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Marine Systems Mechanical Technician

Non-Commissioned Member | Full Time, Part Time

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DISCOVER

THE HIGH STAKES WORLD OF A MARINE SYSTEMS MECHANICAL TECHNICIAN.

PREPARE

FOR A LOOK INSIDE THE SKILL, EXPERTISE AND DEDICATION BEHIND THE OCCUPATION.

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Video 1 Thumbnail

JOIN

SAILOR 1ST CLASS DILLON O'LEARY AS THEY WALK YOU THROUGH A DAY IN THE LIFE. PLEASE NOTE MARINE TECHNICIAN HAS BEEN SPLIT INTO TWO OCCUPATIONS; MARINE SYSTEMS MECHANICAL TECHNICIAN AND MARINE SYSTEMS ELECTRICAL TECHNICIAN. THIS WALK AND TALK SHOWCASES ASPECTS OF BOTH OCCUPATIONS.

Overview

Please submit an application in the Online Applicant Portal under the previous occupation; Marine Technician, if you are interested in this occupation.

Marine Systems Mechanical Technicians (MSMTs) are members of a ship’s engineering department, responsible for the operation and maintenance of mechanical and structural systems onboard His Majesty's Canadian (HMC) Ships and Submarines.
They maintain, operate, and monitor equipment associated with the ship’s propulsion, ancillary, and auxiliary engineering systems. Additional duties include maintaining the ship’s structure, stability, damage control systems, and firefighting equipment. They also can be employed at shore repair and naval technical training facilities to support fleet activities.

MSMTs monitor, operate and maintain the mechanical machinery for the following:

Propulsion Systems

  • Monitoring engine performance parameters (temperatures, pressures, vibrations, fuel consumption)
  • Conducting routine and corrective maintenance (filters, injectors, turbochargers, compressors)
  • Managing start‑up, shutdown, and changeover procedures
  • Fault diagnosis and emergency response
  • Coordinating overhauls and condition‑based maintenance
  • Ensuring compliance with safety, emissions, and operational limits

Power Generation and Distribution Systems

  • Operating generator sets under varying loads
  • Synchronizing generators and managing load sharing
  • Monitoring fuel, cooling, and lubrication systems
  • Maintenance of alternators, excitation systems, and governors
  • Fault response to overloads, blackouts, or frequency instability

Ancillary systems

  • Operation of fuel transfer pumps and valves
  • Management of day tanks, service tanks, and storage tanks
  • Fuel quality monitoring and contamination prevention
  • Changeover between fuel types where applicable
  • Operation of freshwater and seawater cooling circuits
  • Heat exchanger cleaning and inspection
  • Monitoring flow rates, temperatures, and pressure drops
  • Leak detection and corrective maintenance
  • Spill prevention and response readiness
  • Oil sampling and condition monitoring
  • Operation of lube oil pumps, coolers, and filters
  • Managing oil replenishment and purification
  • Preventing cross‑contamination and oil degradation
  • Maintenance of hydraulic power units and accumulators
  • Operation and inspection of compressed air systems
  • Air receiver testing and draining
  • Ensuring reliable engine start capability under all conditions

Auxiliary systems

  • Managing potable and technical freshwater systems
  • Pump operation and tank level control
  • Water quality monitoring
  • Leak detection and system flushing
  • Operation of compressors and air dryers
  • Maintenance of HP and LP air receivers
  • Support for starting systems, control air, and ship services
  • Monitoring pressure, moisture, and oil carryover
  • Operation of chilled water and refrigeration plants
  • Temperature control for stores, accommodation, and equipment
  • Refrigerant handling and leak detection
  • Compressor, condenser, and evaporator maintenance
  • Maintenance of HVAC systems
  • Temperature and humidity control
  • Air filtration and fan maintenance
  •  Supporting habitability and equipment cooling requirements
  • Operation of Reverse Osmosis plants to produce freshwater
  • Membrane cleaning and replacement
  • Monitoring pressures, salinity, and production rates
  • Managing pre‑treatment and post‑treatment systems
  • Operation of centrifuges and separators
  • Sludge management and disposal
  • Monitoring separation efficiency
  • Supporting engine reliability and longevity
  • Operation of oily water separators
  • Management of bilge and sludge systems
  • Monitoring discharge criteria and alarms
  • Compliance with environmental regulations and shipboard procedures
  • Maintenance of sewage treatment plants
  • Operation of vacuum or gravity drainage systems
  • Pump and macerator maintenance
  • Odour control and hygiene management

Damage Control Systems

  • Maintenance of fire pumps and main
  • Inspection of fixed firefighting systems (CO₂, water mist, foam)
  • Testing detectors, alarms, and remote closures
  • Supporting fire teams during incidents
  • Post‑fire recovery and system restoration
  • Operation of bilge and ballast systems
  • Monitoring watertight integrity
  • Use of portable and fixed dewatering pumps
  • Supporting damage control teams during flooding incidents
  • Maintaining valves, sensors, and remote controls

In addition, MSMTs will:

  • Read and interpret engineering sketches and drawings, including mechanical and hydraulic, pneumatic and fluid drawings 
  • Calculate ship stability and identify potential problems
  • Fabricate, machine and weld parts and equipment

Work environment

MSMTs spend much of their career on board ships based in either Halifax, Nova Scotia, or Esquimalt, British Columbia. Their duties can include repairing or maintaining equipment and participating in ship‑wide evolutions such as fueling both at sea and alongside. While at sea, all members of the ship’s company stand watch in shifts. When the ship is alongside, MSMTs typically work a regular day‑shift schedule.

In addition to their primary duties, junior MSMTs may spend time working outside their occupation performing general duties such as cleaning, painting, working in the cafeteria or loading supplies.

Related Civilian Occupations

  • Marine Engineer
  • Stationary Engineer and Auxiliary Equipment Operator
  • Hydro Power Station Operator
  • Arc/Acetylene Welder
  • Heavy-Duty Equipment Mechanic
  • Millwright
  • Plumber
  • Sheet Metal Worker
  • Equipment Mechanic

Training

The first stage of training is the Basic Military Qualification course, or Basic Training, held at the Canadian Forces Leadership and Recruit School in Saint-Jean-sur-Richelieu, Quebec. This training provides the basic core skills and knowledge common to all trades in the CAF. One of the goals of this course is to ensure that all recruits maintain the Forces physical fitness standard; as a result, the training is physically demanding.

Learn more about Basic Training here.

MSMTs attend Naval Fleet School Pacific in Esquimalt, British Columbia or Naval Fleet School Atlantic in Halifax, Nova Scotia. Training takes 3 months and includes:

  • Basic mechanical, electrical and hull systems theory
  • Basic preventive and corrective maintenance for marine systems
  • The conduct of propulsion and ancillary engineering rounds
  • Equipment flash-up and shut-down procedures
  • Basic emergency responses to equipment failures
  • Repair of watertight and non-watertight closures

Following this initial in class training, MSMTs will be posted to a ship to complete a hands-on training package and begin implementing the training they've received in real life scenarios.

MSMTs may be offered the opportunity to develop specialized skills through formal courses and/or on-the-job training, including:

  • Small boat mechanic and flight deck mechanic
  • Technical support for marine helicopter operations
  • Helicopter crash rescue firefighting
  • Welding
  • Fabrication / machining
  • Diesel maintainer and inspector
  • Gas turbine maintainer
  • Refrigeration technician

As they progress in their career, MSMTs who demonstrate the required ability and potential may be offered advanced training. Available courses include:

  • Advanced mechanical preventive / corrective maintenance
  • Plant operation and watch supervision
  • Advanced firefighting / damage control
  • Refit management
  • Equipment lifecycle management
  • Maintenance management
  • Project management

Entry plans

The minimum acceptable education to apply for this position is the completion of provincial requirements for Grade 10, including Grade 10 Applied Math & Grade 10 Applied Science.

Non-Commissioned Member Subsidized Training and Education Program (NCMSTEP).

Because this position requires specialty training, the CAF will pay successful recruits to attend the diploma program at an approved Canadian college. NCMSTEP students attend basic training and on-the-job training during the summer months. They receive a full-time salary including medical and dental care, as well as vacation time with full pay in exchange for working with the CAF for a period of time. If you choose to apply to this program, you must apply both to the CAF and the appropriate college. 

Learn more about our Paid Education programs here.

Part time options

This position is available for part-time employment with the Primary Reserve at certain locations across Canada. Reserve Force members usually serve part time at a Naval Reserve Division (NRD) in their community and may serve while going to school or working at a civilian job. Naval Reservists are paid during their training. They are not posted or required to  conduct military moves. However, they can voluntarily transfer from one NRD to another. They may also volunteer for deployment on military missions within or outside Canada.

MSMT – Reserve serve as members of the Royal Canadian Navy. Like their Regular Force counterparts, they are employed for the operation and maintenance of all mechanical and structural systems onboard RCN ships up to the rank of Sailor 1st Class. Reserves provide technical expertise in support of boatsheds, performing advanced preventive and corrective maintenance on small boats. In support of Annual Naval Summer Training Unit (ANSU) conduct setup, operation and maintenance of power generation, ventilation, and related systems for portable operation centers and camps. In support of operations, Reserves may progress to taking charge of the maintenance teams and the equipment under their responsibility. Part-time employment is normally in the MSMT’s NRD; some part-time training is conducted on weekends at naval schools or on ships afloat. Casual full-time employment on  ships, ANSU exercises and operations, and at naval schools is commonly available in the summer months.

Find a Recruiting Centre

Reserve Force members are trained to the same level as their Regular Force counterparts for work that is common to the two components. Reservists usually begin training in their Naval Reserve Division to prepare them for the Basic Military Naval Qualification course at Naval Fleet School Quebec. Following basic training and naval environmental training, MSMT - Reserve complete their occupation qualification at either Naval Fleet School Pacific in Esquimalt, British Columbia or Naval Fleet School Atlantic in Halifax, Nova Scotia for approximately nine weeks.

Reserve Force members usually serve part-time with their home NRD for scheduled evenings and occasional weekends. They are paid 93% of Regular Force rates of pay, receive a reasonable benefits package including a pension plan, and may qualify for reimbursement of civilian education expenses.