Subelement F: Maritime Safety Information (M.S.I.)— Topic :
Question 37F4
Element 7R (GMDSS-RO)Which of these cannot happen when a paper model NAVTEX receiver runs out of paper?
Explanation
A NAVTEX receiver is a specialized device designed solely for receiving Maritime Safety Information (MSI) via terrestrial radio broadcasts using narrow-band direct-printing (NBDP) telegraphy. SafetyNET™ is an entirely separate, satellite-based system for broadcasting MSI, utilizing different technology (e.g., Inmarsat-C terminals). A NAVTEX receiver has no inherent capability to receive SafetyNET™ messages, nor can it automatically switch between these two distinct communication systems. They operate on different principles and require different receiving equipment. Therefore, a NAVTEX receiver running out of paper cannot automatically switch to SafetyNET™.
Options A, B, and C describe realistic outcomes for a paper-based NAVTEX receiver: it will be unable to print messages (A, C), effectively causing broadcasts to be missed, and many electronic devices, especially safety-critical ones, are designed to alert the user with audible or visual alarms (B) when they cannot perform their primary function due to a consumable running out.
Related Questions
37F2 When do NAVTEX broadcasts typically achieve maximum transmitting range?37F3 What should a GMDSS Radio Operator do if a NAVTEX warning message is received but it contains too many errors to be usable?37F5 Which of the following is the primary frequency that is used exclusively for NAVTEX broadcasts internationally?37F6 What is the transmitting range of most NAVTEX stations?38F1 How is a NAVTEX receiver programmed to reject certain messages?