1. The level measuring device, Sounding tape can be used for
- A. Oil can
- B. Multi Purpose
- C. Tanks of large depth
- D. Oil level in generator crankcase
Answer: C — Tanks of large depth
A sounding tape is a flexible, calibrated steel tape with a weighted plummet. It is the industry standard for measuring liquid depths in large-capacity storage tanks, such as double-bottom or deep tanks, where accuracy over a long vertical distance is required.
2. The level measuring device, Remote level indicators can be used for
- A. Multi Purpose
- B. Oil can
- C. Oil level in generator crankcase
- D. Tanks of large depth
Answer: A — Multi Purpose
Remote level indicators utilize various technologies (ultrasonic, hydrostatic, or radar) to transmit data to a central control station. Their versatility allows them to be used across a multi-purpose range of tank types and depths throughout the ship.
3. A sounding tape is used for measuring level of a liquid in a:
- A. Tank
- B. Boiler
- C. Crank case
- D. Cylinder
Answer: A — Tank
A sounding tape is a specialized measuring tool consisting of a graduated tape and a heavy bob. It is used specifically to measure the liquid level or ullage in ships' tanks to ensure compliance with loading and stability requirements.
4. A gauge-glass for checking liquid level is fitted on which tanks
- A. Lub Oil Storage Tank
- B. FO Storage Double Bottom Tank
- C. Fore Peak Ballast Tank
- D. After Peak Ballast Tank
Answer: A — Lub Oil Storage Tank
Gauge glasses are frequently installed on lubricating oil storage tanks in the engine room for convenient visual monitoring. Ballast and fuel tanks typically use sounding pipes or remote sensors to avoid the risk of oil or water leakage associated with glass tubes.
5. A dip stick is used for checking level of oil in a
- A. Filter
- B. Tank
- C. Crank case
- D. Cylinder
Answer: C — Crank case
A dipstick is a simple rod used to check the oil level directly within a machinery crankcase. It works by showing the oil level against marked graduation lines, providing a quick and reliable reading for reciprocating machinery.
6. The level measuring device, Dip stick can be used for
- A. Tanks of large depth
- B. Oil level in generator crankcase
- C. Oil can
- D. Multi Purpose
Answer: B — Oil level in generator crankcase
Dipsticks are specifically designed for small volumes and enclosed spaces like machinery crankcases. They provide a direct, tactile method for checking oil levels to ensure proper lubrication before and during machinery operation.
7. The most common item provided for checking oil level in a small machine is
- A. Sounding rod
- B. Remote level indicator
- C. Sight glass
- D. Sounding tape
Answer: C — Sight glass
A sight glass is a transparent tube or window attached to the side of a small machine or reservoir. It allows the operator to see the oil level instantly without opening the system, making it the most common and convenient indicator for small equipment.
8. What material is not a commonly used as insulation material?
- A. Wood
- B. Plastic
- C. Fire Bricks
- D. Glass Wool
Answer: B — Plastic
Plastic is a poor insulation material for high-temperature maritime applications and can melt or release toxic fumes if exposed to heat. Materials like glass wool and fire bricks are standard for their thermal resistance and safety properties.
9. What is used to prevent the transfer of heat from pipes or equipment?
- A. Cooling system
- B. Insulating material
- C. Air circulation
- D. Turbo charger
Answer: B — Insulating material
Insulating materials are substances with low thermal conductivity used to reduce the rate of heat transfer. They are essential on ships to keep heat within pipes and equipment, thereby improving thermal efficiency and preventing personnel burns.
10. What is the common name for item used for preventing the loss of heat from pipes or equipment?
- A. Exhaust boiler
- B. Air circulation
- C. Lagging
- D. Cooling system
Answer: C — Lagging
Lagging is the maritime term for the thermal insulation applied to pipes, boilers, and machinery. It serves the primary purpose of heat conservation and personnel protection by reducing surface temperatures to safe limits.
11. What materials are banned for use as insulation materials?
- A. Thermocole
- B. Asbestos
- C. Fiberglass Wool
- D. Fire Bricks
Answer: B — Asbestos
Asbestos is a hazardous material known to cause severe respiratory illnesses and cancer. It is strictly prohibited under SOLAS regulations in the construction and maintenance of modern ships; non-hazardous alternatives must be used.
12. Electrical Insulation prevent flow of ......
- A. Electricity
- B. Voltage
- C. Resistance
- D. Power
Answer: A — Electricity
Electrical insulation refers to materials used to wrap conductors to prevent the flow of electricity to unwanted paths. This prevents short circuits, equipment damage, and electrical shocks to personnel.
13. Chemicals should be stored in _______
- A. on deck
- B. in engine room
- C. in separate well ventilated store
- D. in accommodation
Answer: C — in separate well ventilated store
Chemicals must be stored in a dedicated, well-ventilated storeroom to prevent the accumulation of hazardous vapors and to ensure safety. Storing them in accommodation or the engine room poses significant health and fire risks.
14. If any chemical fall on the body, first action should be
- A. thoroughly wash affected area
- B. call for the doctor
- C. apply medicine to affected area
- D. wipe clean the affected area
Answer: A — thoroughly wash affected area
In the event of chemical contact, immediate flushing with large quantities of clean, fresh water is the universal first-aid procedure. This dilutes and removes the chemical agent, minimizing potential chemical burns.
15. Chemicals on-board are not to be used for
- A. cleaning the cooking utensils
- B. boiler water treatment
- C. fuel oil treatment
- D. cleaning the boiler
Answer: A — cleaning the cooking utensils
Chemicals used for industrial applications, such as boiler water treatment or fuel oil treatment, are often toxic and hazardous. They must never be used for any domestic purposes, such as cleaning cooking utensils, due to the risk of poisoning.
16. Disposal of used/expired chemical container should be done by
- A. throwin into deep sea
- B. burning in incinerator
- C. disposal with ships garbage
- D. disposal as per makers instruction
Answer: D — disposal as per makers instruction
Used or expired chemical containers must be disposed of strictly according to the manufacturer's Safety Data Sheet (SDS) and the ship's Garbage Management Plan. This ensures environmental compliance and avoids safety hazards.
17. Chemicals are mainly used for
- A. All of the above
- B. Testing quality of water
- C. Boilers
- D. Fuel treatment
Answer: A — All of the above
Chemicals on board are essential for maintaining the integrity of mechanical systems. This includes fuel oil treatment, boiler water quality monitoring, and cooling water maintenance, all of which are crucial for reliable ship operation.
18. Use of personal protective gear while handling chemicals...Mark the incorrect one
- A. Sun protect Goggles
- B. Face mask
- C. Apron
- D. Rubber gloves
Answer: A — Sun protect Goggles
Sun protection goggles are intended for outdoor UV protection and provide no defense against chemical splashes. Proper PPE for chemical handling includes chemical-resistant goggles, gloves, and aprons to prevent injury.
19. Steering gear is used to turn the
- A. rudder
- B. crane boom/jib
- C. propeller
- D. main engine
Answer: A — rudder
The steering gear is the machinery responsible for rotating the rudder to control the heading of the ship. It is a critical component for the safe navigation and maneuvering of the vessel.
20. Steering gear is located in the
- A. in a separate compartment aft of engine room
- B. forward of engine room
- C. on the bridge
- D. forecastle
Answer: A — in a separate compartment aft of engine room
Steering gear is located in the steering gear flat, which is situated at the extreme aft of the ship. This position allows for a direct, mechanical, or hydraulic connection to the rudder stock.
21. Rudder of the ship is turned by means of a
- A. steering wheel
- B. propeller
- C. hydraulic pump
- D. Cylinder and Ram arrangement only
Answer: D — Cylinder and Ram arrangement only
In most modern ships, the steering gear utilizes a hydraulic system where power units drive hydraulic rams. These rams act on the tiller to move the rudder, translating hydraulic force into mechanical steering motion.
22. Which of the following is a correct statement
- A. Rudder is connected to the propeller
- B. Steering gear is located at aft part of the ship
- C. Rudder is located in the steering flat
- D. Propeller is turned by the rudder
Answer: B — Steering gear is located at aft part of the ship
The steering gear flat is located at the aft-most part of the ship, directly above or near the rudder assembly. This allows the steering gear hydraulic rams to engage with the rudder stock efficiently.
23. Various components of Steering Gear ...Tick the incorrect one
- A. Hydrophore Unit
- B. Actuating Unit
- C. Control Unit
- D. Power Unit
Answer: A — Hydrophore Unit
A hydrophore unit is part of the ship's freshwater distribution system, not the steering gear. The steering gear consists of the power unit, control unit, and actuating (or tiller) unit.
24. While taking rounds in the Steering flat, following to be checked...Mark the incorrect
- A. Abnormal noise or vibrations
- B. Oil level of MDO in the steering gear system
- C. Load of the pump in Ampere
- D. Leakages from pumps, pipe joints, etc
Answer: B — Oil level of MDO in the steering gear system
Checking the oil level of MDO (Marine Diesel Oil) is irrelevant in the steering gear flat, as steering systems use specific hydraulic oil. Operators should check the hydraulic oil level, not fuel oil levels.
25. A quick closing valve is fitted on
- A. main engine cooling system
- B. boiler steam line
- C. fuel tanks above double bottom tanks
- D. compressed air line
Answer: C — fuel tanks above double bottom tanks
Quick closing valves are mandatory on fuel tanks located above double-bottom tanks. They provide an immediate, remote means to shut off fuel supply in the event of an engine room fire.
26. Man hole door on a tank is fitted for
- A. preventing entry by unauthorized persons
- B. strengthening the tank
- C. preventing damage on tanks
- D. allowing entry to the tank when needed
Answer: D — allowing entry to the tank when needed
A manhole door provides access to the interior of a tank for essential maintenance, such as cleaning, inspection, or repairs. These doors must be pressure-tight when closed to ensure tank integrity.
27. A quick closing valve
- A. stops air supply to main engine
- B. prevents fire from occuring
- C. prevents oil spills in engine room
- D. can be remotely closed in an emergency
Answer: D — can be remotely closed in an emergency
Quick closing valves are essential safety devices designed to be shut remotely from outside the engine room. They are triggered during fire emergencies to cut off fuel supply to machinery and prevent the escalation of a fire.
28. Air vent to tanks is provided for
- A. preventing build up of pressure or vaccum
- B. allowing liquid to come out when tank is full
- C. preventing fire
- D. for ventilation
Answer: A — preventing build up of pressure or vaccum
Air vent pipes are installed on tanks to allow air to escape when filling and to let air enter when emptying. This prevents dangerous pressure buildup or vacuum formation which could cause tank structural damage.
29. Sounding pipes on tanks are fitted for finding
- A. pressure in the tank
- B. level of liquid in the tank
- C. abnormal sound in the tank
- D. temperature in the tank
Answer: B — level of liquid in the tank
Sounding pipes provide a direct, reliable method for measuring the depth of liquid in a tank. By inserting a sounding tape into the pipe, the crew can determine the quantity of fuel or water present.
30. Quick closing valve operation is carried out from
- A. steering flat
- B. remote location outside engine room
- C. navigation bridge
- D. anywhere in the engine room
Answer: B — remote location outside engine room
For safety, quick closing valves must be operable from a location outside the machinery space. This ensures that in a fire scenario, the fuel supply can be shut down without endangering personnel.
