WorksheetsSpecimen 02
Total questions: 38
Worksheet time: 3hrs 10mins
What do you understand by the term “freeboard”?
Waterline to the keel
Waterline to the main deck
Waterline to the center of gravity
Waterline to the center of buoyancy
The depth a vessel sinks when afloat, as measured from the waterline to the lowest immersed part of the hull or bottom of the keel is called the
Draft
Freeboard
Heel
Deadweight
A vessel’s departure from upright, due to pressure of wind on one side, contact with the bottom, or turning under a large helm angle at high speed is defined as:
Trim
Heel
List
Draft
A vessel’s inclination to one side due to forces within such as an unequal lateral distribution of weights is defined as:
Trim
Heel
List
Draft
Define the term “deadweight”
The total weight of a ship remaining after deducting the weight of the cargo aboard
Under deck tonnage
The total weight of stores, bunkers, fresh water and cargo carried by a ship
The total weight of a ship and all its contents
The difference between the load drafts for salt water and fresh water for ocean going vessels is called:
water allowance
load line marks
fresh water allowance
draft lines
What would the ship’s stability condition be if the center of gravity coincided with the metacenter?
The ship would have excessive stability
The ship would be in a condition of neutral equilibrium
The ship would have positive GM
The ship would have negative GM
What dangers are involved in overloading?
a reduction of freeboard and adverse effect of this on stability
there is a greater possibility of structural damage by shipping heavy seas
injuries to crewmembers by heavy seas
none of the above
What is the danger of having a tank only partially filled?
The position of the metacenter moves creating an upsetting lever
G moves vertically upwards causing adverse effects on the vessel’s stability
When the ship heels the surface of liquid remains parallel to the waterline
There is no danger
How is the center of gravity affected if a weight is loaded, removed, or shifted on a vessel?
The center of gravity moves towards a weight removed
The center of gravity moves away from a weight loaded
When a weight is shifted within the vessel, the center of gravity is not affected
The center of gravity moves in the same direction as, and parallel to, weight added or shifted
F/V Skate has a displacement of 207.88 MT, trim data: Fwd 0.5 m. What is the corresponding MTC1cm?
2.84 t
2.48 t
3.15 t
2.77 t
A ship is floating in salt water at a mean draft of 2.6 meters. The waterplane area at this draft is 356m2. Find the TPC at this draft. (Show worked formula in the space below)
3.55 t
3.5 t
3.645 t
3.649 t
To avoid compromising the vessel’s stability:
Loose fish on deck should be processed as soon as possible and stowed in pens in the fish hold
Fish should be stowed loose in the fish hold
Either a or b is acceptable
None of the above
In the course of a voyage, fuel is consumed from tanks located in the bottom of the ship. What effect would this have on the stability of the ship?
It would increase the ship’s stability
It would decrease the ship’s stability
It would have no appreciable effect on the ship’s stability
It would improve the seaworthiness of the ship
What is the danger of excessive stern trim?
The vessel’s bow would ride higher in the water and helm control would be lost
The planing of the vessel would likely cause structural damage
It can affect the transverse stability and the GZ could be jeopardized
The steering gear compartment could become flooded and the autopilot may not work properly
The safe functioning of roll dampening paravane is largely dependent on:
The towing speed and on their complementary operation
The size and shape of the equipment
The type of vessel
All of the above
You are lifting a large set of fish with the ship’s boom. Where will the weight act?
at the lowest part of the net
at the center of the net
at the ship’s center of gravity
at the point of suspension
When icing conditions are encountered, the build-up of ice occurs rapidly and is usually high up on the ship around the masts, rigging, superstructure, etc. What effect would this have on the stability of the ship?
It would cause a rapid shift of G upwards
It would drastically lower the center of gravity
It would not affect G but the center of buoyancy would be raised considerably
The stability of the ship would not be affected but the dangers to crew of working on a slippery surface could be very hazardous
A vessel with inadequate freeing ports ships heavy water on deck. What effect would this have on the vessel’s stability?
The weight of the added water would cause the center of gravity to move vertically downward making the ship more stable
The water shipped on deck would cause a free surface effect which could have drastic consequences
It may either increase or decrease the vessel’s stability
Vessels are designed with adequate freeing ports so as to eliminate this threat from occurring
When a vessel designed and built for one type of fishing undergoes modifications for other types of fishing:
The center of gravity is often lowered due to addition additional gear
The center of gravity is often raised due to adding additional gear
The center of gravity always coincides with the metacenter when modifications are made
The center of gravity is not affected
Carrying heavier gear may compromise vessel stability and righting moments because:
There is a reduction of freeboard
The center of gravity will be raised
Deck edge immersion will occur at smaller angles of heel
All of the above
Metacentric height is:
The height of the metacenter above the center of buoyancy
The height of the metacenter above the main working deck
The height of the metacenter below the center of gravity
The height of the metacenter above the center of gravity
An inclining test is used to determine the vessel’s
GM
KG
KM
None of the above
What is meant by the term “transverse”?
It refers to the length of the vessel measured in a fore an daft direction
It refers to the depth of the vessel measured from the keel to the main working deck
It refers to a direction at right-angles to the centerline of the ship
It refers to all structural dimensions in ship construction
What is meant by the term “scantlings”?
It refers to the fore and aft direction along the length of the ship
It refers to the side to side or athwartships direction of the vessel
It refers to the depth of the vessel measured from the keel to the main working deck
It refers to all structural dimensions in ship construction
Camber refers to:
The side to side curvature of a vessel’s deck that allows for the running off of water
It refers to the inward curve of the vessel’s bow to direct spray away from the deck
An instrument used to sound tanks
The sloping of the deck in a fore and aft direction
Hatches refers to:
The cover that closes and opening in the deck
The raised portion of an opening in a vessel’s deck
The strengthened corners of openings in a vessel’s deck
The opening in a vessel’s deck
The bilge refers to:
A continuous horizontal fore and aft strip of plating from stem to stern
A drainage space within a vessel
A means of removing water from tank tops and holds
A horn used for calling the watch
What is an advantage of using aluminum alloy for the construction of vessels?
It is much cheaper than other materials
It requires much less maintenance
It is light weight and may aid stability
All of the above
What is/are the disadvantages of using Glass Reinforced Plastic (GRP) in vessel construction?
The choice of vessel is fixed once the mold is cast
Fire and health hazards from chemicals in construction
Cost
All of the above
To prevent water from flooding into holds and other spaces:
All hatches and watertight doors should be kept closed and properly dogged
Only those hatches and doors required for immediate use should be open
Hatches and doors only need to be closed when the vessel is steaming
Hatches and doors only need to be kept watertight in poor weather
Care should always be taken to ensure the quick release of water trapped on deck. Therefore:
The locking of freeing port covers is prohibited
Freeing port covers are not permitted
If locking devices are fitted, the opening mechanism should be easily accessible
None of the above
All side scuttles and deadlights should be maintained in good condition and:
Securely closed in bad weather
Remain open to allow the drainage of water
Have clear access to the bilge
Painted matt black
All vent pipes to fuel or water tanks should be:
Fitted with baffles
Capped and made watertight
Protected against the entry of water
All of the above
What will best aid in assuring the survivability of the vessel in the event of flooding?
The fitting of high water level alarms in all compartments including fish holds
Making rounds every watch should be added to standing orders to verify water levels
Floats and probes should be used in pairs, properly separated and fitted with means to verify the continuity of the circuits
All of the above
The hull of your vessel has been breached amidships just below the waterline on the port side. What is the best action to take?
Make a distress call and abandon ship
List the vessel to the starboard side, patch or plug the hole and call for assistance
Request a helicopter evacuation
Ensure the flooding is contained to only one compartment and try to get the vessel in port
Hoses used in the fuel tank fill system shall be secured to pipes or other fittings at each connection by:
At least 2 metallic clamps with a minimum band width of half inch
One metallic clamp with a minimum band width of ¾ inch
Two clamps of any size
None of the above
When a gas smothering installation is used in firefighting:
The compartment must be air tight
The compartment is evacuated before the gas is released
The compartment must be thoroughly ventilated before re-entry
All of the above conditions are met
