Search

Tuesday, 13 August 2013

Naval architecture ans ship construction questions and problems


What is the Fresh Water Allowance?
A. ???/5TPC cm;
B. ???/40TPC cm;
C. ???/10TPC cm;
D. ???/20TPC cm

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 ;

Find the 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 t/cm
B. 0.3 t/cm
C. 0.4 t/cm
D. 0.5 t/cm


In- water survey in lieu of a one of the two docking surveys in a 5-year period may be accepted wheIn- water survey in lieu of a one of the two docking surveys in a 5-year period may be accepted when:
A. A suitable high resistance paint is applied to the ship???s underwater hull
 B. The ship is less than 15 years old
 C. The in-water survey provides all the information required by classification society
 D. A part of the ship is on fire

Find CWP and TPC of a vessel whose ??breadths of the water plane as follows:
 Station: AP 1 2 3 4 FP
 ?? Breadths (M) 1.0 1.44 1.55 1.33 0.89 0.2
 Length between perpendiculars is 14 meters.
 Consider the nearest value.
A. 0.56 tonnes/cm
B. 0.34 tonnes/cm
C. 0.43 tonnes/cm
D. 0.65 tonnes/cm

Mark: 4
 Peak tanks are tested by:
 A. Hose test
 B. By filling them with water up to load water line
 C. By filling them with water up to the maximum head which can come on them in practice or 2.44 m above tank crown, whichever is higher

Why the frictional resistance increases when the draft increases?
 A. Dead weight of the vessel increases.
 B. Length of water plane increases.
 C. Wetted surface increases.
 D. Temperature of water reduces as draft increases.

The edge of the propeller which cuts the water first, when the ship is driven ahead is known as ______________
 A. Face                                B. Trailing edge
 C. Leading edge                D. Driving edge


The lower and the upper stools are provided for bulk carriers: -

 A. with plate type of transverse watertight bulkheads and they normally extend athwartship from ship side to ship side
 B. with corrugated type of transverse watertight bulkheads and they normally extend athwartship from ship side to ship side
 C. with plate type of transverse watertight bulkheads and they normally extend athwartship from one side lower hopper to other side lower hopper
 D. with corrugated type of transverse watertight bulkheads and they normally extend athwartship from one side lower hopper to other side lower hopper

The RD solid block of wood is 0.75. All sides are equal to 1.0m. The block is floating in mercury. The RD of mercury is 13.4. What will be weight of a steel block just to submerge the block?
 A. 12.6 tonnes;
 B. 13.5 tonnes;
 C. 14.2 tonnes;
 D. 15.0 tonnes;

Which of the following statements is true?
 A. A transom floor need not have the same depth as cellular double bottoms.
 B. Counter or elliptical sterns are most commonly used in merchant ships.
 C. Cant framing when omitted in a cruiser stern and replaced by a flat plate, forms the transom stern.
 D. Cant framing radiating out like spokes of wheel from transom, forms the transom stern.

Find the TPC of the water plane. Length between perpendiculars is 15 m.
 Station: AP 2 3 4 FP
 ?? breadth (m): 0.6 1.1 1.6 0.9 0.1
A. 0.5 tonnes/cm
B. 0.4 tonnes/cm
C. 0.3 tonnes/cm
D. 0.2 tonnes/cm.


The most common option for propulsion for a medium to large size merchant ship is a:
 A. High speed diesel engine with reduction gear
 B. 4-stroke, Medium Speed diesel engine with reduction gear
 C. 4-stroke, Slow speed diesel engine directly coupled without reduction gear
 D. 2-stroke, Slow speed diesel engine directly coupled without reduction gear

The mass of a ship without cargo, fuel, stores, water, crew etc that a ship carries is known as:
 A. Deadweight
B. Lightweight
 C. Displacement
 D. Tonnage

Find the 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 t/cm
B. 0.3 t/cm
C. 0.4 t/cm
D. 0.5 t/cm

Which of the following must be provided in a shaft tunnel?
 A. A watertight door at the engine room bulkhead.
 B. Escape trunk at the aft end.
 C. A tunnel well for drainage
 D. All of the above

The purpose of providing camber is to:
 A. Improve the appearance of the ship
B. Help drain off water from deck easily
 C. Reduce the volume of water coming on deck
 D. Help drain tanks to bilges

Find CWP and TPC of a vessel whose ??breadths of the water plane as follows:
 Station: AP 1 2 3 4 FP
 ?? Breadths (M) 1.0 1.44 1.55 1.33 0.89 0.2
 Length between perpendiculars is 14 meters.
 Consider the nearest value.
A. 0.56 tonnes/cm
B. 0.34 tonnes/cm
C. 0.43 tonnes/cm
D. 0.65 tonnes/cm

Transverse areas at different stations are given as follows:
 AP         1              3              4              FP         
3.4 m2   4.1 m2   5.8 m2   2.8 m2   1.4 m2
 Length of the vessel is 24m. Find the Displacement of vessel
 A. 360.1 tonnes
 B. 345.2 tonnes
 C. 382.8 tonnes
 D. 350.0 tonnes

Deep tanks are tested by:
 A. Hose test
 B. Filling them with water up to maximum level
 C. Filling them with water up to maximum head, which will come on them, i.e. to the top of the air pipe or 2.45 above the crown of the tank which ever is higher
 D. Filling them with water up to maximum head, which will come on them, i.e. to the top of the air pipe or 2.45 above the crown of the tank which ever is lower.

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

 Table 2
 Station
 AP         -1            -2            -3
 ?? Breadths
 2.5         1.88        1.25        0.63

 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.
 A. 4.87 m towards ford
 B. 4.23 m towards ford
 C. Midship
 D. 4.04 m towards aft

Thickness of strakes of bottom plating is increased in which of the following regions of the ship?
A. Pounding region
 B. Over 40% of ship???s length amidships
 C. Over 40% of ships length forward
 D. Both A and B
1. What is “POSITION 1” according to the LOAD LINE RULE?  Hatchways on exposed free board decks, and exposed super structure decks within forwars 0.25L    kemp pg-80
2. Pitch of the propeller…Definition? Distance moved in 360 Degree Rotation in a Soft Solid Fluid
3. What is the Name of the plate which Joins the STEM to the FLAT PLATE KEEL….Shoe Plate, Coffin Plate, Oxter Plate, Stealer Plate?
4. Most Efficient Pre-Painting Methods…Pickling, Blast cleaning, flame Cleaning, Wire Brushing?
5. In a Shell Expansion Plan…What is “PLATE 5”? i.e. Distance of4th/ 5th plate From the Fft/ Fwd and 4th/ 5th plate from the bottom?
6. What is the relation between…Permeability, Relative Density and Stowage Factor? Formula…like…( x= 1- m* RD), (m* RD-1), (RD* SF) etc…
7. _______ Transverse Watertight Cargo Hold Bulkhead____________ Type of Collision Bulkhead. ( Corrugated & Plate, Swashed & Corrugated, Swashed & plate, Plate & Swashed?
8. What is it seen when a Propeller is seen from the Aft end….Leading edge, Trailing Edge, bow, tail?
9. Location of Collision Bulkhead? 5-8 % Length of the Ship!
10. Frictional Resistance Increases with….Length of the Water plane Area, Wetted Surface Area, Displacement?
11. Definition Of DISPLACEMENT of Ship… Mass of the Displaced Volume Of Water!
12. IDEAL Location of AIR PIPES…At the Lowest Point Of the Tank, At the Filling Connection, At the Highest Point Of the Tank/ or Opposite to the Filling Connection!
13. Cyclic Up & Down Movement of Vessel Along the VERTICAL AXIS….Heaving, yawing, Swaying, pitching?
14. Main Purpose Of Bulbous Bow…To Decrease the Specific Fuel Consumption!
15. Peak Tank Testing...2.44 m above the Highest Water Level, Hose Test,load water level, Air test etc…!
16. Maximum Transverse Spacing in DOUBLE BOTTOM SPACE…2.5 m, 3 m, 3.7 m, 3.8 m?
17. What is The Effect On RESERVE BUOYANCY when the ship is in Fresh Water (for same Displacement)….Increases, Decreases, Remains same?
18. Rise of Floor Aids in…drainage of Water From Tanks, Drainage of water from decks etc…!
19. Breadth… “ AP, 1, 2, 3, 4, FP” and Coordinates… ” 1, 1.44, 1.55, 1.33, 0.89, 0.2”
LBP is 14 then Find TPC? …….0.2, 0.3, 0.5, 0.6 t/cm ?
20. Find Cw and TPC if…Breadth…” AP,1,2,3,4,FP” and Coordinates…” 0.9, 1.5, 2.1, 1.6, 0.9, 0.1” and LBP is 15!
Ans…. 0.56, 0.65, 0.34, 0.43 t/ cm !

20. A barge of length 6.5m, Beam 10.2 m and Draft 4 m in Even Keel Condition. The ship is in water of Relative Density 1.006 t/ Cubic Meter. Find the Bodily Sinkage of the Mean Draft, if the Displacement is Constant….. 0.086, 0.076 etc!

1. Requirement for LOAD LINE REGULATION is known as …Condition requirement, minimum freeboard, minimum load water Line!
2. How to support Stem Bar to radiused Plate? …Breasthook!
3. how to join Stem bar to Keel Plate…Oxter,coffin,Shoe, Stealer paltes?
4. Transverse Framing…how support is given in Engine Room, or Pounding Region…Alternate Framing or Every Framing…fill in the blanks!
5. Transverse Framing is supported by…….Girder and Bracket to ship side, unsupported…etc!
6. D5 plate stands for?
7. What is must in a shaft tunnel…Drainage well, water tight door, escape route to deck!
8. Ship going Forward…which edge of the propeller touches first…Leading/ Trailing* ?
9. Rise of floor Purpose…?
10. why TPC is not same for all drafts?...Waterplane Area is not same for all drafts!
11. GM will change when…? Shifting of weight…Longitudinally, vertically?
13. Extra Strengthening done where... for pounding region+ 40 % of mid ship…!
14. Engine room transverse framing…Every frame, alternate etc!
15. Taylor’s Wake Fraction Formula…. ((Va-V)/ V)!
16. Wetted Surface Area Formula… C. L (BD) ^ 0.5!
  S=c^(delta * L)
17. 5 years dry docking…one Dry docking can be missed… if ABS is given all the necessary information’s about the ship, fire on the ship, ship less than 15 years old, good quality resistant paint in underwater hull.
18. Summer load line Displacement= 15,000 t, TPC= 26.2,ship’s mean draft= 6.2 m Ship is going in Winter Region…what is the New Displacement?
19. Hatch Coaming Minimum height…600, 800, 1000, 1100 mm?
ONLINE CLASS 4 PART B SEPTEMBER 2012
SUBJECT - SHIP CONSTRUCTION
(Long tym Not able to recall everything....hope it will give some idea)

1-4) TPC CLACULATIONS
5) BLOCK COEFFICIENT NUMERICAL
6-7) FORMULA BASED QUESTION VIZ - PRISMATIC COEFFICIENT = RATIO OF ___Cb/Cm____
8) WHAT IS LEFT HAND PROPELLER
9) WHAT WILL HAPPEN ON VOLUMETRIC DIPLACEMENT IF VESSEL SHIFTS FROM FRESH WATER TO SEA WATER . decrease
11) PLATES FORWARD AND STERN FORM INTO ONE PLATE NEAR END KNOWN AS ________ PLATE.. coffin plate
12) IN BULK CARRIER PURPOSE OF HOPPER TANK ? ballasting and stability
13) WHAT IS BULK CARRIER ?
14) IF WE WANT TO INCREASE KG OF SHIP WHAT U WILL U DO LYK-SHIFT WEIGHT UP , DOWN , TRANSVERSE , LONGITUDINAL ETC
15) PURPOSE OF BULBOUS BOW ?
17) IF ER AMIDSHIP MINIMUM NO OF WATER TIGHT BULKHEADS IN ER?  4 every 20m one water tight bulkhead required
18) QUESTION RELATED TO UNDERWATER SURVEY ?
19) QUESTION RELATED TO BULKHEAD ?,
21) QUESTION RELATED TO SHELL EXPANSION ?
22) WHAT IS BLOCK COEFFICIENT OF STANDARD SHIP TO CALCULATE FREEBOARD AS PER LOADLINE
 
1.Definitions of rolling,pitching,yawing,swaying,surging,heaving?
2. Problems on TPC & SIMPSONS of even numbers.i.e.6numbers.
3. If u see the propeller from aft which part do u see? which edge is visible to u?
4. Definitions of coffin plate,stealer plate,shoe plate,oxer plate.
5. Most commonly used stern. transom
6. TPC in brakish water
7. Tabular freeboard depends on
8. panting arrangement and pounding arrangement
9. Hatch coamings minimum distance from deck plate
10.collosion bulkhead
11. about breast hook
12. In modren engines which type of propeller used?
13. In bottom which plate is strongest?
14. Learn about shell expansion plan(the position of D5 in shell expansion plan)
15. Shaft tunnel requires
16. Location of air vent in a tank
17. Tumblehome is for appearance of the ship.
18. about cofferdam location & pressure test
19. In Bulk carriers which frame is provided?
20. How peak tanks are pressure tested?
21. Formula for wake fraction
22.Before painting of a hull, what do we do?
23. Reserve buoyancy is more in (a)fresh water (b)sea water (c)brakish water (d) remains same
24. Frictional resistance increases with
25. About in water survey
26.Diagrams from "EYRES"(minimum of 2 ).Marking the structural members to find out.
27. problems regarding cb, if length is added at midship section,find out new cb
28.Wash plates are for
29. Centre of gravity changes with
30.Water tight doors are tested by
31. Weight of rudder is taken by
32. GM will change with
33. Propeller was tested in unyeilding fluid
34. Spacing of longitudinal in solid floors
35. Margin plate is from where to where
36. upto 5 Problems

STABILITY OCT ( numerical )
1.SECTION 1 : AP,1,2,3,FP are 2.5,1.55,1.75,1.45,0
SECTION 2 : AP,-1,-2,-3 are 2.5,1.85,1.6
LBP=50 appendages = 60
Find LCF


2.Breadth…” AP,1,2,3,4, FP” and Coordinates… “ 1, 1.44, 1.55, 1.33, 0.89, 0.2”
LBP is 14
then Find TPC? ……0.2, 0.3, 0.5, 0.6 t/cm?

3.Find Cw and TPC if ….Breadth…. “ AP 1,2,3,4, FP” and Coordinates …” 0.9, 1.5, 2.1, 1.6, 0.9, 0.1” and LBP is 15!
Ans… 0.56, 0.65, 0.34, 0.43 t/cm !

4.A barge of length 6.5m, Beam 10.2 m and Draft 4 m in Even Keel Condition. The ship is in
Water of Relative Density 1.006 t/Cubic Meter. Find the Bodily Sinkage of the Mean Draft, if
the Displacement is Constant…. 0.086, 0.076 etc!

5.Summer load line Displacement = 15,000 t, TPC=26.2, ship’s mean draft =6.2 m Ship is going
In Winter Region…what is the New Displacement? 


The edge of the propeller which cuts the water first, when the ship is driven ahead is known as
 A. Face
 B. Trailing edge
 C. Leading edge
 D. Driving edge

The RD solid block of wood is 0.75. All sides are equal to 1.0m. The block is floating in mercury. The RD of mercury is 13.4. What will be weight of a steel block just to submerge the block?
 A. 12.6 tonnes;
 B. 13.5 tonnes;
 C. 14.2 tonnes;
 D. 15.0 tonnes;
 
Find the TPC of the water plane. Length between perpendiculars is 15 m.
 Station: AP 2 3 4 FP
 ?? breadth (m): 0.6 1.1 1.6 0.9 0.1
 A. 0.5 tonnes/cm
 B. 0.4 tonnes/cm
C. 0.3 tonnes/cm
 D. 0.2 tonnes/cm.

The mass of a ship without cargo, fuel, stores, water, crew etc that a ship carries is known as:
 A. Deadweight
 B. Lightweight
 C. Displacement
 D. Tonnage

Find the 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 t/cm
 B. 0.3 t/cm
 C. 0.4 t/cm
 D. 0.5 t/cm


Which of the following must be provided in a shaft tunnel?
 A. A watertight door at the engine room bulkhead.
 B. Escape trunk at the aft end.
 C. A tunnel well for drainage
 D. All of the above


The purpose of providing camber is to:
 A. Improve the appearance of the ship
 B. Help drain off water from deck easily
 C. Reduce the volume of water coming on deck
 D. Help drain tanks to bilges

Find CWP and TPC of a vessel whose ?? breadths of the water plane as follows:
 Station: AP 1 2 3 4 FP
 ?? Breadths (M) 1.0 1.44 1.55 1.33 0.89 0.2
 Length between perpendiculars is 14 meters.
 Consider the nearest value.
 A. 0.56 tonnes/cm
 B. 0.34 tonnes/cm
 C. 0.43 tonnes/cm
 D. 0.65 tonnes/cm


Transverse areas at different stations are given as follows:

 AP
 1
 3
 4
 FP

 3.4 m2
 4.1 m2
 5.8 m2
 2.8 m2
 1.4 m2

 Length of the vessel is 24m. Find the Displacement of vessel

 A. 360.1 tonnes

 B. 345.2 tonnes

 C. 382.8 tonnes

 D. 350.0 tonnes

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

 Table 2
 Station
 AP
 -1
 -2
 -3




 ?? Breadths
 2.5
 1.88
 1.25
 0.63




 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.

 A. 4.87 m towards ford

 B. 4.23 m towards ford

 C. Midship

 D. 4.04 m towards aft


Thickness of strakes of bottom plating is increased in which of the following regions of the ship?
 A. Pounding region
 B. Over 40% of ship???s length amidships
 C. Over 40% of ships length forward
 D. Both A and B


1.Definitions of rolling,pitching,yawing,swaying,surging,heaving?
2. Problems on TPC & SIMPSONS of even numbers.i.e.6numbers.
3. If u see the propeller from aft which part do u see? which edge is visible to u?
4. Definitions of coffin plate,stealerplate,shoeplate,oxer plate.
5. Most commonly used stern.
6. TPC in brakish water
7. Tabular freeboard depends on
8. panting arrangement and pounding arrangement
9. Hatch coamings minimum distance from deck plate
10.collosion bulkhead
11. about breast hook
12.  Inmodren engines which type of propeller used?
13. In bottom which plate is strongest?
14. Learn about shell expansion plan(the position of D5 in shell expansion plan)
15. Shaft tunnel requires
16. Location of air vent in a tank
17. Tumblehome is for appearance of the ship.
18. about cofferdam location & pressure test
19. In Bulk carriers which frame is provided?
20. How peak tanks are pressure tested?
21. Formula for wake fraction
22.Before painting of a hull, what do we do?
23. Reserve buoyancy is more in (a)fresh water  (b)sea water (c)brakish water (d) remains same
24. Frictional resistance increases with
25. About in water survey
26.Diagrams from "EYRES"(minimum of 2 ).Marking the structural members to find out.
27. problems regarding cb, if length is added at midshipsection,find out new cb
28.Wash plates are for
29. Centre of gravity changes with
30.Water tight doors are tested by
31. Weight of rudder is taken by
32. GM will change with
33. Propeller was tested inunyeilding fluid
34. Spacing of longitudinal in solid floors
35. Margin plate is from where to where
36. upto 5 Problems




1 comment:

  1. Excellent blog here! Also your web site loads up very fast! What host are you using? Can I get your affiliate link to your host? I wish my website loaded up as fast as

    yours lol



    Ship Building Course

    ReplyDelete