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MOS COMPARISON

BM vs AD

Boatswain's Mate (USCG) vs Aviation Machinist's Mate (USN)

Intel

The Navy has nuclear weapons. The Coast Guard has jet skis with guns. Both are technically naval forces. The comparison ends there.

Two promises walked into a recruiting station. The first: "operate in environments the Navy doesn't go: shallow water rescues, river operations." The second: "maintain jet engines on Navy and Marine Corps aircraft." Both promises were technically true in the way that "water is involved in surfing" is technically true about the Navy. BM reality: line handling, towing, aids to navigation maintenance, port security boardings, and being the most competent mariner in any room you walk into — that's the job. AD reality: your workspace is either a flight deck on a CVN in 40-knot winds or a hangar bay where the temperature is 20 degrees hotter than outside due to reasons nobody can explain. Two career fields that process grief about career choices at the same VA, just in different waiting rooms.

BMCoast Guard
Boatswain's Mate
Overall ratingNo reviews yet
Do It Again
Civilian Pay
$88K
ADNavy
Aviation Machinist's Mate
Overall ratingNo reviews yet
Do It Again
Civilian Pay
$100K
Head to Head
BM
AD
Getting In
ASVAB Line Scores
AFQT 40
VE_AR_MK_AS 210
Clearance
None
Pay Grade
Enlisted
Enlisted
Training
Training Length
14 wk
16 wk
Pipeline Type
Recruit Training + A-School
Boot Camp
Training Location
TRACEN Yorktown, VA
NATTC Pensacola, FL
Day-to-Day
Promotion Speed
Average
Deployment Tempo
Moderate
Career Field
Deck and Operations
Aviation
After You Get Out
Civilian Median Pay
$88K
$100K
Top Civilian Career
Captains, Mates, and Pilots of Water Vessels
Mechanical Engineers
Credentials Earned
3 certs
DoD 4-Year Investment
$302K

After the Uniform

The part the recruiter skips: what each job actually translates to once you're a civilian — and what it pays.

BMBoatswain's Mate
Civilian Median Pay
$88K/yr
What It Becomes on the Outside
Captains, Mates, and Pilots of Water VesselsStrong
Job market: Average (3%)
$88K
Captains, Mates, and Pilots of Water VesselsStrong
Ship EngineersRelated
Job market: Average (4%)
$88K
LogisticiansRelated
Job market: Faster than average (18%)
$79K
Credentials You Walk Away With
Boat crew qualificationCoxswain qualificationVarious USCG boarding officer/team member certifications
ADAviation Machinist's Mate
Civilian Median Pay
$100K/yr
What It Becomes on the Outside
Mechanical EngineersStrong
Job market: Average (10%)
$100K
Aircraft Mechanics and Service TechniciansStrong
Bus and Truck Mechanics and Diesel Engine SpecialistsRelated
Job market: Average (2%)
$54K
Electrical and Electronics Engineering Technologists and TechniciansRelated
Job market: Average (2%)
$64K

Salary data from the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics program. A guide, not a guarantee.

Recruiter vs. Reality

The pitch versus what people who actually did the job report back.

BMBoatswain's Mate
What the Recruiter Says

BM is the Coast Guard's original rating — seamanship, small boat operations, deck handling, and every skill that makes a mariner. You'll operate in environments the Navy doesn't go: shallow water rescues, river operations, and the 45-foot RBM boats that work close to shore when conditions are at their worst. The Merchant Marine pathway is well-established for experienced BMs, and USCG deck officer licensing is achievable. This is the closest thing the modern military has to what sailors have always been.

What It's Actually Like

BM is the most physically demanding rating in the Coast Guard and the one with the broadest seamanship depth. You'll do actual small boat operations in actual bad weather because that's when people call the Coast Guard. Line handling, towing, aids to navigation maintenance, port security boardings, and being the most competent mariner in any room you walk into — that's the job. The prestige in the maritime community is genuine: USCG BMs are respected by merchant mariners who would never admit that about any other military branch. The hours are real, the sea time is real, and the wear on your body accumulates. Merchant Marine licensing is achievable and worth pursuing while you're in.

ADAviation Machinist's Mate
What the Recruiter Says

You'll maintain jet engines on Navy and Marine Corps aircraft — F404s in the F/A-18, F135s in the F-35, T56 turboprops in the E-2C. The technical depth of naval aviation powerplant maintenance is significant, and the FAA Powerplant certificate is directly achievable through military engine experience. Major airlines and MRO facilities are in a persistent competition for A&P-certified technicians with military jet engine experience, and they recruit at Navy transition events specifically for this reason. The pay for an A&P powerplant specialist at a major airline MRO is real money. The Navy is paying for the training.

What It's Actually Like

You will become intimately familiar with the GE F414 and the Pratt & Whitney F100 in ways the engineers who designed them never intended, primarily because you are maintaining them with fewer people and less sleep. Your workspace is either a flight deck on a CVN in 40-knot winds or a hangar bay where the temperature is 20 degrees hotter than outside due to reasons nobody can explain. A jet engine inspection that the manual says takes four hours will take twelve because three of the required tools are on another aircraft, one is missing entirely, and the work order has a typo. You will develop a second sense for the difference between a normal engine noise and an 'oh no' engine noise. Civilian aviation maintenance is absolutely within reach — A&P certification pathway is legitimate — but the Navy will wring every possible flight hour out of you first. The moment you marshal a jet that you fixed and watch it come off the waist cat is the closest thing to pride the aviation world offers.

The Real Life

Same dimensions, side by side. BM on the left, AD on the right.

Daily Life
BM

Small boat operations, search and rescue, law enforcement boardings, aids to navigation maintenance, and deck seamanship. At a small boat station, you respond to distress calls, conduct patrols, and maintain buoys and waterways. On a cutter, you lead deck operations and boarding teams.

AD

Training / School
BM

A-school at Training Center Yorktown (VA) is about 12 weeks covering seamanship, navigation, boat handling, and deck operations. The training is hands-on and directly applicable — you learn to drive boats and handle lines in real conditions.

AD

Physical Demands
BM

Very high. Heavy weather boat operations, line handling, anchor detail, and deck operations in extreme maritime conditions. Upper body strength and sea fitness are essential.

AD

Where You'll Be Stationed
BM
Various small boat stations nationwideCoast Guard CuttersStation Cape Disappointment (WA)Station Chatham (MA)District offices
AD
The Honest Truth
BM

Boatswain's Mate is the Coast Guard's signature enlisted rate — the sailor who drives the boats, leads the deck crew, and runs the small boat stations that define the Coast Guard's daily mission. The recruiter will highlight search and rescue, and it is as exciting and meaningful as it sounds. The honest truth: most days are routine — maintenance, training, and patrol. But when the phone rings at 0200 with a vessel in distress, you launch into heavy seas and do the work that most people only see in movies. The physical demands are real and the conditions can be brutal. The maritime industry values experienced BMs for their seamanship and leadership. Not the highest-paying rate, but perhaps the most fulfilling for those who love the water.

AD

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