, Training for Mariners. The First with Online Study for the Maritime Industry. Multiple Choice Quizzes with Illustrations for United States Coast Guard Exam Preparation Assistance.       


Click Here to Begin Preparing for Your License in the Online Study.


The subjects listed below are currently available for testing in the new online study room and are available for download to your computer. Click on subject below for details.

Engineering Examination Questions

All Engine Room Questions

Engine Room Electrical         

Engine Room General          

Engine Room Safety            

Engine Room Steam            

Engine Room Motor   

QMED Oiler          

Deck Examination Questions

Master 25/50/100 Ton

Operator Uninspected Passenger Vessel

All Deck Questions

Able Seaman Questions

Advanced Subjects, Unlimited Oceans Master, Mate

Rules of the Road  

Aids to Navigation  Glossary Included

Breathing Apparatus

Cargo Equipment 

Cargo Stowage

Charts and Publications 

Chemical Testing

Right Whales

Damage Control  

Deck Engineering

Deck Safety

Emergency Procedures 

FCC Exam Questions

Fire Fighting Glossary Included 

First Aid  


Great Lakes

Hazardous Cargo

Inert Gas

Inland Navigation  

Instruments and Accessories



Liquid Cargo and Bunkering

Marine Radio Operator 

Meteorology  "Glossary Included" 

Mobile Offshore Drilling Unit

New Revised Questions

Celestial Navigation

Navigational Procedures

Pollution Control and Prevention

Rules and Regulations

Plotting/Navigational Problems


Survival Craft

Seamanship   Glossary Included

Sailing Vessels  

Ship Handling 

Ships Construction Glossary Included  

Ships Business


Stability and Trim Glossary Included 


Tides and Currents Glossary Included 



Common Knots

Radar Plotting



Qualified Member of the Engineering Department, QMED

A Free Install of SeaSources App is available for Android Here. You must be a member of the online study to log in to the app.

IOS Version of App Coming Soon.


 Listed below is a table of contents of the questions on this subject as they appear in the new online study. Click on the "Enter Online Study" link above to begin preparing for your exam.

From the pull down menu in the online study select from the following topics:

    • Exam Code_QMED05_Machinist_Pumpman
    • Exam Code_QMED04_Fireman_Watertender
    • Exam Code_QMED03_Oiler
    • Exam Code_QMED02_Electrician_Refrigerating Engineer
    • Exam Code_QMED01_Junior Engineer

  If you are studying for a United States Coast Guard Engineering License exam which includes these modules, you should  work through these questions until you are scoring 80% or better on them.

List of subjects required: (Click Here to See)

  QMED is an abbreviation for Qualified Member of the Engineering Department.  There are a number of different "QMED ratings."  The most common for both steam and motor (i.e., diesel propelled) ships is the "Oiler" rating.  Many older steam vessels also require the "Fire­man/Watertender" rating.  Tank­ships require "Pumpman," and vessels with electrical cargo gear carry one or more crewmembers with an "Electricians" rating.  Additional ratings include "Refrigeration Engineer," "Deck Engineer," "Machinist," and the "Junior Engineer."  If you obtain all of these ratings you may obtain a rating of "QMED - All Ratings."

   A special QMED rating was created for diesel pow­ered off­shore supply vessels working in the offshore oil in­dustry and is called Oiler (OSV).  It is only valid on off­shore supply vessels and not on vessels such as diesel ferries.  Two additional ratings were created for modern power plants with varying degrees of automa­tion.  These ratings are the "Engineman" and the "Deck Engine Mechanic."  These two ratings do not require additional testing after you obtain the required ratings, experience, and training specified in Coast Guard regulations.

  The test required for any rating is composed of two modules (i.e., parts).  The first module is called "QMED - General."  You must pass this module before you can take the module for the specific rating (or ratings) you desire.





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Copyright 2000 by All rights reserved.
Revised: 04 Jul 2017 10:42:38 -0500 

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Email: Captain Steve 


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For details on license requirements, application forms,  licensing fees, and testing locations, visit the United States Coast Guard / National Maritime Centers web site and look under Mariner's information center. The questions used in the online study are once again available to the public in PDF format from the NMC link above. The illustrations are not yet available for some of these questions.

Vessel Nomenclature  

View Screenshots of "TesTTaker" Software  

View Screenshots/Tutorial of Online Study

View comments from SeaSources Members 

See also:

SeaSources online Celestial Navigation Course 

MARYLAND NAUTICAL  Great source for practice charts and study guides


National Oceanic & Atmospheric Administration (NOAA)

The Navigation Center

Chart No. 1 Nautical Chart Symbols Abbreviations and Terms

Bluewater Books and Charts 

Search CFR'S Online

Additional Online Testing Services for School Administrators

Required Subjects for all Deck Licenses

Required Subjects for all Engineering Licenses

Required Subjects for Mobile Offshore Drilling Units, MODU.

Sea Service Requirements for Coast Guard Licenses