1833 Assault Amphibious Vehicle Crewmember

You drive a 30-ton amtrac into the surf zone, open the ramp, and swim a rifle platoon ashore. Then you extract. That is the job. You are not infantry. You are not a sailor. You are the bridge between the ship and the beach, and you do it under fire.

MOS 1833 Assault Amphibious Vehicle Crewmember is a combat arms role inside a 26-foot armored hull that floats, swims open ocean, and carries 21 combat-loaded Marines. The crew is three people. The platform is heavy, complex, and unforgiving. If you get it right, the infantry gets ashore. If you get it wrong, Marines die.

The AAV community is mid-transition. The Marine Corps is fielding the BAE Systems Amphibious Combat Vehicle (ACV) and drawing down legacy AAV assets. Marines entering the 1833 field today may serve on both platforms before the force fully converts. The ACV crew path is MOS 1834, covered separately.

Job Role and Responsibilities

MOS 1833 Assault Amphibious Vehicle Crewmember is the Marine Corps enlisted crew position for the AAV7A1. Crewmembers operate and maintain an amphibious assault vehicle that transports infantry from ship to shore, provides fire support with the .50 caliber M2HB machine gun and Mk 19 grenade launcher, and supports mechanized operations ashore. The crew works as a three-person team: driver, crew chief/gunner, and vehicle commander.

The work breaks into four recurring areas.

Vehicle operation and maintenance. The AAV7A1 is a complex machine. Engine, transmission, ramp, bilge pumps, waterproofing seals, and suspension all require daily inspection and scheduled service. Preventive maintenance checks and services (PMCS) are not optional. A vehicle that floods at sea or breaks down on the beach is a liability to every Marine in the rear compartment. Crewmembers spend a significant portion of every garrison day in the motor pool.

Gunnery and weapons handling. The crew trains on the .50 cal M2HB and Mk 19 40mm grenade launcher regularly. Before any major exercise or deployment, the crew must qualify on assigned weapons systems. That means bore-sighting, loading, firing, clearing stoppages, and cleaning, every time.

Amphibious operations. The AAV is designed to launch from an amphibious ship, cross open water, negotiate surf, and land on a beach with infantry in the back. Crewmembers train extensively on water operations: sea-state assessment, ramp procedures, bilge pump operations, and emergency egress protocols if the vehicle takes on water. This training is never theoretical. Water operations are where the AAV earns its reason to exist, and they carry real risk.

Mounted tactical movement. Once ashore, the AAV supports mechanized maneuver. Crewmembers conduct movement with infantry units, coordinate with vehicle commanders and platoon leadership, and execute tactical tasks including convoy operations and security.

MOS Codes in OccFld 18

The 1833 field is the legacy AAV crew track. As the Marine Corps transitions to the ACV, some 1833-coded billets are being converted to 1834. Marines in the transition window may serve in both capacities depending on unit equipment status.

Equipment

The primary platform is the AAV7A1, with the EAAK (Enhanced Applique Armor Kit) installed on many vehicles. Crew systems include:

• .50 caliber M2HB heavy machine gun
• Mk 19 40mm grenade launcher
• AN/VRC-92 SINCGARS radio systems
• Blue Force Tracker (BFT) situational awareness system
• Night vision and thermal optics on the UGWS (Upgraded Gun Weapon System) variant
• Bilge pump and waterproofing systems specific to amphibious operation

Salary and Benefits

Pay for a new 1833 Marine starts at E-1 or E-2 depending on prior college credits or JROTC participation. Most Marines reach E-4 (Corporal) during their first enlistment, which is the grade where monthly base pay and housing allowance together typically exceed what most entry-level civilian jobs pay in the same markets.

Source: DFAS 2026 pay tables. Figures reflect the 2026 pay raise.

Base pay is subject to federal income tax. The allowances below are not.

Special pays are not standard at accession for 1833, but hostile fire pay ($225/month) and hardship duty pay apply during qualifying deployments. Marines serving at Camp Lejeune and Camp Pendleton have BAH rates that cover most off-base housing options for a single Marine at the E-4 level.

All active-duty Marines receive TRICARE Prime at no enrollment cost or premium. Coverage includes medical, dental, vision, mental health, and prescriptions. Family members enrolled under the sponsor’s plan pay no enrollment fee and no in-network copays, with an annual catastrophic cap for the household. This benefit is one of the most concrete financial advantages of active-duty service over comparable civilian employment.

Education benefits include Marine Corps Tuition Assistance up to $4,500 per year and $250 per semester hour for courses taken during service. After separation, the Post-9/11 GI Bill covers full in-state tuition at public schools or up to $29,920.95 per academic year at private schools, plus a monthly housing allowance and up to $1,000 annually in book stipends. Marines who want to finish a degree while serving can take evening or online courses using Tuition Assistance and then transfer that credit toward a faster post-service completion using the GI Bill.

Marines accrue 30 days of paid leave per year at 2.5 days per month, with a maximum carryover of 60 days into the next fiscal year. Leave during pre-deployment work-ups can be limited, so planning vacation time around the unit’s operational cycle matters.

Retirement under the Blended Retirement System (BRS) combines a pension worth 40% of your high-36 average basic pay at 20 years, a Thrift Savings Plan (TSP) with government matching up to 5% of basic pay starting in year three, and a mid-career continuation pay bonus between years eight and twelve. Marines who do not reach 20 years still walk away with TSP savings and whatever GI Bill benefits they have not used.

Qualifications and Eligibility

The Mechanical Maintenance (MM) composite is the key line score. MM draws on Arithmetic Reasoning (AR), Mechanical Comprehension (MC), Auto and Shop Information (AS), and Electronics Information (EI). Marines with strong mechanical aptitude and comfort with systems-level thinking tend to score well here.

If your ASVAB scores fall short, you may retest after a waiting period. Review the ASVAB preparation guide and the PiCAT option before your first attempt. PiCAT allows an unproctored prescreen that can help you identify score gaps before the proctored MEPS test.

Application and Selection

The path to 1833 runs through a Marine Corps recruiter and the Military Entrance Processing Station (MEPS). At MEPS you take the ASVAB, complete a physical, and receive a job offer based on scores and available billets. There is no formal selection board for entry-level 1833 Marines. A strong MM score, clean record, and available 18-field billets are the deciding factors.

Marines enter service as Private (E-1) regardless of MOS. Standard active-duty enlistment is four years, though three-year options exist in some programs. Service obligation begins on the date of initial entry into active duty.

Work Environment

Daily Environment

The 1833 daily environment splits between the motor pool, the field, and the ship. At home station, mornings start with vehicle checks and scheduled maintenance. Afternoons rotate between training events, gunnery preparation, physical conditioning, and administrative requirements. Field exercises run several times a year for days to weeks at a stretch. MEU deployments require extended shipboard time, with vehicles stored in the well deck and crews living in berthing spaces aboard amphibious ships. The work pace shifts dramatically between garrison and deployment, and new Marines who struggle with the garrison maintenance grind often find deployment tempo more manageable.

Crew life is close. Three people share a vehicle, shared maintenance load, and shared accountability. That dynamic is tighter than a typical infantry squad. Crew chemistry matters directly because bad performers are visible to their two crewmates every single day. You cannot hide in a three-person crew. If a vehicle fails pre-ops inspection, everyone knows who owns that maintenance task.

The chain of command runs from crew chief up through section commander, platoon commander, and company leadership. AAV platoons typically run five vehicles per section. Feedback is fast in this environment because maintenance failures and gunnery misses show up in daily operations, not in quarterly reviews.

Performance evaluation for E-4 and below uses proficiency and conduct marks documented in the Unit Diary. Staff Noncommissioned Officers at E-6 and above receive FITREPs (Fitness Reports). High marks require consistent vehicle readiness, weapons qualification, and visible crew leadership. Marines who volunteer for the additional maintenance burden, step up during gunnery qualifications, and keep their vehicle above the fleet average readiness rate tend to receive the marks that drive competitive promotion.

The work environment involves regular heat exposure inside the vehicle, sustained engine and weapons noise, and confined-space maintenance work. Inside the engine compartment during a maintenance cycle, temperatures exceed 100 degrees in summer. Hearing protection is mandatory but does not eliminate all exposure. Marines who build good maintenance habits early in their career tend to protect their hearing better than those who treat protection as optional during low-tempo days. Long-term, that matters for quality of life and VA claims.

Marines who thrive in this environment take the technical side seriously and find crew accountability motivating rather than oppressive. Those who prefer solo work or a quiet environment tend to struggle with the intensity of three-person crew dynamics.

Training and Skill Development

Initial Training Pipeline

Boot Camp is 13 weeks of recruit training covering drill, physical conditioning, rifle marksmanship, and Marine Corps values and standards. After Boot Camp, all non-infantry Marines attend Marine Combat Training (MCT), a 29-day school covering squad tactics, live-fire, land navigation, and individual combat skills every Marine carries regardless of MOS.

The AAV Crewman Course at Camp Pendleton’s Amphibious Vehicle Training Branch is where the 1833 MOS is built. The school covers vehicle systems in depth: powerplant familiarization, ramp operations, bilge pumping procedures, open-water operations, gunnery qualification on the .50 cal and Mk 19, radio procedures, and tactical employment. Graduates are assigned to a fleet Assault Amphibious Vehicle Battalion or AAV company attached to a Marine infantry regiment.

Advanced Training

After fleet assignment, crewmembers work toward crew chief qualification through demonstrated proficiency evaluated at the unit level.

Advanced opportunities include:

• Crew Chief Qualification - fleet-level qualification through demonstrated maintenance, gunnery, and amphibious performance
• Master Gunner Course - available to senior NCOs and SNCOs; produces vehicle gunnery experts qualified to train others
• Water operations qualifications - unit-level certifications for AAV platoons that support reconnaissance operations
• Instructor billets at the Amphibious Vehicle Training Branch following a successful first enlistment and demonstrated expertise
• MOS 1834 transition training - as the ACV replaces the AAV, experienced 1833 Marines may receive formal transition qualification on the new platform

The Marine Corps supports professional development through Marine Corps Institute (MCI) correspondence courses, Tuition Assistance-funded college courses, and the Marine Corps University distance education program.

Career Progression and Advancement

Rank Progression

Career progression in the 1833 field rewards Marines who maintain their vehicle, qualify their crew, and step into crew chief and section leader roles. Gunnery Sergeants and above typically manage entire platoons or serve as senior advisors on vehicle tactics and employment.

Promotion is competitive from E-4 upward. The composite score, which draws on FITREP marks, time in grade, time in service, rifle score, PFT score, and education points, determines standing on the promotion list.

Marines who want to transfer MOS can apply through the Lateral Move (LATMOVE) program after completing a first enlistment. OccFld 18 is combat arms, and some receiving fields may have different requirements. Marines in other fields who want to cross into the vehicle community can request a LATMOVE if 18-field billets are available.

Physical Demands and Medical Evaluations

Working inside and around an AAV is physically demanding. The vehicle has limited interior clearance. Getting in and out requires climbing over the crew hatch and hull. Maintenance involves working in confined spaces, lifting heavy components, and operating in extreme heat inside the engine compartment. Water operations add stress from buoyancy, surf impact, and working around open ramps in rough seas.

Daily physical demands include:

• Climbing on and off vehicle hulls regularly throughout the workday
• Lifting and carrying ammunition for the .50 cal and Mk 19
• Performing maintenance in confined spaces requiring hand strength and dexterity
• Operating under sustained noise, heat, vibration, and communication stress during exercises and deployments

PFT and CFT Standards (2026)

Marines must pass both the PFT and CFT annually. Failure has direct consequences on promotion eligibility and may affect retention. For a job that operates in close proximity to infantry, physical readiness reflects real operational readiness.

Medical evaluations beyond initial accession include periodic health assessments and pre-deployment screening. Hearing tests matter here: sustained noise exposure from the AAV engine and weapons systems is significant. Long-term hearing damage is a documented occupational hazard. No additional medical waiver is required specifically for 1833, but Marines with documented hearing loss may face reclassification.

Deployment and Duty Stations

Primary Duty Stations

The majority of 1833 Marines serve at Camp Pendleton or Camp Lejeune. Both installations are mature communities with off-base housing markets that BAH rates at the E-4 and E-5 levels can support. Camp Pendleton sits along the Southern California coast north of San Diego. Camp Lejeune is located outside Jacksonville, North Carolina, with Atlantic coastal access that supports amphibious training year-round.

Okinawa is a different experience. The 3rd AAV Battalion at Camp Schwab serves as the forward-deployed Pacific element. UDP rotations to Okinawa typically run 7-9 months. Marines assigned to Okinawa operate under overseas living conditions and a different pace than the continental United States. The island supports a significant Marine Corps community with MCCS facilities, but off-base living arrangements require more planning than stateside assignments.

Deployment Tempo

Deployment frequency for AAV crewmembers is high relative to non-combat-arms MOS. MEU deployments run 6-7 months and rotate approximately every 18-24 months from each coast. The MEU cycle includes a work-up period of roughly 12-18 months of training before the actual float: amphibious exercises, gunnery qualifications, and combined arms events.

Marines on MEU deployment may operate in the Pacific, Mediterranean, or Middle East depending on MEU assignment and global demand. UDP rotations to Okinawa are separate from MEU cycles and provide additional deployment time for Pacific-based units.

A Marine in a standard four-year enlistment at an active MEU-cycle unit should expect at least one MEU float and possibly one UDP rotation. That amounts to roughly 12-14 months of the enlistment spent deployed or forward-deployed, before accounting for pre-deployment training events that also require time away from home. Marines who prefer a more predictable schedule should consider this deployment picture honestly before committing to OccFld 18.

Risk, Safety, and Legal Considerations

Amphibious vehicle operations carry specific hazards that crewmembers face throughout their career.

Water operations risk. The AAV7A1 operates in open ocean. Vehicle flooding, unexpected weather, and mechanical failure at sea are real threats. Crewmembers train extensively on emergency egress from a submerged vehicle and must maintain their swimming qualifications. The risk is not theoretical. In July 2020, during a training exercise off San Clemente Island, an AAV7A1 sank with Marines and a Navy sailor on board. Eight Marines and one sailor were killed. The incident led to suspension of water operations, structural safety reviews, and revised protocols for bilge pump inspection, ramp seal checks, and maximum sea-state limitations before water launch. Those protocols are now enforced rigorously across the fleet.

Vehicle rollover and collision risk. Heavy vehicles in confined shipboard spaces and during land movement carry rollover and collision risk. Speed limits, movement SOPs, and shipboard chocking and tie-down procedures are strictly enforced.

Hearing and vibration exposure. Sustained operation exposes crewmembers to significant engine and weapons noise. Hearing protection is mandatory during operations. Long-term hearing damage is a documented occupational hazard across the AAV community.

Ordnance handling. .50 cal and 40mm ammunition is live and handled during every gunnery event. Safety violations are treated as serious UCMJ offenses. Ammunition accountability is not informal in this community.

No security clearance is required for 1833 at accession. Standard service obligation is four years. Marines are subject to the Uniform Code of Military Justice (UCMJ) throughout their service. Pre-deployment legal and rules-of-engagement briefings precede any operational deployment to a conflict zone.

Legal obligations for vehicle crewmembers extend to maintenance accountability. A vehicle that fails inspection because of missed PMCS items is a command-level concern, not just a crew issue. Maintenance fraud, meaning signing off on inspections not actually performed, is a UCMJ violation. Marines who treat the logbook as a box-check rather than a record of real work create liability for their crew and their chain of command.

Impact on Family and Personal Life

Duty Station Life

Assignments at Camp Pendleton and Camp Lejeune place Marines in areas with solid off-base housing and school options. BAH rates at both installations allow most married Marines to live off-base comfortably, and both communities have decades of experience supporting Marine families through deployment cycles. The Oceanside and Jacksonville areas each have established networks of rental housing geared toward military families, with proximity to good schools and civilian employment for spouses.

MEU deployments run 6-7 months, with communication constrained by operational security requirements during some periods. The 12-18-month work-up period before a MEU also takes Marines away from home for field exercises and training events. Families at both installations are part of a network that understands the deployment rhythm because most of their neighbors are in the same situation.

The Marine Corps Family Team Building (MCFTB) program provides family readiness groups and deployment support resources that activate before the float leaves and continue until the unit returns. Military OneSource offers free counseling, financial planning, and transition assistance available 24 hours a day, including sessions specifically designed for spouses managing households during deployment. Marine Corps Community Services (MCCS) provides on-base childcare, fitness, recreation, and family support at all major installations.

Permanent Change of Station (PCS) moves happen every two to three years on average. Moving expenses are covered through the Dislocation Allowance (DLA) and the Personally Procured Move (PPM) program. Families who handle the relocation process proactively, starting school enrollment and housing searches months in advance, generally experience less disruption than those who wait until orders are cut.

Marines who plan to have families during their 1833 service should think through the realistic deployment picture from the start. The time-away demands are real and predictable. Planning around them is better than being surprised by them.

Marine Corps Reserve

MOS 1833 is available in the Marine Corps Reserve, but access is limited by where Reserve AAV or ACV units exist. Reserve amphibious vehicle billets are geographically concentrated, not spread across the country like some support MOS communities. Check with a recruiter for current unit locations before treating Reserve 1833 as a local option.

Active Duty vs. Marine Corps Reserve: 1833 Comparison

Reserve drill weekends in this MOS include maintenance, gunnery refresher training, and unit-level readiness events. Vehicle crew MOS communities typically require more training time than standard Reserve schedules due to platform certification and water operations recurrency requirements. A Reserve 1833 Marine who does not stay current on water operations qualifications may be unable to participate in the most operationally relevant training events, which limits their value to the unit and their own career development.

The geographic concentration of Reserve amphibious vehicle units means this is not a MOS you can simply add to a resume while living anywhere in the country. If you are considering Reserve 1833, confirm that a qualifying unit exists within a reasonable commute before pursuing it through recruiting.

Reserve Marines who do mobilize for named operations typically deploy under Title 10 active-duty orders. They receive the same pay, benefits, and TRICARE coverage as their active-duty counterparts for the duration of those orders. USERRA protections apply during any mobilization period, ensuring civilian employers cannot legally penalize Reserve Marines for military service. The Employer Support of the Guard and Reserve (ESGR) program provides ombudsman services if conflicts with civilian employers arise.

Post-Service Opportunities

The 1833 MOS does not translate directly into a licensed civilian vehicle operator credential the way some MOS fields do, but the skills transfer in clear directions: government vehicle programs, defense contracting, law enforcement, and mechanical trades.

Civilian Career Crosswalk

The Transition Readiness Program (TRP) connects separating Marines with employment resources, education counseling, and VA benefits enrollment assistance. TRP workshops cover resume writing, interview preparation, networking, and the process of translating military experience into civilian job titles. The Post-9/11 GI Bill covers college or vocational training after service. Marines who earned ASE (Automotive Service Excellence) certifications or community college credits during their enlistment have a head start on the post-service credential ladder. The VA’s Vocational Rehabilitation and Employment (VR&E) program provides additional support for Marines with service-connected disabilities, including job training and placement assistance beyond what the GI Bill alone covers.

Marines separating from the 1833 field with strong PMCS records and crew chief qualifications should frame their civilian job search around heavy equipment maintenance, fleet management, and logistics supervision roles. The practical hands-on experience with complex mechanical systems translates well to industrial and transportation sector hiring managers who understand what vehicle accountability in a military context actually means.

Is This a Good Job for You? The Right (and Wrong) Fit

Good fit if:

• You want combat-arms culture with a vehicle and crew rather than foot-mobile infantry
• You are mechanically minded and find satisfaction in maintaining complex systems
• You prefer working in a small, tight crew where everyone is accountable to each other
• You can handle physical demands in confined spaces, heat, and varied field conditions
• You want an expeditionary, ship-based deployment cycle rather than a garrison desk

Poor fit if:

• You want a predictable schedule or a quiet work environment
• You are not comfortable with water operations, rough seas, or risk in open-ocean vehicle movements
• You prefer individual technical work over crew-dependent team performance
• You are not willing to commit to a vehicle-heavy community for multiple enlistments to reach senior roles

Long deployments, physically demanding daily conditions, and the weight of collective vehicle accountability are real features of this MOS. Marines who stay in the field for two or more enlistments frequently cite crew cohesion and operational intensity as the primary reasons they re-enlisted. The tightness of the three-person crew, the shared ownership of a platform that has to perform in open ocean and under fire, and the stakes of the amphibious assault mission attract a specific type of Marine and tend to retain them.

Marines who want a technical MOS with stronger civilian credential transfer should compare 1833 against OccFld 28 (Ground Electronics Maintenance) or OccFld 35 (Motor Transport), where skills map more directly to licensed trades or technical degrees that civilian employers recognize without translation. The 1833 experience is genuinely valuable, but it requires more active translation in a civilian job search than some other technical fields.

If the AAV platform’s place in history appeals to you but you want a role on the Marine Corps’ current-generation amphibious vehicle, read the 1834 Amphibious Combat Vehicle Crew Marine profile to understand the differences in the ACV platform, crew training, and transition timeline.

This site is not affiliated with the U.S. Marine Corps or any government agency. Verify all information with official Marine Corps sources before making enlistment or career decisions.

More Information

Talk to a Marine Corps recruiter or visit your nearest Marine Corps Recruiting Station (RSS) to confirm current 1833 billet availability, school schedules, and enlistment incentives. The Marine Corps Recruiting Command at mcrc.marines.mil is the authoritative source for current accession requirements.

Explore more OccFld 18 Tank, Assault Amphibious Vehicle, and Amphibious Combat Vehicle careers including the 1834 Amphibious Combat Vehicle Crew Marine.

Need score context? Review the ASVAB guide and the PiCAT guide before publishing permanent MOS content.