1. Cargo hold washing are pumped out
- A. Into the engine bilges
- B. Through the hold bilges
- C. Into the side
- D. Through the double bottom tank
Answer: B — Through the hold bilges
After cargo hold washing, the resulting water is typically pumped out through the hold bilge system. This system collects and pumps liquids from the lowest part of the hold overboard or to a slop tank.
2. The flammable range of a gas is
- A. Between LFL and UFL in hydrogen
- B. Above UFL
- C. Below LFL
- D. Between the LFL and UFL in air
Answer: D — Between the LFL and UFL in air
The flammable range, or explosive limits, of a gas mixture in air is defined by the concentrations that can support combustion. It lies between the Lower Flammable Limit (LFL) and the Upper Flammable Limit (UFL).
3. Inert gas has a
- A. High content of sulphur
- B. Low content of nitrogen
- C. High content of oxygen
- D. Low content of oxygen
Answer: D — Low content of oxygen
Inert gas, commonly used for cargo tank protection, is characterized by a very low oxygen content. This lack of oxygen prevents combustion by displacing the flammable vapor and air mixture.
4. General cargo consists of
- A. Bulk grain
- B. LNG
- C. Bales
- D. Liquid cargo
Answer: A — Bulk grain
General cargo is a broad category that traditionally encompasses a wide variety of non-bulk, non-liquid commodities. While the options provided are varied, 'Bulk grain' is often considered a specific type of bulk cargo, but in a generalized context of cargo types, 'Bales' and similar packaged goods fall under general cargo.
5. The cargo hold of a cellular container Ship has the following fittings inside
- A. Hatch boards
- B. Pillars
- C. Cell guides
- D. Tween deck
Answer: C — Cell guides
Cellular container ships are equipped with cell guides within the cargo holds. These vertical structures precisely guide containers into their designated slots, ensuring stability and efficient stowage.
6. Cargo hold bilge strum boxes should be cleaned
- A. After every discharge of cargo
- B. Once a month
- C. Every year
- D. In dry-dock
Answer: A — After every discharge of cargo
Cargo hold bilge strum boxes are critical for preventing debris from entering the bilge pumping system. Cleaning them after every cargo discharge ensures the bilge system remains clear and effective.
7. All accesses to a cargo hold should be
- A. Corrosion resistant
- B. Held tight
- C. Water tight
- D. Weather tight
Answer: D — Weather tight
All accesses to a cargo hold, such as hatches and manholes, must be weather tight. This is essential to prevent the ingress of seawater, rain, and spray, protecting the cargo from damage.
8. The safe working load of the derrick or crane can be
- A. Exceeded if operating slowly
- B. Exceeded when required
- C. Exceeded
- D. Should not be exceeded
Answer: D — Should not be exceeded
The Safe Working Load (SWL) of any lifting appliance, including derricks and cranes, represents the maximum load they are certified to handle safely. Exceeding this limit poses a significant risk of equipment failure and accident.
9. The ships crane can rotate through
- A. 180 degrees
- B. 270 degrees
- C. 360 degrees
- D. 90 degrees
Answer: C — 360 degrees
Ships' cranes, particularly those designed for cargo handling, are typically capable of rotating a full 360 degrees. This allows for comprehensive coverage and efficient operation around the working area.
10. A Ro Ro ship can be used to carry
- A. All of the below
- B. Passengers
- C. Cars
- D. Trucks
Answer: A — All of the below
Ro Ro (Roll-on/Roll-off) vessels are specifically designed to carry wheeled cargo, including cars, trucks, trailers, and passengers who may be accompanying their vehicles. Therefore, they can accommodate all listed types of cargo.
11. Bilges should be cleaned, covered with burlap and cemented
- A. Prior to loading bulk cargo
- B. After loading bulk cargo
- C. Prior to cleaning the cargo hold
- D. After discharging bulk cargo
Answer: A — Prior to loading bulk cargo
Prior to loading bulk cargo, the bilges of the holds must be prepared. Cleaning them and covering with burlap then cementing prevents loose material from entering the bilge system during loading and transit.
12. At sea container lashings should be tightened
- A. Weekly
- B. Fortnightly
- C. Only after rough weather is encountered
- D. Daily
Answer: D — Daily
Container lashings on cellular container ships require regular inspection and tightening, especially at sea. Daily checks are often necessary to ensure the security of the containers against the dynamic forces of the marine environment.
13. A LNG tanker carries
- A. Liquefied natural gas
- B. Petroleum gases
- C. Crude oil
- D. Chemicals
Answer: A — Liquefied natural gas
LNG tankers are specialized vessels designed for the transportation of Liquefied Natural Gas. The cargo is natural gas that has been cooled to a liquid state for easier storage and transport.
14. A ballast tank must not be pressurized as it will
- A. Damage the tank
- B. Increase the draft
- C. Sink the ship
- D. Cause pollution
Answer: A — Damage the tank
Pressurizing a ballast tank beyond its design limits can cause structural damage. Ballast tanks are designed to withstand hydrostatic pressure and normal venting, not over-pressurization.
15. All cargo gear should have
- A. Colour codes
- B. Test certificates
- C. Name codes
- D. Maintenance certificates
Answer: B — Test certificates
All cargo gear, including cranes, derricks, and associated lifting equipment, must have valid test certificates. These certificates verify that the gear has been inspected, tested, and certified safe for its intended working load, as per international regulations.
16. Discharge of chemical cargo tank washing should comply with
- A. MARPOL
- B. STCW
- C. SOLAS
- D. ISM
Answer: A — MARPOL
The discharge of chemical cargo tank washings is strictly regulated by MARPOL. Annex II of MARPOL provides specific requirements for the handling and disposal of residues from chemical tankers to prevent marine pollution.
17. Gooseneck of a derrick is an arrangement
- A. To house the derrick when at sea
- B. Which supports a derrick block
- C. Which supports the derrick heel
- D. For rigging a Derrick
Answer: C — Which supports the derrick heel
The gooseneck is a component of a derrick rig that supports the derrick heel (the lower end of the mast or derrick spar). It allows the derrick to pivot and be secured in position.
18. Prior to loading bulk cargo the holds should be
- A. Cleaned and all the dunnage piled up in one section of the hold
- B. Cleaned with the bilge cover kept open
- C. Swept clean and all sweepings put in the bilges
- D. Cleaned in all respects for the next cargo
Answer: D — Cleaned in all respects for the next cargo
Before loading bulk cargo, cargo holds must be thoroughly cleaned and prepared to ensure the cargo's integrity and to prevent contamination. All residues must be removed, and the holds must be in a suitable condition for the specific cargo being loaded.
19. Containers are interlocked together with
- A. Bridge fittings
- B. All of the above
- C. Twist locks
- D. Linkage plate
Answer: B — All of the above
Containers on board a vessel are secured together using various fittings. Twist locks are inserted into the corner castings to lock adjacent containers, while bridge fittings and linkage plates can be used for further securing.
20. The knot used for making a back splice is a
- A. Overhand knot
- B. Figure of eight knot
- C. Reef knot
- D. Crown knot
Answer: D — Crown knot
A crown knot is used as the finishing knot in a back splice for wire ropes. It secures the ends of the spliced wires, preventing them from unraveling.
21. Block which has a hinged side is known as
- A. Snatch block
- B. Chain block
- C. Gin Block
- D. Heel block
Answer: A — Snatch block
A snatch block is a type of pulley block that has a hinged or opening side. This feature allows the rope to be easily inserted without having to be threaded through the entire block, simplifying rigging.
22. The advantage of using a purchase is that for a given size of wire rope
- A. The frictional forces are reduced
- B. greater weight can be lifted
- C. smaller weight can be lifted
- D. The same weight can be lifted
Answer: B — greater weight can be lifted
A purchase, which is a system of ropes and pulleys (blocks), provides mechanical advantage. This allows a greater weight to be lifted with less effort than would be required with a single rope, for the same size of rope.
23. The SWL of each block is punched on the
- A. Hook
- B. Swivel
- C. Cheek
- D. Binding straps
Answer: D — Binding straps
The Safe Working Load (SWL) of a block used in lifting tackle is typically stamped or punched onto the cheek plate, which is the side plate of the block. This marking ensures that the maximum safe load is clearly indicated.
24. A lead block is used in a derrick when rigging the
- A. Stay wire
- B. Heel block
- C. Preventer wire
- D. Purchase to advantage
Answer: D — Purchase to advantage
A lead block, often a single sheave block, is used in a derrick rig to change the direction of the running part of a rope, enabling the purchase to be rove to advantage. This means the direction of pull is adjusted for more efficient lifting.
25. To make temporary eye at one end the most useful knot is
- A. Reef knot
- B. Overhand knot
- C. Bowline
- D. Figure of eight knot
Answer: C — Bowline
The bowline is the most suitable knot for creating a temporary eye in a rope end. It forms a secure, non-slipping loop that is easy to untie even after being under load, essential for many rigging and rescue applications.
26. To increase the life of a steel wire rope in a crane it should be
- A. Changed end to end
- B. Greased regularly
- C. Kept slack on the drum
- D. Painted
Answer: B — Greased regularly
Regular greasing of the steel wire rope used in cranes is crucial to prevent corrosion and reduce friction between the wires and strands. This maintenance significantly extends the rope's service life and ensures its safe operation.
27. Proof Load of derrick / crane is
- A. More than safe working load
- B. Same as safe working Load
- C. Less than
- D. More than breaking strength
Answer: A — More than safe working load
The Proof Load of a derrick or crane is defined as the load that the equipment can withstand without permanent deformation or failure. It is always specified as being more than the Safe Working Load (SWL) to ensure a margin of safety.
28. A single sheave block is used to
- A. Prevent the wire from being damaged
- B. Eliminate friction
- C. Increase the power gained
- D. Act as a lead block
Answer: D — Act as a lead block
A single sheave block, when used in a derrick or lifting arrangement, primarily functions as a lead block. It redirects the line of pull, allowing the rope to run smoothly and efficiently, often in conjunction with other blocks.
29. A shackle is moused to:
- A. Increase the SWL of the shackle
- B. Strengthen the shackle
- C. Prevent the pin from slipping
- D. Prevent corrosion of the pin
Answer: C — Prevent the pin from slipping
Mousing a shackle, typically with wire or marline, is a safety measure to prevent the pin from accidentally working loose and falling out. This ensures the integrity of the connection, especially under dynamic loading conditions.
30. A purchase is roveto advantage when
- A. The pull is coming from the moving block
- B. The pull is coming from the standing block
- C. The wire thickness is reduced
- D. The purchase is hoisting more weight
Answer: A — The pull is coming from the moving block
A purchase is rove to advantage when the direction of the hauling part originates from the moving block. This configuration allows for mechanical advantage, meaning less force is required to lift a given weight.
