95 Scs 4 Sr. No. 2
5
95SCS-4 Sr. No. 2 EXAMINATION OF MARINE ENGINEER OFFICER Function: Controlling Operation of ship and care for persons on board at Operational Level SHIP CONSTRUCTION & STABILITY CLASS IV (Time allowed - 3 hours) INDIA (2001) Afternoon Paper Total Marks 100 N.B. - (1) All Questions are compulsory (2) All Questions carry Equal Marks. (3) Neatness in handwriting and clarity in expression carries weightage 1. An undivided double bottom tank 24 meters long, with vertical sides of depth 1.5m has ½ ordinates commencing at the after perpendicular as follows: Station 0 1 2 3 4 5 6 ½ Ordinate (m) 6. 0 6. 0 5. 9 5. 7 5. 4 4. 9 4. 3 Find (1) the volume of the tank, (2) the distance of the centroid of the tank from the AP. 2. A vessel displacing 16000 tonnes has a TPC 20 tonnes/cm and is floating at a draft of 9.4m in water of density 1.010 tonnes/m 3 in a summer zone. If the vessel’s summer load draft is 9.5m, calculate amount of cargo she may load. 3. A vessel displacement 12500 tonnes has KG 9.6m. On completion of loading she is required to have KG of 9.5m. 1000 tonnes is loaded at Kg 5.5m. 850 tonnes is loaded at Kg 13.6m. find the Kg at which to load a further 1600 tonnes of cargo to produce the required final KG. 4. A box vessel has length, 95m; breadth, 8m; depth, 6.5m and is floating at draft 4m in salt water with KG 3.0m. Find the drafts fore and aft if a full breadth end compartment of length 6m is bilged.
-
Upload
bhupender-ramchandani -
Category
Documents
-
view
43 -
download
1
description
gme
Transcript of 95 Scs 4 Sr. No. 2
95SCS-4Sr. No. 2
EXAMINATION OF MARINE ENGINEER OFFICERFunction: Controlling Operation of ship and care for persons on board at
Operational LevelSHIP CONSTRUCTION & STABILITY
CLASS IV (Time allowed - 3 hours)
INDIA (2001) Afternoon Paper Total Marks 100
N.B. - (1) All Questions are compulsory (2) All Questions carry Equal Marks. (3) Neatness in handwriting and clarity in expression carries weightage
1. An undivided double bottom tank 24 meters long, with vertical sides of depth 1.5m has ½ ordinates commencing at the after perpendicular as follows:
Station 0 1 2 3 4 5 6½ Ordinate (m)
6.0 6.0 5.9 5.7 5.4 4.9 4.3
Find (1) the volume of the tank, (2) the distance of the centroid of the tank from the AP.
2. A vessel displacing 16000 tonnes has a TPC 20 tonnes/cm and is floating at a draft of 9.4m in water of density 1.010 tonnes/m3 in a summer zone. If the vessel’s summer load draft is 9.5m, calculate amount of cargo she may load.
3. A vessel displacement 12500 tonnes has KG 9.6m. On completion of loading she is required to have KG of 9.5m.1000 tonnes is loaded at Kg 5.5m.850 tonnes is loaded at Kg 13.6m.find the Kg at which to load a further 1600 tonnes of cargo to produce the required final KG.
4. A box vessel has length, 95m; breadth, 8m; depth, 6.5m and is floating at draft 4m in salt water with KG 3.0m. Find the drafts fore and aft if a full breadth end compartment of length 6m is bilged.
5. A ship leaves port upright with a full cargo of timber, and with timber on deck. During the voyage, bunkers, stores and fresh water are consumed evenly from each side. If the ship arrives at her destination with a list, explain the probable cause of the list and how this should be remedied.
6. Sketch transverse section through a ship showing the positions of centre of gravity, centre of buoyancy, and initial matacenter, when the ship is in (a) stable equilibrium (b) unstable equilibrium, and (c) neutral equilibrium
7. You can generally improve the vessel's stability in a hazardous situation by _______________.(A)pumping double bottoms to the forepeak(B) ballasting deep tanks(C) transferring ballast athwartships(D)deballasting double bottomsBriefly Justify your Answer
8. Which of the following conditions will occur to the ship's center of gravity if 200 tons of steel is transferred to the ships cargo hold from shore side?
(A)The reserve buoyancy will rise.(B) The center of gravity will remain in the same position.(C) The center of gravity will be lowered.(D)The reserve buoyancy will remain the same.Briefly Justify Your Answer
9. If a vessel rolls to the starboard side, and there are no movable or moving weights onboard, the center of gravity will ____________.
(A)move to port(B) move to starboard(C) move directly down(D)stay in the same positionBriefly Justify Your Answer
10. In the event of a collision, watertight integrity may be lost if _____________.(A) the sounding tube cap from a damaged tank is missing(B) the dogs on a manhole cover are secure(C) you have recently replaced a gasket in a watertight door(D)you operate the dewatering system from a flooded compartmentBriefly Justify Your Answer
-----------------------X------------------
95SCS-4Sr. No. 2
EXAMINATION OF MARINE ENGINEER OFFICERFunction: Controlling Operation of ship and care for persons on board at
Operational LevelSHIP CONSTRUCTION & STABILITY
CLASS IV (Time allowed - 3 hours)
INDIA (2001) Afternoon Paper Total Marks 100
N.B. - (1) All Questions are compulsory (2) All Questions carry Equal Marks. (3) Neatness in handwriting and clarity in expression carries weightage
AnswersAnswer for Question No. 1(1) Volume = 397.2m3
(2) Distance of Centroid of tank from AP = 11.4m
Answer for Question No. 2FWA 200mDWA 120mSinkage 22cm Cargo to load 433.6 tonnes.
Answer for Question No. 3
Weight (tonnes) KG Moment 12500 9.6 1200001000 5.5 5500850 13.6 115601600 X 1600X15950 137060 + 1600X
KG = moment of weight
Displacement 9.5 = 137060 + 1600X 15950151525 = 137060 + 1600X1600X = 14465
X = 9.041mLoad 1600 tonnes at Kg 9.041m(Note. A more partical view is to regard 9.041m as the mean Kg of the 1600 tonnes after it has been distributed between availablespaces.)
Answer for Question No. 4MCTC 50.48 tonne m/cmTrim 185.2cmDraft forward 5.254m; aft 3.404m
Answer for Question No. 7 Correct Answer: B
Answer for Question No. 8 Correct Answer: C
Answer for Question No. 9 Correct Answer: D
Answer for Question No. 10 Correct Answer: A
