Visual Communications (Flashing Light)
Completion of this training satisfies the practical signaling examination requirements (Flashing Light) of 46 CFR 11.401(h) and have successfully demonstrated the equivalent of assessment OICNW-4-1A from the National Assessment Guidelines for Table A-II/1 of the STCW Code, as amended. The course is designed to be a training experience which is a combination of instruction and practical guidance in learning Morse code.

Why Thousands of Mariners Choose Sea School?
Each year, over 7,500 students choose Sea School for their maritime training. We offer 30+ USCG-approved courses across in-person, online, and satellite formats, with training available at 6 locations nationwide. Team training is also available on-site or via satellite to meet company needs.
















Completion of this training satisfies the practical signaling examination requirements (Flashing Light) of 46 CFR 11.401(h) and have successfully demonstrated the equivalent of assessment OICNW-4-1A from the National Assessment Guidelines for Table A-II/1 of the STCW Code, as amended. The course is designed to be a training experience which is a combination of instruction and practical guidance in learning Morse code.

Why Thousands of Mariners Choose Sea School?
Each year, over 7,500 students choose Sea School for their maritime training. We offer 30+ USCG-approved courses across in-person, online, and satellite formats, with training available at 6 locations nationwide. Team training is also available on-site or via satellite to meet company needs.
















Real-World Expertise
Excellence starts with a strong foundation. We believe in mastering fundamental skills, building confidence, and ensuring every mariner has the knowledge and expertise needed to succeed in their career.
Flexible Learning Options
True leadership is demonstrated through action. We foster a hands-on approach, where mariners learn by doing and gain real-world experience that prepares them for the challenges of the industry.
Career Advancement
In the maritime world, challenges are inevitable - but so are solutions. We encourage proactive thinking, problem-solving, and the courage to take initiative.
Industry-Recognized Certifications
We never settle for mediocrity. Whether in training, leadership, or problem-solving, we strive for the highest standards in everything we do.
A Strong Community & Industry Network
Success in the maritime industry requires a strong work ethic. We embrace a roll-up-your-sleeves mentality, knowing that real growth comes from effort and persistence.
Confidence & Leadership Development
Ttrue professionals must be ready to adapt. We believe in staying agile, embracing change, and continuously expanding our skills to meet new challenges.
We’ve developed comprehensive, engaging, and practical curriculum to set you up for success on the water
While the curriculum represented on the Sea School website is a general layout of course information, it is not the exact order in which lessons are taught.
- Demonstrating knowledge of and proficiency in the use of Pub. No. 102 International Code of Signals.
- Demonstrating knowledge of and proficiency in the use of Pub. No. 102 International Code of Signals.
A Simple 3-Step Process to Get Certified and Start Your Maritime Career
Choose Your Course
Pick the course that fits your experience level and sea time and select the available format that works for you (in-person, Zoom, or online).
Enroll & Prepare
Register online or at a Sea School location. Ensure you meet eligibility requirements and start reviewing the provided study materials.
Get Certified
After finishing the course, you will need to submit your application to the Coast Guard to receive your Merchant Mariner Credential (MMC).

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Advance your Maritime Career
Visual Communications (Flashing Lights) FAQs
The Visual Communications Flashing Lights course is intended for mariners seeking an original deck license, a raise of grade on an existing license, or an STCW endorsement as an Officer in Charge of a Navigational Watch (OICNW) on vessels of 500 Gross Tonnage or more.
The primary focus of the Visual Communications (Flashing Lights) course is to achieve and demonstrate proficiency in visual signaling using Morse Code (via flashing light) and to gain working knowledge of the International Code of Signals (Pub. 102). This includes transmitting and receiving single-letter signals and the distress signal "SOS."
Your Journey Begins Here – Get Certified & Get on the Water!
Helping thousands of mariners every year, Sea School is a leader in the maritime education space. Whether you are new to the industry or looking to add onto your Merchant Mariner Credential, find the courses right for you at Sea School.







