, Training for Mariners. The First with Online Study for the Maritime Industry.

  Welcome to Established in 1996, we are the ultimate source for online USCG exam preparation assistance. provides free online exam preparation along with downloadable studyguides and standalone software that allows you to continue your studies without an internet connection.


Prepare for or supplement your studies for your USCG license exam here.

Click here to create an account and enter SeaSources new online study.


Hi! We have a new website! It's phone / tablet friendly and speedier. Please visit it today! 

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

Latest NMC / USCG 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


The Online Study database is updated annually now as soon as the NMC releases their sample exams. Sample exams are also posted in the online study which can be accessed from the link above.

The questions and illustrations posted in the online study are current and constantly being updated.

December 20, 2019. So far a total of 428 new deck questions have been added to the online database. They can be found under "New Questions Extracted from NMC Samples" / "New Deck Questions" in the pull down menu of the online study.

December 1, 2019. More new deck questions have been added under, "New Questions Extracted from NMC Samples" / Deck Questions. In the pull down menu of the online study.

November 23, 2019. More sample questions added today under the Engine Ratings category. Can be found in the pull down menu as follows: "NMC Sample Examinations", Engineer Rating 2019, QMED01 Junior Engineer Q800-801, QMED02 Electrician-Refrigerating Engineer Q802-Q803, QMED03 Oiler Q804-Q805.

November 14, 2019. 137 new questions have been added to the online study from the samples so far. They can be found under "New Questions Extracted from NMC Samples" , Engine Officer 8_19 in the pull down menu. Be sure to check these out.

November 1, 2019. Sample exams for DDE01 DDE,Unlimited HP Q620-Q625 and DDE04 DDE,1000_4000 HP Q630-Q634 were just added to the online study. Looks like some new questions and new illustrations in these samples.

October 27, 2019. Just added the latest NMC sample questions for 3AE01 Third Assistant Engineer, Unlimited Q531-Q538 to the online study. More to follow. If you are studying for any Engine Room License I strongly suggest that you look through these samples under "NMC Sample Examinations" Unlimited Engineer Officers 8_19.

September 29, 2019. Finished processing the Engine Room illustrations. The final count is 315 updated graphics added to the online study. Now to start the long process of the new questions.

September 26, 2019. As of today I have now added a total of 228 updated illustrations to the Engine Room categories. More to come.

September 12, 2019. The 2019 sample questions have been posted by the NMC. Starting the long process of assimilating these into our system. Looks at first glance like I will be finding some all new questions and illustrations to add. I will keep everyone posted as to the progress.

It true that the prior to question databank is no longer in use and deck and engine room will now only need to study the 'as of' questions? '' Starting in March of 2019.

USCG Deck Question Databank for Prior to March 14, 2014 Regulations.

USCG Deck Question Databank for as of March 14, 2014 Regulations.

The following are in the Online Study

USCG Engine Room Question Databank for prior to March 14, 2014 Regulations.

USCG Engine Room Question Databank for as of March 14, 2014 Regulations.


   No pop ups,  Banners,  Spam,  Garbage, Advertisements, Hidden Gimmicks or any proverbial "Fine Print" to deal with. What you see is what you get. Just down-to-earth information and this site is dedicated to keeping it that way.

   The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of, Training for Mariners, is a registered Trademark

Copyright 2000 by All rights reserved.
Revised: 14 Feb 2021 08:39:14 -0500 

Contact Phone: 207-629-7004

Email: Captain Steve

Home Page 

Download Illustrations

Practice Final Exams

SeaSources Celestial Navigation Training Videos 

Exam Question Downloads  


Download TesTTaker Software  


Free Sample Downloads  


Maritime Links   


Member Comments  


Contact SeaSources  


Boat Jobs Available 






style="color: black">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

Open Book Renewals

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