petty officer impossible to determine.
From the official "Chief Petty Officer heritage" page from http://www.history.navy.mil/faqs/faq46-1.htm: "On April 1, 1893, two important steps were taken. First, the grade of Chief Petty Officer was established; secondly, most enlisted men received a pay raise. The question is often asked, "Who was the first Chief Petty Officer?" The answer is flatly: "There was no first Chief Petty Officer due to the fact that nearly all ratings carried as Petty Officers First Class from 1885 were automatically shifted to the Chief Petty Officer level." Exceptions were Schoolmasters, who stayed at first class; Ship's Writers, who stayed the same but expanded to include second and third class; and Carpenter's Mates, who had been carried as second class petty officers but were extended to include chief, first, second, and third classes. Therefore, the Chief Petty Officer grade on April 1, 1893, encompassed the nine rates shown in Table 2."
Yes a HM3 is a third class petty officer. HM denotes that the person's rate (or job person is assigned) in this case it is a hospital corpsman. The Number following shows his pay grade. HM2 is a second class petty officer and HM1 first class petty officer. A third class petty officer is an E-4 which is the equivalent to a Marine Corporal which is also an E-4.
Enlisted ranks go fro E-1 to E-9 Warrant ranks from W-1 to W-4 Officer ranks from O-1to O-9 Enlisted are recruit, apprentice, seaman, petty officer 3rd class, 2nd class and 1st class, Chief Petty officer, Senior chief Petty Officer and Master chief Petty Officer. Officers start at Ensign, Lieutenant Junior grade, Lieutenant, Lieutenant Commander, Commander, Captain and the Admiralty ranks.