CG3 – Cargo 3

Cargo 3

This exam consists of a written test comprising descriptive questions and requires the ability to draw vector diagrams of loads on cargo gear. The exam is three hours in duration. To grasp the required concepts in cargo work, you must have a strong foundation in ship stability and construction.

Cargo level 3 requires you to know detailed aspects about the various types of cargo and specific carriage requirements and safety precautions for individual cargoes. You must be aware of the various behaviours of these cargoes in terms of operating a safe and stable vessel. The exam is for prospective near coastal masters and master mariners, as such it requires in depth knowledge and expertise on all aspects of cargo operations.

You must be able to perform loading and discharging calculations: safe working loads (SWL), stowage factor, broken stowage, etc. Compared to Cargo level 2, this exam has greater emphasis on chemical and oil tankers and their operations. Related calculations and extensive knowledge of these cargoes and the vessels that carry them is required.

To see a full list and description of topics covered by the exam please refer to the exam’s Syllabus (Page 88, Section 5.14).


Recommended Reading:

Cargo Work: For Marine Operations by House is a solid publication. Everything is explained in a straight forward manner. The information encompasses the important subjects that will be covered on the exam. There are practice problems with solutions, diagrams, terminology and explanations.

Marine Cargo Operations a guide to stowage by Meurn is another accessible text that covers most of the topics on this exam. It covers in depth the stability and loading calculations you will need to know for the exam. This text covers much of the same material as Cargo Work: for marine operations and includes some diagrams and pictures relating to the pertinent calculations.

ISGOTT (International safety guide for oil tankers and terminals) The standard reference work on the safe operation of oil tankers and the terminals they serve.  The syllabus states that the exam requires general knowledge of the contents and application of ISGOTT relating to the chemical oil and bulk liquid cargo questions.

The following codes and regulations will be available for use during the exam as open book resources:

Some of the titles listed (marked with *) are Acts or Regulations that have been Repealed. As they are still on the syllabus we thought it best to keep them in our list. We recommend you speak to your examiner to clarify any discrepancies.

  1. Canadian Code of Safe Practice for ships carrying timber deck cargoes * (for applicable regulations see Timber Code);
  2. Cargo, Fumigation and Tackle Regulations;
  3. International Maritime Dangerous Goods (IMDG) Code;
  4. Transportation of Dangerous Goods Act;
  5. Transportation of Dangerous Goods Regulations.


You will also need to be familiar with the following codes and regulations as well as some knowledge of publications from the Cargo level 2 examination:

  1. SOLAS Chap VI
  2. International Maritime Solid Bulk Cargoes (IMSBC) Code
  3. The International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (IBC Code)
  4. The International Code for the safe carriage of grain in bulk (International Grain Code)



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