SHIP CO AUG
2013
WHAT IS
TYPE B-60 VESSEL??
)A vessel
is constructed with a steel hull and an aluminum superstructure. Which
statement is TRUE?
A) The aluminum will provide greater resistance
to the spread of fire by conduction.
B)
The aluminum structure is usually attached to a steel coaming by a
method that insulates the two metals.
C) If the superstructure is stressed, an
aluminum structure requires additional expansion joints to prevent fracture.
D) The steel at the area of the
aluminum-to-steel connection must be closely checked for galvanic corrosion
Find TPC
when offset of water plane is as follows:
Station AP 2 3 4 5 FP
??Breadth (m) 0.9, 1.5, 2.1, 1.6, 0.9, 0.1
Length of water plane is 15 meters.
a) 0.2 b) 0.3 c) 0.4 d)0.5
2) What
does D5 mean in shell plating?
Ans:
Fourth strake from keel & fifth shell from aft
) Hull
plating strakes are generally numbered as
Ans:
from keel to deck alphabetically up & aft to forward numerically up
Length=150m,
Breadth=30m , draught=10m , Cb=0.84 , Cm=0.92 . A continuous 30m length is
added at midship section.Calculate new Cb ______ and Cm _____
a) 0.925
b) 0.9
c) 0.875
d) .85
Find
Cwp& TPC. Length = 14m
Station
AP1 2
3 4 FP
Breadth
(m) 1.0 1.44 1.55
1.33 0.89 0.2
a) 0.56
b) 0.34
c) 0.43
d) 0.65
dry Peak
tank is tested by (its an dry peak tank)
a) hose test
b) Filled upto load waterline
c) 2.44m
above….
d) none
In- water
survey in lieu of a one of the two docking surveys in a 5-year period may be
accepted when:
A.
A.
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Air pipes
in tanks are generally located:
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.What is the relation between …Permeability, Relative Density and
Stowage Factory?
WHAT IS RELATION BETWEEN TPC BRACKISH WATER AND TPC SEAWATER?
)
Purpose of bulbous bow
Ans: to
improve propulsion efficiency
) Plates
used to connect stern frames to flat plate keel are called
a) shoe plate
b) coffin plate
c) stealer plate
d) boss plate
.Better freeing arrangements on tanker decks inform of open rails for 50% of length are provided:
A. To ensure no seawater gets into the tanks.
B. Because tankers have less freeboard.
C. Both A and B
D. None of the above
Relation between CB, CP and CM is
A. C_P= C_B* C_M;
B. C_M= C_P* C_B;
C. C_M* C_P* C_B=1;
D. C_B= C_P* C_M;
A. C_P= C_B* C_M;
B. C_M= C_P* C_B;
C. C_M* C_P* C_B=1;
D. C_B= C_P* C_M;
The ship???s model estimates the
A.
Hull Frictional Resistance
B.
Hull Wave Making Resistance
C.
All of above
D.
None of above
A.
Hull Frictional Resistance
B.
Hull Wave Making Resistance
C.
All of above
D.
None of above
Wake is defined as
A. w= (PN- V_S)/V_S ;
B. w= (PN- V_a)/PN; (its nothing but a real slip)
C. w= (PN- V_S)/PN;
D. w= (PN- V_a)/V_a
A. w= (PN- V_S)/V_S ;
B. w= (PN- V_a)/PN; (its nothing but a real slip)
C. w= (PN- V_S)/PN;
D. w= (PN- V_a)/V_a
No port holes are allowed to be fitted below _% of the
ships ____ or ______ mm whichever is greater, above the load water line.
a) 1, length, 300mm
b) 2.5, breadth , 500mm
c) 3.5, depth,600mm
d) 4,summerdraft, 760mm
a) 1, length, 300mm
b) 2.5, breadth , 500mm
c) 3.5, depth,600mm
d) 4,summerdraft, 760mm
Table
1
|
Station
|
AP
|
1
|
2
|
3
|
4
|
5
|
FP
|
??
Breadths
|
2.5
|
4.73
|
5.88
|
6.0
|
5.09
|
3.11
|
0.0
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Table
2
|
Station
|
AP
|
-1
|
-2
|
-3
|
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|
??
Breadths
|
2.5
|
1.88
|
1.25
|
0.63
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The tables
1 and 2 of a vessel are ?? breadths of water plane between perpendiculars and
appendage respectively. The lengths between perpendiculars and appendages are
60m and 7.5m respectively. Find the LCF of the water plane from mid ship.
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The
surface of each blade of propeller when viewed from aft is known as the
__________________
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Plates
used to connect stern frames to flat plate keel are called:
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Thickness
of strakes of bottom plating is increased in which of the following regions
of the ship?
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Panting arrangements are usually fitted up to
__________ percent of ship???s length abaft the stem.
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Apparent slip is defined as
A. s= (PN-
V_S)/V_S ;
B. s= (PN-
V_a)/PN;
C. s= (PN- V_S)/PN;
D. s= (PN-
V_a)/V_a ;
4. Most
Efficient Pre-Painting Methods…Pickling, Blast
cleaning, flame Cleaning, Wire Brushing?
9. Location of
Collision Bulkhead? 5-8 % Length of the Ship!
15. Taylor’s Wake Fraction Formula…. ((V-Va)/ V)!
15) types of modern rudder
a) single plate streamline
b) double plate
c)single plate
d) none of above
a) single plate streamline
b) double plate
c)single plate
d) none of above
The
cyclic angular motion of a ship about the ford ???aft axis under the action
of waves is known as:
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