| | Free Resource | How to Use | | :--- | :--- | :--- | | Stability | USCG Sample Exam (PDF) | Print out and recalculate each problem manually. | | Electrical | All About Circuits (website) | Focus on AC/DC motors and switchboard safety. | | Cargo Work | Cargo Handling (IMO e-Reader free) | Download IMO model course 1.22 free sample. | | Firefighting | NFPA 1005 free study guide | Practice scenario-based questions daily. |