The United States Coast Guard (USCG) is a unique branch of the military that operates under the Department of Homeland Security during peacetime and can be transferred to the Department of the Navy during wartime. With a wide range of responsibilities, including maritime law enforcement, search and rescue, marine safety, and environmental protection, the Coast Guard requires a diverse workforce with various skills and specialties. The Coast Guard's Military Occupational Specialty (MOS) list reflects this diversity, offering numerous career paths for its members. Here, we'll delve into the Coast Guard's MOS list, exploring the different categories and some of the specialties within each.
Understanding Coast Guard Ratings

The Coast Guard uses a system of ratings, similar to the Navy’s system, to categorize its enlisted personnel into different occupational specialties. These ratings are divided into several broad categories, each representing a distinct area of expertise. Understanding these categories and the specific ratings within them is essential for anyone considering a career in the Coast Guard or looking to advance within the service.
Deck and Ordinance Ratings
These ratings involve work on the deck of a ship or with ordnance. They include Boatswain’s Mate (BM), Gunner’s Mate (GM), and Operations Specialist (OS), among others. For example, a Boatswain’s Mate is responsible for deck maintenance, including painting, upkeep of the ship’s hull, and management of the deck crew, while a Gunner’s Mate is involved in the maintenance and operation of weapons systems.
Rating | Description |
---|---|
BM - Boatswain's Mate | Deck maintenance and management |
GM - Gunner's Mate | Maintenance and operation of weapons systems |
OS - Operations Specialist | Plotting courses and maintaining navigational equipment |

Engineering and Hull Ratings

This category encompasses ratings related to the mechanical operation of ships, including propulsion systems, electrical systems, and hull maintenance. Ratings such as Machinist’s Mate (MK), Electrician’s Mate (EM), and Damage Controlman (DC) are vital for ensuring the Coast Guard’s fleet remains operational and seaworthy. For instance, a Machinist’s Mate is responsible for the maintenance and repair of mechanical systems, while an Electrician’s Mate focuses on electrical systems, including generation, distribution, and utilization of electrical power.
Aviation Ratings
For those interested in aviation, the Coast Guard offers several ratings, including Aviation Maintenance Technician (AMT), Aviation Survival Technician (AST), and Aviation Electrician’s Mate (AEM). These ratings involve the maintenance, repair, and operation of aircraft systems, ensuring the Coast Guard’s air assets are always ready for missions ranging from search and rescue to maritime patrol.
Key Points
- The Coast Guard's MOS list is divided into several categories, each representing a different area of expertise.
- Ratings such as Boatswain's Mate and Gunner's Mate are critical for deck and ordnance operations.
- Engineering and Hull ratings, including Machinist's Mate and Electrician's Mate, are essential for the mechanical operation of ships.
- Aviation ratings like Aviation Maintenance Technician and Aviation Survival Technician play a crucial role in maintaining and operating the Coast Guard's aircraft.
- Understanding the different ratings and their responsibilities is key for career advancement and contribution to the Coast Guard's mission.
The Coast Guard's diverse mission set requires a workforce with a broad range of skills. From the operational aspects of deck and ordnance to the technical expertise of engineering and aviation, each rating contributes uniquely to the service's ability to perform its duties. Whether on land, at sea, or in the air, Coast Guard personnel in these various ratings work together to protect the public, the environment, and U.S. economic and security interests in any maritime region.
What are the main categories of Coast Guard ratings?
+The main categories include Deck and Ordinance, Engineering and Hull, Aviation, and others, each encompassing various ratings with specific job duties and responsibilities.
How do I choose a Coast Guard rating that’s right for me?
+Choosing a rating involves considering your skills, interests, and career goals. Research the different ratings, their responsibilities, and the required training. It’s also beneficial to speak with Coast Guard recruiters or current service members in your desired rating for firsthand insights.
Can I change my rating after joining the Coast Guard?
+Yes, it is possible to change your rating, but it depends on various factors, including the needs of the Coast Guard, your qualifications, and the availability of training slots in your desired new rating. This process typically involves applying for a rating change and may require additional training or schooling.