Where Does NBDP Fit in GMDSS and How to Use It ?

Very well explained, as always done Sir. Your contribution is highly appreciated. If I may share/add for the benefit of young navigators: NBDP may also be used to receive Navtex messages by tuning on 518 KHz, in case Navtex is not in working order.

Such a relief, Good Explanation Capt.! I agreed too, Your First Sentence is a catchy one.,like raise your hand if you agreed. indeed NBDP left out at the corner even after your contract one or two touch would be ok.

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Hello, first thank you for your great article, I would like to ask this I'm in East African coast and the only station I know that support NBDP is in Asia, like Shanghai. I tried the 16MHz frequency to connect. But as expected its unable to it say its suspended, is this because I'm too far from the station? I'm trying to find for references as to how far are the theoretical reach of each frequency. Hoping you can enlighten me on this.

Sir, I want you to know that I have read your entire blog and emerged as a great fan of your writing. Your write-ups are so transparent, detailed and most importantly, in layman language, making shipping knowledge understandable to even schoolgoers. Thank You for your efforts in educating so many people. Sir, a small request from me is that you write on all the functions of INMARSAT-C. I know many people who face huge difficulties in this field, including myself, and I would be ever so grateful to you if you please describe its importance in GMDSS and the process of using it in distress as well as in routine communication.

Very Detail of explanation and easy to understand, thaks you so much Capt...

Easy to understand thank you so much

Thank You Soo Much Sir Very Goodly Explain About NBDP & ARQ MODE & FEC MODE ????

Amazing , amazing ! You hear this alot but you need to hear it again, this blog is probably the best online education tool I ever found as an officer in tanker fleet. Just discovered your blog and I spend every day reading for few hours after watch. Capt . I also recommend covering next topics if not covered already, 1) Auto-pilot maintenance and operation /testing 2) magnetic compass adjustment 3) tank cleaning procedures line up / chain of events 4) framo stripping /purging / line blowing 5) fluid behavior in pipes , pressure / better understanding 6) cop pumps operation / stripping 7) vessel IT/ systems explained vsat ,fbb Cisco/ servers.. 8) oxygen resyctiator explained

Short and precise,,,helmed me a lot,,,tnq sir