new and full moons
1.new and full moons
2.noon
3.7-8 days after new and full moons
4.midnight
Posted Date:-2022-09-23 14:52:18
1 knot is
1. 1.252 kmph
2.1.522 kmph
3.1.742 kmph
4.1.852 kmph
Posted Date:-2022-09-23 14:08:06
A ship is berthed in a chamber and lifted by principles of buoyancy. Such a chamber is called
1. refuge dock
2.dry dock
3. wet dock
4.floating dock
Posted Date:-2022-09-23 15:26:39
A ship strikes the berth generally at an angle
1.10° with the face of the dock
2.30° with the face of the dock
3.45° with the face of the dock
4.90° with the face of the dock
Posted Date:-2022-09-23 15:00:48
As compared to wall type breakwater, mount type breakwater
1. results in less damage due to gradual failure
2.requires skilled water
3.requires less material
4. requires low maintenance water
Posted Date:-2022-09-23 15:30:11
As per Berlin's formula, the length of wave in metres is given by
1.1.34 t2
2. 1.56 t2
3.1.74 t2
4.1.94 t2
Posted Date:-2022-09-23 15:24:55
Beafort number of hurricane is
1.6
2.8
3.12
4.16
Posted Date:-2022-09-23 14:16:07
If the fetch is 225 km, according to Thomas Stevenson, height of wave will be
1.2.1 m
2. 5.1 m
3. 6.8 m
4.8.1 m
Posted Date:-2022-09-23 15:31:21
In the basins subjected to strong winds and tide, the length of the berthing area should not be less than
1. twice the length of design vessel
2. the length of design vessel + 20% clearance between adjacent vessels
3.the length of design vessel + 10% clearance between adjacent vessels
4.the length of design vessel
Posted Date:-2022-09-23 14:59:28
Kandla is a
1.artificial harbour
2.military harbour
3.natural harbour
4.semi natural harbour
Posted Date:-2022-09-23 14:18:56
Neap tides are the tides in
1. new and full moons
2.noon
3.7-8 days after new and full moons
4.midnight
Posted Date:-2022-09-23 14:35:10
Quays are platforms provided
1.perpendicular to shore
2.along shore
3.breakwaters
4. both a and b
Posted Date:-2022-09-23 14:19:58
Spring tides are the tides in
1.new and full moons
2. the noon
3.midnight
4. 7 to 8 days after new and full moons
Posted Date:-2022-09-23 15:11:02
The area required for manoeuvring the slip when it enters or leaves the berth so as to move head on is known as
1.turning basin
2.sheltered basin
3.approach channel
4.jetty
Posted Date:-2022-09-23 15:08:06
The breakwaters height is _____ times the expected wave heights above the mean sea level
1.1.2 to 1.25
2. 1.3 to 1.35
3.1.4 to 1.45
4. 1.5 to 1.55
Posted Date:-2022-09-23 14:31:50
The difference in height between highest high water and lowest low water is called
1.mean rise
2.mean range
3. maximum range
4.maximum rise
Posted Date:-2022-09-23 14:12:51
The minimum width of apron provided is
1.8 m
2.10 m
3.12 m
4.15 m
Posted Date:-2022-09-23 15:18:36
The most popular method of construction of wall breakwaters is
1.stagling method
2. low level method
3.barge method
4.none of the above
Posted Date:-2022-09-23 14:54:20
The process of carrying the drifting sand and depositing it on seashore is known as
1.fender
2.slip
3. littoral drift
4. none of the above
Posted Date:-2022-09-23 15:05:41
The process of carrying the drifting sand and depositing it on seashore is known as
1.fender
2.slip
3. littoral drift
4. none of the above
Posted Date:-2022-09-23 15:05:42
The space of water between two adjacent piers where ships are berthed is known as
1.fender
2.jetty
3.slip
4.locked basin
Posted Date:-2022-09-23 14:15:26
Wharves are the platforms provided
1. along shore
2.along breakwaters
3.perpendicular to shore
4. both a and b
Posted Date:-2022-09-23 14:09:01
When a ship floats at its designed water line, the vertical distance from water line to the bottom of the ship is known as
1.draft
2.freeboard
3.beam
4.depth
Posted Date:-2022-09-23 14:10:12
Which of the following are repair docks?
1.wet docks, lift docks, marine railways, dry docks
2.wet docks, floating docks, lift docks, marine railways
3.dry docks, wet docks, floating docks, lift docks
4.marine railways, dry docks, floating docks, wet docks
Posted Date:-2022-09-23 15:09:50
Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?
1.when the dock is full of water
2.when the dock is empty with the ship of maximum tonnage
3.when the dock is empty
4. when the dock is dry and is under construction
Posted Date:-2022-09-23 14:57:33
Which of the following is a fixed type mooring accessory?
1.anchors
2. bollard
3.buoys
4.cables
Posted Date:-2022-09-23 15:01:50
Which of the following structures are constructed parallel to shore line to develop a demarcating line between land area and water area?
1.bulk heads, revetments and groynes
2.sea walls, revetments and groynes
3.sea walls, bulk heads and groynes
4.sea walls, bulk heads and revetments
Posted Date:-2022-09-23 14:24:28
Which of the following structures protects the shore by trapping of littoral drift?
1. revetments
2.groynes
3.sea walls
4.moles
Posted Date:-2022-09-23 14:25:26
Which of the following type of sea walls results in greater protection of shore structures?
1.sea wall with concave face
2.stepped sea wall
3.sea wall with batter
4.vertical sea wall
Posted Date:-2022-09-23 15:28:59
Which one of the following is not a type of dredger?
1. Compression dredger
2.Dipper dredger
3.Grapple dredger
4. Ladder dredger
Posted Date:-2022-09-23 15:04:00
Which one of the following protects the shore by trapping littoral drift?
1.groynes
2.wharves
3.sea walls
4. breakwaters
Posted Date:-2022-09-23 15:32:29