GMDSS Sub-Forum


#21

So why do they send weather warnings to DSC instead of NAVTEX? Are there gaps in NAVTEX availability or do the NAVTEX receivers lack alarms?


#22

[QUOTE=rbc;139803]So why do they send weather warnings to DSC instead of NAVTEX? Are there gaps in NAVTEX availability or do the NAVTEX receivers lack alarms?[/QUOTE]

they do send weather warnings by NAVTEX and the receivers do have alarms but somehow I don’t see the receivers aboard ship like I used to…maybe they are covered with a box or something?

That’s the best thing to do with a GMDSS station as well. A big heavily insulated box from inside of which no annoying sound can be heard. Either that or a small quantity of very high explosives does wonders!


#23

Safety net and navtex can both be received by your GMDSS stations sat-C terminal. Safety net is for the areas not covered by navtex.
DSC is a function if the GMDSS equipment.


#24

It sounds like this is partly a workload problem, where the deck officer on watch has to deal with GMDSS (INMARSAT-C, DSC, etc.) equipment and evaluate alarms for applicability. In the early 90’s, when I was on a Navy Submarine, the radioman of the watch would absorb part of this work, only calling on the officer of the deck when it was really a priority. With the demise of shipboard radio officers, it would seem this work has fallen mostly to the deck officer on watch. Is that part of it?


#25

[QUOTE=rbc;139887]It sounds like this is partly a workload problem, [/QUOTE]

no, the problem is that 99% everything that is generated by a GMDSS station is garbage

if one were to read every single printout from a Sat-C your mind would go into meltdown from the useless superfluousness of all the information generated endlessly and repeatedly


#26

So who’s publishing the noise, coast guards, other ships?


#27

Everyone is. All day long.


#28

[QUOTE=Fla-cracker;139761]I learned in GMDSS class that Inmarsat A is one if the fastest growing communication systems in use on the planet today. In 2014. The words archaic and superfluous come to mind.[/QUOTE]
Service was turned off in 2007, whose school was that?


#29

Are the messages being sent to all ships in a NAVAREA via SAT-C?


#30

Read this.
http://www.inmarsat.com/services/safety/inmarsat-c/


#31

A few points. Communications technology killed the radio operator just like video killed the radio star. The GMDSS system is a one size fits all answer, designed by an international governmental regulatory body of bureaucrats who have never seen a ship or salt water. The GMDSS suite on my current ship was built around 1998. Like someone else posted, that 100 years in tech-life. Good Lord, I am typing this on a five year old, hopelessly outdated laptop!! 1998?? I didn’t even own a friggin’ cell phone then. The system is nothing but a money maker for governmental agencies and contractors. That is all.


#32

It does sound like message originators need to make more use of user-defined circular and rectangular address areas, instead of spamming an entire NAVAREA or METAREA. I wonder how many messages with urgency and distress priority, really deserve that priority.


#33

[QUOTE=rbc;139919]It does sound like message originators need to make more use of user-defined circular and rectangular address areas, instead of spamming an entire NAVAREA or METAREA. I wonder how many messages with urgency and distress priority, really deserve that priority.[/QUOTE]

but the message originators don’t give a shit that they are in effect overloading the system with garbage…it’s not their tractor feed paper and printer ribbon to pay for or alarms they have to silence repeatedly all day.

I used to turn off the Sat C in the GMDSS station except now you can’t because the LIRT is run through it and if it is off you are in a world of not good when you come into port.


#34

Ours uses floppy disks…you know how hard it is to find floppy disks now?


#35

So does ours. Floppy discs. give me a break.


#36

It was in the text book for GMDSS.


#37

I have both GMDSS A User’s Handbook (2009) and GMDSS A study guide for the Global Maritime Distress Safety System (2007). Both have removed Inmarsat-A.


#38

[QUOTE=rbc;140102]I have both GMDSS A User’s Handbook (2009) and GMDSS A study guide for the Global Maritime Distress Safety System (2007). Both have removed Inmarsat-A.[/QUOTE]

MAN! You just never give up…do you?

Tell us all what your inside angle is to why you are so into GMDSS…you an instructor making a good living off of torturing all the rest of us unwashed ones?


#39

[QUOTE=New3M;139963]Ours uses floppy disks…you know how hard it is to find floppy disks now?[/QUOTE]

four little letters my friend…

e…B…a…y…


#40

I was a Navy electronics technician, trained on radio, radar and navigation equipment. I used to be a Navy instructor in the same. These days I’m an amateur radio operator when I’m not working in cloud computing. I’ll be operating some HF gear in the morning.

GMDSS is interesting to me because of that I suppose. I’m going to test out for the FCC licenses for GROL+RADAR and GMDSS Operator/Maintainer. I don’t know what I’ll do with them yet. I haven’t been to sea since 1990. We’ll see.