According to the recommendations of International Navigational Congress in 1912,

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Question
According to the recommendations of International Navigational Congress in 1912, the ratio of length to width at the entrance for passenger vessels is :
Options
A. 7.25 to 1
B. 7.80 to 1
C. 8.11 to 1
D. 8.44 to 1

Correct Answer

8.44 to 1

Docks and Harbours problems

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1. Pick up the correct statement from the following:
Options
A. An artificial barrier which makes the enclosed area safe for anchorage of ships, is known as break water
B. The break water whose inside is used as a plateform for loading and unloading is called a mole
C. The length of the quay wall is governed by the length of the largest vessel likely to be berthed
D. All the above.

2. Pick up the correct statement from the following:
Options
A. The regular periodic rise and fall of the surface of the sea, is called tide.
B. The average difference in water level between high tide and low tide at a place, is called tidal range
C. The movement of water caused by the action of tide, is called a tidal current
D. all of the above.

3. The dock wall is designed as a gravity retaining wall and is tested for
Options
A. back fill pressure when the dock is empty
B. maximum water pressure from the dock without any back fill
C. the load charge transmitted to the dock by the movement of loaded vehicles or trains on the way
D. all of the above.

4. The horizontal angles from the boat between A and B and B and C, the stations on the shore are respectively ?₁ and ?₂. The distances AB = L₁ and BC = L₂. For calculating the angle ?₂ at C between the boat and station B is obtained by using the following formula: where (? is horizontal angle between A and C at B).
Options
A.
B. ?_t tan ?₂ = 360� - (?₁ + ?₂ + ?) = ?
C.
D. all the above.

5. Pick up the correct statement from the following:
Options
A. The artificial barrier constructed to enclose "n area for safe anchorage, is called break water
B. The smoothened surface at the top end of the vertical face of a guay wall, is called fending
C. The effective berthing lengths of inclined guays can be adjusted
D. All the above.

8. At a place the shore line is along North West-South East. The wind is blowing from the north. The littoral drift will be along
Options
A. south east
B. south
C. south west
D. west
E. north west

9. Cretans :
Options
A. are the harbours established on the island south east of Greek mainland
B. are the natives of crete, an island south of Greek mainland
C. are the plants, grown in the neighbourhood of harbours
D. none of the above.

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