International conventions’’ test questions on the subject 091I

The shape is not twisted, and the diameter is 8 mm
309)
How many minutes should an automatic smoke detector work in rescue circles?
In calm water for at least 15 minutes
15 min
310)
For how many hours should the signal light of the rescue ring be on?
2 hours and more
311)
For how many hours should a lifebuoy should hold a load of 14.5 kg in fresh water?
24 hours
312)
What should be the minimum outer and inner diameters of lifebuoys?
Outer 800mm
inner 400mm
313)
What is the "rescue layer" of the lifebuoy and what should be its thickness?
To catch people in the water. At least 9.5 m.m
314)
What is the minimum weight of a lifering? Life bouy
2.5 kg
315)
In what cases are visual distress signals used?
The ship is in trouble
316)
Which of the following does not apply to visual distress warning devices?
radiotelephone
317)
Which of the following does not belong to personal life-saving and protective equipment?
Life boat, life raft, rescue boat
318)
Which of the following applies to collective rescue vehicles?
Life boat, life raft, rescue boat
319)
According to the requirements of the SOLAS Convention, when the composition of the crew on cargo ships changes by more than 25%, how long must the staff meeting be held?
24 hours
320)
According to the requirements of the SOLAS Convention, how long must a passenger drill to be held after the departure of a passenger ship?
24 hours
321)
To which category of an accident does a ship sink or collapse belong?
destroying of vessel
322)
What type of marine accident ranks first in terms of severity of consequences?
Fire
323)
What percentage of total accidents are caused by human factors or occurs as a result of subjective causes?
75- 80 percent
324)
What is the percentage of accidents caused by force majeure?
10 precent
325)
What percentage of the total accidents are caused by technical failures of ship's facilities and unexpected shutdowns of ship's facilities
10-15 percent
326)
What is the main factor in the occurrence of marine accidents?
Human factor
327)
According to statistics, what percentage of marine accidents are caused by the human factor?
75-80 percent
328)
According to the SOLAS-74 convention, how often should fire drills and boat alarms be carried out on cargo ships?
Once a month
Ayda 1 defe
329)
What should you do when 7 short and 1 long loud signal are given?