GMDSS Flashcards

1
Q

What is Navtex ?

A

primary equipment as part of GMDSS to receive maritimes Safety Information
- 518khz

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2
Q

What frequency does NAVTEX operate on ?

A

518 KHZ - English
490 KHZ - regional language

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3
Q

What are the 4 messages on navtext that CANNOT be deselected?

A

A - Navigational Warnings
B - Meteorological Warnings
D - Search and rescue information
L- Additional navigational warnings

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4
Q

What are the three main search patterns?

A

For witnessed MOB:

Expanding Square search - good over a small search area
Sector Search -
How would you know / determine your search leg lengths?
What are you searching for? Person? Liferaft?
What are the weather conditions? Wave height, visibility?
Look at table inside IAMSAR - “uncorrected sweep widths for merchant vessels”

For unwitnessed MOB:

Creeping line search - in collaberation with yachts tenders? While waiting for SAR helicopter / professional help

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5
Q

What are your actions in the event of a MOB?

A

Call the master
Engage Hand steering
Turn towards casualty
Mark the position (GPS MOB button on all equipment)
Release MOB buoy / lifering with smoke
Sound General Alarm / Sound OSCAR and Raise flag (3 long blasts)
Make decision regarding manoeuvre (Williamson, Anderson Sharnov)
Lookouts posted with binoculars + instructions to keep eyes on MOB
Rescue boat team to muster and brief
Send out distress message

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6
Q

How long will your reserve power sources last?

A

Emergency generator 18 hours
Batteries only 6 hours
Both will power steering, bridge equipment, fire pump and bilge pumps etc

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7
Q

What to do when receiving a distress message MF in mid Atlantic ?

A

Tune to 2182 listen for comms and immediately acknowledge, then establish voice communication

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8
Q

You receive distress message in area A1 VHF what to do ?

A

listen to ch 16 for coms and defer for short time to let Coast station answer

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9
Q

Monthly tests

A
  • TEST EPIRB self test, batterie, exp date, condition
  • TEST SART against radar, batterie check etc. make sure to inform the port or ships in area
  • test survival craft handheld VHF’s, check battery is in good condition with seal unbroken
  • Inspect battery system, boxes, framework, connections, SG
  • on/off load test batterie
  • Inspect antennas and isolators for damage
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10
Q

Weekly Test

A
  • Run emergency power supply if other than battery (generator)
  • test of DSC equipment by test call to a CS (VHF/MF/HF)
  • hand held survival radios check
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11
Q

Daily tests

A
  • Test DSC internally
  • Check battery voltage (must be reading 27V)
  • internal test of Sat C
  • internal test NAVTEX
  • Check printers have adequate supply of paper and ink
  • radio log
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