Marine Electric Propulsion is a one-week survey course with formal lectures and demonstrations. This survey course provides an introduction to the principles and technologies used in the design and operation of marine electri propulsion drives based on the synchro-converter topology. The course begins with a thorough review of the production and control of three-phase electric power. Power flow is then followed through cables, switchboards, phase-shifting transformers, SCR-based controlled-rectifiers, to the DC-link. Standard six-pulse inverters supplied from the DC-link are then studied, as are synchronous propulsion motors and their excitation systems. For each portion of the system studied, appropriate elements of electric power systems, power electronics, instrumentation, and operational maintenance requirements are discussed. Practical demonstrations are offered to reinforce important fundamental concepts. Additional topics include buck and boost converters, phasor notation, system protection and coordination, transformer vector groups, harmonics, harmonic filters, CTs and VTs, SCR testing, heat-sinks, thermal management, soft-starters, phase control, P-Q-S analysis, and general power system topics.


Course Capacity: 12 students

Prerequisites: Experience with shipboard power plant operation and knowledge of basic electricity and electronics

Special Requirements: This course is typically taken in conjunction with the High Voltage Safety course.

USCG Approval: Any applicant successfully completing the Marine Electric Propulsion (MEBAMD-268) course and presenting the certificate of training will be considered to meet the training requirements and competencies of Table A-III/1 of the STCW Code, as amended – Operate main and auxiliary machinery and associated control systems – for vessels powered by Electric Propulsion systems; AND of Table A-III/2 of the STCW Code, as amended – Start up and shut down main propulsion and auxiliary machinery, including associated systems; Operate, monitor and evaluate engine performance and capacity; Maintain safety of engine equipment, systems and services – for vessels powered by Electric Propulsion systems; AND

Any licensed engineer successfully completing the Instrumentation (MEBAMD-230) AND Marine Electric Propulsion (MEBAMD-268) courses will satisfy the Management of Electrical and Electronic Control Equipment, course requirements of 46 CFR,:

  1. 11.325(a)(3)(iii) and 11.325(b)(3) for Chief Engineer (4000 hp)
  2. 11.327(a)(3)(iii) and 11.327(b)(3) for Second Engineer Officer (4000 hp)
  3. 11.331(a)(3)(iii) and 11.331(b)(3) for Chief Engineer (1000 to 4000 hp)
  4. 11.333(a)(3)(iii) and 11.333(b)(3) for Second Engineer Officer (1000 to 4000 hp)



The Calhoon MEBA Engineering School is a private maritime educational facility for training members of the Marine Engineers Beneficial Association, as well as all maritime and related industry professionals.


To provide each of today's professional marine engineers, deck officers, and related industry professionals with internationally recognized, state of the art training and experience that enhances the safety, reliability, and profitability of their vessels and equipment, while preserving and protecting the natural environment.

The Calhoon MEBA Engineering School (CMES) does not and shall not discriminate on the basis of race, color, religion, gender, gender identity, age, national origin, disability, marital status, sexual orientation, or military status, in any of its activities or operations. These activities include, but are not limited to, hiring and firing of staff, selection of volunteers and vendors, and provision of services. CMES is  committed to providing an inclusive and welcoming environment for all MEBA members, our staff, volunteers, sub-contractors, vendors, and customers.