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2ND MATE EXAM ORAL QUESTIONS AND ANSWERS - LATEST QUESTIONS | Page 90
Q. 892) 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. 893) Quote rule 19 , rule 37 and annex 4
X
1> a gun or other explosive fired
2>a cont sounding of fog signal
3>rockets or shells
4> n.c. flag
5>mayday
6> sos
7> ball, square ,ball
8> flames, smoke signal, raising lowering of arms
Q. 894) What is squat ? how will you reduce effect of squat ?
X
The Change in ships trim when being at motion or being stationary is called squat. The Squat is mainly experienced over in shallow waters it increases with square of the speed of the ship in order to reduce squat ship speed has to be reduced squat is calculated by the formulae
squat= V(square)/100*Cb
Squat is a bodily sinkage of a ship due to its movement through the water and is depend on speed, ship form, and the underwater clearance.
The overall decrease in the underkeel clearance fwd. and aft is called squat.
TO ELIMINATE SQUAT;
reduce speed,
Sufficiant UKC is to be kept to avoid SQUAT.
Q. 895) What is cargo securing manual ? contents , diff b / w cargo securingmanual and lashing manual ?
XQ. 896) What is raster charts , vectors charts , which is better and why
XVector charts are more advantageous than raster chart because vector chart enables user to select many alarms, such as depth alarms, various modes such as head up and north up, Zooming facility, Add or remove the data required.
as it is in vector charts info stored in layers so u can select the reqd info which v cant do on vecor charts .
Q. 897) What is osc wrt iamsar manual ? what is the duties of osc ? what is mrcc , mcc , lut
X
OSC - On scene Coordinator
MRCC - Maritime Rescue Coordination Center.
MCC - Mission coordination center
LUT - Local User Terminal
about duties of OSC refer IAMSAR vol3
Q. 898) 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. 899) What is phasing and ranging wrt echo sounder
XPhasing:
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
PHASING:phasing is a method in echo sounder to determine the depth of water where the speed of stylus changed but scale is constant
Q. 900) 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.
