ORAL
QUESTIONSADD YOUR
QUESTIONS
2ND MATE EXAM ORAL QUESTIONS AND ANSWERS BY CAPT-CHANDRA - LATEST QUESTIONS
Q. 1) What is phasing and ranging wrt echo sounder
X
PHASING:phasing is a method in echo sounder to determine the depth of water where the speed of stylus changed but scale is constant
Phasing:
Phasing is a method used in echo sounder to determine depth of the sea bottom. In this method the speed of the stylus is kept constant and the range scale is changed from 0-100 mtrs , 100-200 mtrs , 200-300 mtrs and so on. It is important that the echo sounder range changed and regularly checked.
Ranging:
Ranging is technique were the scale of the echo sounder is kept constant and the stylus is varied according to the depth scale chose. E.g.- 0-100, 0-200, 0-300 mtrs ans so on
Q. 2) Marpol annex 4 and 5
X
Annex IV Regulations for the Prevention of Pollution by Sewage from Ships
Annex V Regulations for the Prevention of Pollution by Garbage from Ships
Q. 3) What is barograph , barogram ? what does curved lines in barogram indicate ? what enteries are to be made on barogram ?
X
barograph is a instrument which record the change in atm press. onboard ship.
for more detail read met book.
barograph is aneroid berometerwhich measuresd contonuous record of pressure on a paper chart,the barograph has continuous trace on the chart called barogram. the curved line indicate utc are two hor interval.after completing barogram entries regarding lat,long,dates,comparison with barometer are to be filled and it is kept along with the weather log books
Q. 4) Fog signal for vessel aground , if more than 100 mts in length
X
three seperate and distinct strokes ring the bell rapidly for about 5seconds in fore part of the vsl and three seperate and distinct strokes and gong shall be sounded rapidly for about 5second in the after part of the vsl and three seperate and distinct strokes.
Q. 5) What is cargo securing manual ? contents , diff b / w cargo securingmanual and lashing manual ?
XQ. 6) Ur vessel is in TSS , CBD , you see a pd vessel on your port bow , take action
XRule no:18 says clearly that it does not apply in TSS,NARROW CHANNEL,OVER TAKING.I'll alert him with 5 rapid and short blast and if further Risk of collision exist I'll take action as per Rule 2&8
cbd means her draft is restricted by the available depth and width of the nav. water.she cant alter the co she is following. so, reduce speed,call the other vsl on vhf,inform master,inform vts
Q. 7) What is wig craft , what is surface effect action
XPrinciple
A wing generates lift, in part, due to the difference in air pressure gradients on the wing surfaces: both upper and lower. During normal flight, the upper wing surface experiences reduced static air pressure and the lower surface comparatively higher static pressure. In normal flight, these air pressure differences also accelerate the mass of air downwards balancing momentum. However kinetic energy is proportional to the square of the velocity so designers aim to minimize the accelerated air velocities to reduce wasted energy in both the downward mass acceleration and wingtip vortices. Flying close to a surface increases air pressure on the lower wing surface (the ram or cushion effect) and decreases air acceleration so the ground effect improves the aircraft lift to drag ratios in two ways. Momentum is still balanced because the air pressure beneath the wing is pressing on the underlying surface—the water or flat land.
Q. 8) Fire in cargo hold ? you have to release co2 what pecautions u'll take
XIn case of personnel in working in the cargo hold, pls evacuate immediately after hearing the audible alarm n report to the designated mustr station.
close the ventialtion to the hold
close the hatches
release the CO2
Q. 10) What is pssa ? example
X
Particularly Sensitive Sea Area
(PSSA) is an area that needs
special protection through action
by IMO because of its
significance for recognized
ecological or socio-economic or
scientific reasons and which may
be vulnerable to damage by
international maritime activities.
The criteria for the identification
of particularly sensitive sea areas
and the criteria for the
designation of special areas are
not mutually exclusive. In many
cases a Particularly Sensitive Sea
Area may be identified within a
Special Area and vice versa.
