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Maritime NZ Marine Engineer Class 4 (MEC 4) Certificate of Competency (MNZ SeaCert & STCW) Requirements for New Zealand Seafarers

marine engineer mec4

The MNZ Marine Engineer Class 4 (MEC 4) is issued under Subpart B of Maritime Rule 32 - National Certificates, including STCW-F aligned NZ national certificates. This certificate corresponds with a certificate issued under Regulation II/5 of the International Convention on the Standards of Training, Certification and Watchkeeping for Fishing Vessel Personnel, 1995 (STCW-F).

With this certificate, you can perform the functions and duties of chief engineer on - passenger and non-passenger motor ships of less than 24 meters (m) and any propulsion power operating within coastal and offshore limits; passenger and non-passenger motor ships under 3000 gross tonnes (GT) of any length and propulsion power operating within restricted limits; or fishing motor ships under 3000 kilowatts (kW) operating in the unlimited area.

A motor ship has diesel main propelling machinery. The chief engineer is the senior engineer officer responsible for the ship’s mechanical propulsion and for the operation and maintenance of its mechanical and electrical installations.

small vessel 24m

With this certificate, you can perform the functions and duties of chief engineer on - passenger and non-passenger motor ships of less than 24m


MNZ Marine Engineer MEC 4 General Requirements

  • Medically fit and have good eyesight
  • Good character and a fit and proper person
  • Have met the requirements for a MEC 5 or MEC 6 certificate of competency or equivalent, or have acceptable shore-based training in mechanical or marine engineering
  • Must meet the minimum sea service requirements
  • Attend and pass a MEC 4 training course
  • Have current certificates for the required ancillary proficiencies
  • Pass Maritime NZ’s final exam.

MNZ Marine Engineer MEC 4 Requirements

MNZ Marine Engineer MEC 4 Prior Certification Requirements

  • Depending on the option you choose, you must have either acceptable shore-based training in mechanical or marine engineering, or a MEC 5 or MEC 6 certificate of competency.
  • Examples of acceptable shore-based mechanical or marine engineering training are an apprenticeship as a fitter/turner or heavy diesel mechanic, or an equivalent National Certificate in Mechanical Engineering. Training in other engineering fields, such as chemical or electrical engineering, is not acceptable.

MNZ Marine Engineer MEC 4 Sea Service Requirements

  • You must complete one of the following options for sea service as an engineer in the engine department of ships with main propulsion machinery of 250kW or more while operating outside restricted limits:
  • Option 1: 12 months of approved sea service while holding a MEC 5 certificate or equivalent
  • Option 2: 12 months of approved sea service, with acceptable shore-based training in mechanical or marine engineering
  • Option 3: 24 months of approved sea service while holding a valid MEC 6 certificate or equivalent
  • Note: From 4 March 2023, sea service requirements for renewal of MEC 4 certificates will increase to twelve months in the previous five years.

MNZ Marine Engineer MEC 4 Training and Exam Requirements

  • The approved training for MEC 4 is the New Zealand Diploma in Marine Engineering (Level 6) - 300 credits. If using Option 2 for sea service, you must have acceptable shore based training in Mechanical Engineering.
  • You must pass a final examination (currently an oral examination) by an Maritime NZ-approved examiner. This will usually be arranged by your training provider. Your results will be sent to Maritime NZ.

MNZ Marine Engineer MEC 4 Ancillary Certificates 

mnz mec4 ancillary certificates
Table: Maritime NZ Marine Engineer Class 4 (MEC4) Ancillary Certificate Requirements - Credits: MNZ

Disclaimer: For general information purpose - please check with Maritime NZ for the latest requirements and accurate info

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