1. Dry dock is meant for
- carrying out dredging of operations
- carrying out training operations
- carrying out minor repair works of ships
- carrying out major repair works of ships
2. The impact load of ship while docking is taken up by
- Morning dolphins
- Breasting dolphins
- Bulk head
- Fixed mooring berth
3. A ‘dock’ parallel to the shore is called
4. The sea remains covered with streaking foam when the nature of wind is
5. In the offshore region at a particular harbour facility, an oscillatory wave train approaches with wavelength of 80 m where the mean sea depth is 30 m. What would be the velocity of the individual waves?
- 17.15 m/s
- 16.05 m/s
- 15.15 m/s
- 14.05 m/s
6. Which of the following is a semi-natural harbour?
7. Which of the following is a natural harbour?
8. Which of the following is an artificial harbour?
- New York
9. Which of the following is a semi-natural harbour?
- Plymouth (England)
10. Which of the following is(are) artificial harbour?
- New York
- Jabel Ali (Dubai)
11. What is a protective barrier constructed to enclose harbours, and to keep the harbour waters undistributed by the effect of heavy and strong seas?
- entrance lock
12. For proper planning of harbours, oscillatory waves in the relevant off-shore region must be taken into account. If the sea depth is 30 m and an oscillatory waves train is observed to have wavelength of 50 m, what would be the velocity of the individual waves?
- 9.43 m/s
- 9.21 m/s
- 8.83 m/s
- 9.08 m/s
- is a part of port
- contains ports
- synonym of port
- is used for stocking of goods
14. What is the purpose of providing slipways in a harbour?
- To demarcate the harbour entrance
- To act as cushion to absorb shock of ship during loading and unloading
- Repairing and building of ship.
- Mooring structure in combination with loading platform.
15. A plane beach of a sea coast having a slope of 1 on 80 and normally incident waves with deep water height of 4 m and period 9 seconds. Estimate the maximum wave run up on beach.
- 1.2 m
- 0.68 m
- 0.86 m
- 1.44 m
16. The protective barrier constructed to enclose harbours is known as