WorksheetsSample 2
Total questions: 38
Worksheet time: 6hrs 20mins
The combination of a force applied at a distance is called a:
Lever
Heel
Moment
Righting Lever
In the course of a voyage, a vessel is passing from salt water to fresh water. What would be the effect?
It would increase the trim by the stern
It would increase the trim by the head
It would decrease the draft
It would increase the draft
What would the ship’s stability condition be if the ship, inclined to a small angel of heel, tends to heel over even further:
The ship would have excessive stability
The ship would be in a condition of neutral equilibrium
The ship would be in a condition of unstable equilibrium
The ship would have positive GM
What would be the proper way to correct unstable or neutral equilibrium?
Weights already in the ship could be lowered
Weights could be loaded below the center of gravity in the ship
Free surface within the ship could be removed
All of the above
In vessel’s stability, a righting moment is?
A measure of a vessel’s ability to stay in a stable condition
A measure of a vessel’s ability to return to her initial position
A measure of the vessels ability to stay listed
None of the above
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 planeing of the vessel would usually 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
When a ship has a comparatively large GM, the righting moments at small angles of heel will also be comparatively large:
When inclined she will tend to return more slowly to the initial position
When inclined she will tend to return more quickly to the initial position
When inclined she will tend to stay in this position
When inclined she will tend to be in a condition of unstable equilibrium
When conducting a rolling test to determine ship stability, a complete oscillation is
From one side to the other extreme side
From one side to the other extreme side and return to the amidships position
From one side to the other extreme side and return to the original starting point
From one side to amidships position
A proper way to correct a negative GM would be?
. De-ballasting from low tanks
Loading cargo on deck
Discharging half of the fresh water tanks
Taking ballast in low tanks
A ship with an initial negative GM may take up an angle of loll at this position?
Because there is no GZ righting lever, the vessel may flop from side to side
Because there is not GZ righting lever, the vessel may return to its original position
Because there is no GZ righting lever, the stability of the vessel will be stable
None of the above
11. A ship has a KM of 3.60M and a GM (solid) of 1.20M. If the free surface correction were .05M, what would be the GM (liquid)?
GM (liquid) = 2.35M
GM (liquid) = 2.45M
GM (liquid) = 1.25M
GM (liquid) = 1.15M
What dangers are involved in overloading?
A reduction of freeboard and the adverse effects of this on stability
There is a greater possibility of structural damage by shipping heavy sea
Injuries to crew members by heavy seas
None of the above
You are lifting a large set of fish with the ships boom. Where will the weight act?
At the lowest part of the net
At the center of the net
At the side you hoisted on
At the point of suspension
14. Fishing vessel operators using stabilizers should observe the following:
Carry nautical charts for the area to avoid underwater dangers
Be prepared to take immediate action in the event of a failure to the stabilizer system
Fish safely and check the stabilizer system regularly
All of the above
When icing conditions are encountered, the buildup 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 dangerous
When a vessel, designed and built for one type of fishing, undergoes modification for other types of fishing:
The center of gravity is often lowered due to additional fishing gear
The center of gravity is often raised due to additional fishing gear
The center of gravity always coincides with the metacenter when modifications are made
The center of gravity is not affected
“Watertight” means
That in any sea condition water will not penetrate into the vessel
Protection against splashing water
Capable of preventing the passage of water through the structure in any direction under a head of water for which the surrounding structure is designed
Protection against water drops falling at an angle of up to 15° from the vertical
In the construction of fishing vessels, beams and frames:
Should be properly aligned and efficiently connected
Each beam should be properly connected to two frames to spread the load
Do not need to be aligned as long as they are efficiently attached to the deck and hull
Should not be aligned to avoid stress concentrations in structural members
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 center of gravity
Vessels are designed with adequate freeing ports so as to eliminate this threat from occurring
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
To prevent water from flooding into holds and other spaces aboard:
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
Bulkheads in a decked fishing vessel have to be:
Of strong construction but should not be totally watertight to avoid that possible incoming water be trapped in a particular compartment
Totally watertight to give the vessel reserve buoyancy in case of water ingress but do not play any specific role in the structural resistance of the vessel
Of strong construction and watertight to prevent a reduction of GM due to free surface effect in case of water ingress in some compartments
Of strong construction, as they play a role in the structural resistance of the hull and need to withstand the water pressure created in a flooded compartment and watertight to give the vessel reserve buoyancy
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 hold, call for assistance
Request a helicopter evacuation
Ensure the flooding is contained to only one compartment and try to get the vessel to port
Water is flowing from a large split piping and is flooding the vessel. It could best be temporarily repaired by:
Inserting quick cement into the split piping
Using polyester resin and fiberglass mat on the split piping
Wrapping a piece of fabric, like one made from foul weather gear and tie it tightly with cord
Pounding conical soft wood plug into the split piping
26. Hoses used in the fuel tank fuel system shall be secured to pipes or other fittings at each connection, by:
At least 2 metallic clamps with a minimum band width of ½ inch
One metallic clamp with a minimum band width of ¾ inch
Two clamps of any size
None of the above
Which of the following statements about operating handles of control valves of a CO2 smothering system is FALSE:
They should be clearly and permanently marked to indicate the compartment they protect
They should be of the quick opening type to avoid wire drawing and consequent freezing
They shall be readily accessible from a location outside the compartment that they protect
They shall trigger the general alarm bell on the vessel
All parts of hauling gear, hoisting gear and related equipment should be:
Maintained in good working order
Tested and examined at periodic intervals
Guarded or fenced, if moving parts present a hazard
All of the above
The Marine Safety Inspector’s function when inspecting a fishing vessel is:
To find all non-compliant items
To issue an inspection certificate and a marine safety notice of remaining items to be done
To establish that the vessel, its machinery or equipment meet the requirements for the issuance of a Canadian Marine Document (CMD)
To make sure that the authorized representative has been issued a Canadian Marine Document (CMD)
When preparing a fishing vessel for inspection, the authorized representative or master should:
Make sure to get from a Marine Safety Inspector a list of things to be done
Make sure to get from a Marine Safety Inspector the list of items to be corrected
make sure himself that the vessel complies with all requirements before requesting the presence of the Marine Safety Inspector
wait before testing anything that a Marine Safety Inspector is available, to avoid testing items twice
F/V Skate has a displacement of 270MT and a FWD trim of 1.5m. What will be the value of the righting arm at an assumed KG of 0.0m (KN) if the vessel heels to 20 degrees?
a. 1.025m
b. 1.500m
c. 1.563m
d. 1.575m
F/V Skate has its Port and Starboard holds filled to 20% of their capacity with refrigerated salt water of 1.025 specific gravity. What is the height of the vertical center of gravity of the refrigerated salt water contained in the two tanks?
0.200
2.707
5.414m
6.85m
F/V Skate has its Fuel FWD Port tank filled to 40% of its capacity with fuel oil of 0.87 specific gravity. Find the free surface moment for this tank?
a. 3.28MT-m
b. 3.91MT-m
c. 4.12MT-m
d. 5.25MT-m
F/V Skate has a displacement of 231MT and a FWD trim of 1.0m. Find the new draft if a weight of 8 metric tons is loaded?
3.25m
3.30m
3.35m
3.40m
F/V Skate has a draft of 4.35m and a FWD trim of 0.5m. Find the GM if the vessel’s KG is 3.20m?
1.77m
1.35m
3.96m
7.75m
F/V Skate has a FWD trim of 1.0m, a displacement of 310MT and VCG of 3.93m. Does the vessel comply with all stability criterions?
Yes, because LIM1to LIM6 are all positive
Yes, because LIM4 is still 9%
No, because the Maximum permitted VCG exceeds the vessel’s VCG
No, because the vessel’s VCG exceeds the Maximum permitted VCG
In F/V Skate condition 9 “worst operating condition with topsides ice port arrival full load 10% consumables”, how much ice has been considered accumulated on topsides?
6.13MT
7.01MT
20.32MT
33.56MT
In F/V Skate condition 9 “worst operating condition with topsides ice port arrival full load 10% consumables”, at what angle of heel will deck edge immersion occur?
At 7.163°
At 10.78°
At 28.75°
At 49.27°
