C–1210 Sub.

Code
11613

B.Sc. DEGREE EXAMINATION, NOVEMBER 2023.

First Semester

Nautical Science

BASIC SHIP KNOWLEDGE

(2023 onwards)

Duration : 3 Hours Maximum : 75 Marks

Part A (10 × 1 = 10)

Answer all questions.

1. Total number of major ports in Tamil Nadu are

(a) 10 (b) 12
(c) 13 (d) 14

2. Ro-Ro ships are used for carrying

(a) Automobile Vehicles
(b) Vegetables
(c) Ores
(d) Livestock

3. Bilge keel is provided for the purpose of

(a) Stability (b) Friction reduction
(c) Reduce corrosion (d) None of the above

4. The upward curvature of the weather deck is known as

(a) Camber (b) Keel
(c) Bilge keel (d) Flare
5. Bow Thruster is provided at
(a) Forepeak (b) Aft peak
(c) Midship (d) Near propeller shaft

6. Draught markings indicates the

(a) Submerged vertical height of ship’s Hull
(b) Height of ship’s Hull above water level
(c) Height of superstructure above water level
(d) None of the above

7. Double Bottom tanks are used for

(a) Stowage of water
(b) Stowage of Cargo
(c) Stowage of Fuel oil
(d) Stowage of all liquids

8. The Engine Room onboard ship is located at

(a) Lower most deck (b) Uppermost deck
(c) Forepeak (d) Aftpeak

9. Load line markings indicate the Master to identify

(a) The amount of cargo to be loaded
(b) The amount of empty space to be maintained
(c) Draught markings
(d) None of the above

10. The Shell expansion drawing is referred to calculate the

(a) Thickness of hull plates
(b) Tonnage of ship
(c) Draught markings
(d) None of the above
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 Part B (5 × 5 = 25)

Answer all questions.

11. (a) Enumerate the major ports in India.
Or
(b) Describe the need of Modern ports.
12. (a) List down any ten types of merchant vessels.
Or
(b) With an aid of neat diagram explain the difference
between LOA and LBP of ships.
13. (a) Explain the Timber Load line markings.
Or
(b) Explain the purpose and location of Wheel house.

14. (a) Describe the layout of Superstructure.

Or
(b) Draw the Double bottom tank and label the parts.
15. (a) Explain the numbering system of Hull frames.
Or
(b) What are International date lines? Explain in
details.

Part C (5 × 8 = 40)

Answer all questions.

16. (a) Discuss the development of Modern ports.
Or
(b) Explaining the following :
(i) Shear strake
(ii) Rise of floor
(iii) Air Draught
(iv) Base line
(v) Parallel middle body

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17. (a) Draw the neat diagram of General cargo ship
Engine room layout.

Or
(b) With an aid of neat sketch explain the Timber Load
line markings and label the Different water levels.

18. (a) Draw the profile view of General cargo ship and
mark the parts.

Or
(b) Explain the ventilation system of Tanker ship.

19. (a) How will you anchor the ship in a rocky area? Draw
a neat diagram and explain in detail.

Or
(b) Draw the General arrangement diagram of cargo
ship and mark important compartments.

20. (a) List down the precautions to be made on approach

of Bad weather.

Or

(b) Enumerate any eight principal dimensions of a ship.

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4 C–1210
 C–1211 Sub. Code
11614

B.Sc. DEGREE EXAMINATION, NOVEMBER 2023.

First Semester

Nautical Science

BASIC KNOWLEDGE OF NAVIGATION – I

(2023 onwards)

Duration : 3 Hours Maximum : 75 Marks

Part A (10 × 1 = 10)

Answer all questions.

1. What is the angle of inclination of earth?

(a) Zero (b) 45°

(c) 23.5° (d) 180°

2. Choose the correct value of polar radius of earth.

(a) 6357 Km (b) 7500 Km

(c) 1025 Km (d) 5600 Km

3. Mention the value of Statute mile.

(a) 5280 ft (b) 5589 ft

(c) 6505 ft (d) 7895 ft

4. Specify the angle of International Date Line

(a) 60° (b) 150°

(c) 160° (d) 180°

5. The occasion for hoisting Courtesy flagon board ship

while is at :

(a) Sea (b) Foreign port

(c) Indian Port (d) None of the above

6. How will you express the speed of ship?

(a) Knot (b) Mile

(c) Kilometre (d) Fathom

7. Expand GMT
(a) Greenwich Mean Time
(b) Greater Mile time
(c) Greater Mean Time
(d) Great Britain Mile Time

8. How many compasses are provided in ships?

(a) One (b) Two

(c) Three (d) Four

9. What is the maximum angle of inclination of Rudder on

either side?

(a) 27° (b) 35°

(c) 60° (d) 45°

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10. Which compass is working on the principle of Gyroscope?

(a) Gyrocompass (b) Magnetic compass

(c) None (d) Vastu compass

Part B (5 × 5 = 25)

Answer all questions.

11. (a) Define difference between latitude and longitude.

Or
(b) Describe Prime meridian with diagram.

12. (a) Find the deviation and fill in the table :

1 2 3
Brg (C) 196°(C) 151°(C) 274°(C)
0Brg (M) 181°(C) 146°(C) 282°(C)
Dev. – – –

Or
(b) How will you determine your location at sea?

13. (a) Find Relative bearing from the following :

1 2
T.Brg : 285° 35°
T.Course : 210° 102°
R.Brg : – –

Or
(b) Define Rhumb line with neat diagram.

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14. (a) Compare ‘D long with DMP’.

Or
(b) State the uses of Gnomonic chart for ship’s
navigation.

15. (a) Discuss method of measuring compass error using

transit bearing.

Or
(b) Find the position arrived after sailing 251°(T) for
856 mile from a starting position P 00°14’S
147°10’W.

Part C (5 × 8 = 40)

Answer all questions.

16. (a) Find the course and distance of using parallel

sailing :
From A 35° 00’N 154° 10’E
To B 39° 15’N 138° 10’E

Or
(b) (i) Describe as an ellipsoid.
(ii) Discuss the direction on earth’s surface.

17. (a) Explain the Boxing of compass with neat diagram.

Or

(b) Find the course and distance of using Traverse

Table :
From A 53° 30’N 165° 12’W
To B 42°13’N 170°23’E

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18. (a) Day’s work: On 6th May a ship in position 50° 24’S
148° 12’E steamed as follows :
True Co (c) Dev. L’way Wind Speed kn

3rd 0800 140° 5°E 4 5° SWXW 8

1200 130° 4°E 6.5° SWXW 7

1600 125° 3°E NIL SW 6

2000 1200 3°E NIL SW 7.0

2400 115° 3°E NIL S 6

0400 100° 2° NIL S 7

4th 0800 95° NIL NIL S 7

Variation 10°E throughout. Find the DR position at

morning 0800 Hours on 5th June and if the observed
position, then was 44° 10’S 174° 20’E. Find the set
and drift of current.

Or

(b) Prove the Diff of Longitude = Cosine of Latitude

with an example.

19. (a) Explain the procedure to transfer a great circle from

a Gnomonic chart to a Mercator chart.

Or

(b) Discuss briefly about Maritime geography.

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20. (a) Explain the Major Ocean routes of Maritime sector
and the precautions to be observed with respect to
Navigation in detail.

Or

(b) Explain the relationship between departure and

difference of longitude in cases involving a change of
latitude by using mean latitude.

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6 C–1211
 C–1212 Sub. Code
11615

B.Sc. DEGREE EXAMINATION, NOVEMBER 2023

First Semester

Nautical Science

NAUTICAL MATHEMATICS — I

(2023 onwards)

Duration : 3 Hours Maximum : 75 Marks

Part A (10 × 1 = 10)

Answer all questions.

1. When a plane cuts a sphere the section thus formed is

called —————

(a) a circle (b) a small circle

(c) a diameter (d) none

2. The intersection of the planes of two great circle is a

—————

(a) great circle (b) circle

(c) diameter (d) lines

3. The ————— of the diameter perpendicular to a section

of the sphere are called the poles of the section.

(a) diameter (b) extremities

(c) the axis (d) none

 co sec 2 θ − 1
4. Value of is
co sec 2 θ

(a) cos 2 θ (b) co sec 2 θ

(c) 1 (d) None of these

5. Find the grad(f) if f ( x , y, z ) = xy + y 2 z at the point

(0, 1, − 1) ?
  
(a) 2i + j + k (b) i − 2 j + k
     
(c) i + 2j + k (d) i − j − k

6. In a vector field, divergence of the gradient is

(a) curl (b) unity
(c) zero (d) laplacian

7. (n + 1) = n! can be used when —————

(a) n is any integer
(b) n is a positive integer
(c) n is a negative integer
(d) n is any real number

8. A square matrix A is said to be non singular if

(a) A = 0 (b) A ≠ 0

(c) A =1 (d) None

9. ————— is equal to the maximum number of linearly

independent row vectors in a matrix
(a) Row matrix (b) Rank of a matrix
(c) Term matrix (d) Linear matrix

2 C–1212
 4 2
10. The lowest eigen value of the 2 × 2 matrix   is
1 3
—————
(a) 5 (b) 3
(c) 1 (d) 2

Part B (5 × 5 = 25)

Answer all questions.

11. (a) Show that in any spherical triangle ABC

sin ( A + B ) cos a + cos b

=
sin c 1 + cos c

Or

(b) In a spherical triangle ABC . Given AB = 50 10′ ,

AC = 64 17′ , BC = 27 37′ . Find C using Haversine
formula.

12. (a) Explain Napier’s rule.

Or
(b) In an equilateral spherical triangle ABC, prove that
a
1 − 2 cos A = tan 2 .
2

2x + 3
13. (a) Find yn if y = log .
3x + 2

Or

(b) Verify that fyx = fxy when f = x 3 .

3 C–1212
 ∞
π

2
14. (a) Prove that e − x dx = using Gamma function.
0
2

Or
1 2

  xy dy dx .
2
(b) Evaluate I =
0 0

15. (a) Find the sum and product of the eigen values of the
3 − 4 4 
 
matrix  1 − 2 4  with out actually finding the
1 − 1 3 
 
eigen values.

Or

1 1 1 1 
 
(b) Find the rank of the matrix A =  4 1 0 2  by
 0 3 4 2
 
examining the determinant minors.

Part C (5 × 8 = 40)

Answer all questions.

16. (a) ABC is a spherical triangle in which b = c . Prove

a
that cos B = cot b tan , hence find B if
2
a = 60  25′, b = 55 18′ .

Or
(b) In a spherical triangle ABC, show that
A π
sin 2c = cos a sec 2 when b + c = .
2 2

4 C–1212
17. (a) Derive the Haversine formula.

Or

(b) In a quadrantal triangle ABC, b = 78 14 ′,

c = 49  08′ and a = 90  . Determine the angle

A and B.

18. (a) If y = sin [log ( x 2 + 2x + 1)] prove that (1 + x ) 2

yn + 2 + (2n + 1) (1 + x ) yn +1 + (n 2 + 4 ) yn = 0 using
Leibnitz’s theorem.

Or

 x 3 + y3 + z 3 
(b) If u = sin −1   prove that
 ax + by + cz 
∂u ∂u ∂u
x +y +z = 2 tan u . Using Euler’s
∂x ∂y ∂z
theorem.

π
2 α
r
19. (a) Evaluate   (r
0 0
2
+ a 2 )2
drdθ .

Or

(b) Change the order of Integration in

π
2 2 a cos θ
I =   f (r, θ ) rdrdθ .
0 0

5 C–1212
20. (a) Solve the following homogeneous equations
x + y + 3z = 0; x − y + z = 0; x − 2 y = 0 .

Or
(b) Find the eigen value and eigen vector of the matrix
2 − 2 2 
 
A = 1 1 1 .
1 3 − 1
 

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6 C–1212
 C–1213 Sub. Code
11616

B.Sc. DEGREE EXAMINATION, NOVEMBER 2023.

First Semester

Nautical Science

NAUTICAL PHYSICS AND ELECTRONICS — I

(2023 onwards)

Duration : 3 Hours Maximum : 75 Marks

Part A (10 × 1 = 10)

Answer all questions.

1. What is the angle of dip at magnetic poles of earth

(a) Zero (b) 45°
(c) 90° (d) 180°

2. The refrigerator works on the principle of?

(a) Osmosis
(b) Centrifugation
(c) Dispersion
(d) Evaporation

3. A ray reflected successively from two plane mirrors

inclined at a certain angle undergoes a deviation of 3000.
Then the number of images observable is
(a) 60 (b) 12
(c) 11 (d) 5
4. Which of the following statement is correct for the
Doppler effect?
(i) The apparent frequency will be more than the
actual frequency when the observer moves towards
the stationary source
(ii) The apparent frequency will be more than the
actual frequency when the source moves towards
the stationary observer
(a) Only (i) is correct
(b) Only (ii) is correct
(c) Both (i) and (ii) are correct
(d) Neither (i) nor (ii) is correct
5. Which of the following is know, as indirect band gap
semiconductor?
(a) Germanium (b) Nickel
(c) Platinum (d) Carbon
6. According to Hooke’s Law, if stress is increased the ratio
of stress to stain will
(a) Increase (b) Decrease
(c) Remain constant (d) First increase then decrease

7. Positive feedback is used in

(a) Oscillators (b) Low gain amplifier
(c) High gain amplifier (d) Rectifier

8. Which of the following is / are the universal logic gates?

(a) OR and NOR (b) AND
(c) NAND and NOR (d) NOT

9. Modulation is required
(a) To transmit electrical signals over an antenna
through free space
(b) To improve the signal to noise ratio
(c) To make the low frequency signals travel long
distance
(d) All of the above

2 C–1213
10. How many flip-flops are there in a flag register of 8085
microprocessor
(a) 4 (b) 5
(c) 7 (d) 10

Part B (5 × 5 = 25)

Answer all questions.

11. (a) Difference between soft and hard magnetic

materials.
Or
(b) Derive the expression for thermal efficiency of a
Carnot cycle with its p-V and Ts Diagram?
12. (a) Write laws of refraction. Explain the same with the
help of ray diagram, when a ray of light passes
through a rectangular glass slab.

Or
(b) Two trains A and B are moving towards each other
at a speed of 432 km/h. If the frequency of the
whistle emitted by A is 800 Hz then what is the
apparent frequency of the whistle heard by the
passenger sitting in train B.

13. (a) How the gyroscope concept used in ship?

Or
(b) Explain the cantilever beam.
14. (a) Briefly discuss about the semiconductor, properties
and classification with examples.
Or
(b) Explain in detail about the zoner diode as voltage
regulator.

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15. (a) Explain in detail the negative and positive feedback
amplifier with necessary diagram.
Or
(b) Explain in detail about the Wein bridge oscillator.

Part C (5 × 8 = 40)

Answer all questions.

16. (a) Give a brief note on magnetic elements of the earth.

Or
(b) Explain the different modes of heat transfer.
17. (a) Explain the phenomena of total internal reflection.
Or
(b) Explain the working of He-Ne Laser.
18. (a) Write a short notes on streamline and turbulence
flow with examples.
Or
(b) Explain in detail about the LED.
19. (a) Explain about the Ripple Factor, Peak inverse
Voltage and the efficiency of full wave bridge
rectifier with necessary circuit diagram.
Or
(b) What are the types of flip flop and explain different
types a of flip flop?
20. (a) Derive the maximum range for a radar system from
first principles.
Or
(b) Explain the architecture, data flow and instruction
execution of 8085 microprocessor.
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4 C–1213