SEAM6(MIDTERM)

60問 • 1年前

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How will the center of buoyancy behave when a vessel is inclined at a small angle? A. Moves toward the high side B. Remains stationary C. Moves toward the low side D. Moves toward the Metacenter

How would you identify the perpendicular distance between the lines of action of the vertically upward buoyant force of the water and the vertically downward weight force of the ship? A. KB B. GZ C. KM D. GM

Which formula will you use to calculate the metacentric height? A. KM + BM B. KM - GM C. KM - KG D. KB + BM

Which of the following shall you use in determining the Stability Moment or righting Moment? A. RM = Weight displacement x Righting Lever B. RM = Weight displacement + GZ C. RM = Weight displacement - GZ D. RM = Sin θ x GM

What results when the height of the center of gravity is added to the metacentric height? A.GZ B. Height of the metacenter C. Metacentric radius D. Righting arm or lever

Which of the following shall you use in finding the metacentric radius for a triangular prism (v- shaped vessel? A. BM = B2/(6 x Draft) B. BM = I/V C. BM = (k x B2)/D D. BM = B2/(12 x Draft)

Which of the following will you use in finding GZ when ship heels at small angle of 10˚ and below? A. GZ = [ GM + (1/2 BM x Tan2 θ) ] x Sin θ B. GZ = W x GM C. GZ = Sin θ x GM D. GZ = Tan θ x GM

Which of the following will you use in finding GZ when your ship heels at an angle of 15˚? A. GZ = [ GM + (1/2 BM x Tan2 θ) ] x Sin θ B. GZ = W x GM C. GZ = Sin θ x GM D. GZ = Tan θ x GM

Your ship has a displacement of 8,900 tons. The KM is 9.4 m and her KG is 7.62 m. Calculate the righting Lever when her angle of inclination is 5˚ A. 0.138 m B. 0.155 m C. 1.78 m D. 0.178 m

A box-shaped vessel is 24 m x 5 m x 5 m and floats on an even keel of 2 m draft. Calculate the initial metacentric height (GM) if her KG is 1.5 m. A. 0.24 m B. 0.34 m C. 0.44 m D. 0.54 m

Which of the following is not included in the simplified form of the supplied Stability Information? A. Diagram or table of maximum deadweight moment B. Diagram or table of minimum permissible GM C. Diagram of GZ curves and Trimming Table D. Diagram or table of maximum permissible KG related to the displacement or draft in saltwater

Which of the following is the mass in tons multiplied by the vertical height of the mass above the keel? A. Deadweight Moment B. Stability Moment C. Free Surface Moment D. Moment of Statical Stability

What is to be added to the deadweight moment when using the diagram of maximum deadweight moment? A. Moment of Statical Stability B. Stability Moment C. Free surface Moment D. Righting Moment

It is a form of simplified stability data diagram in which a curve of Maximum Permissible Deadweight Moments is plotted against displacement in tons on the vertical axis and Deadweight Moment in tons meter on the horizontal axis. A. Maximum Permissible Deadweight Moment Diagram B. Maximum Permissible GM Diagram C. Maximum Permissible KG Diagram D. Minimum Permissible GM Diagram

Which of the following must not exceed at any displacement under any circumstances in the use of the ship’s Maximum Permissible Deadweight Moment Diagram? A. Total Free Surface Moment B. Total Deadweight Moment C. Total Stability Moment D. Total Moment of Statical Stability

Aboard a vessel, dividing the sum of the vertical moments by the total weight yields the vessel’s: A. Height of the center of gravity B. Righting moments C. Inclining moments D. Longitudinal moments

A vessel is “listed” when it is _______________. A. inclined due to an off-center weight B. inclined due to the wind C. down the head D. down by the stern

Forces within a vessel have caused a difference between the starboard and port drafts. This difference is known as ______. list heel trim floatation

List

If your vessel has taken a slight list from the off-center loading of material on deck, the ________. A. list should be easily removed B. mean draft is affected C. vessel may flop D. vessel is trimmed

A vessel that displaces 28,500 tons has a KG of 30 ft., 1,550 tons are discharged with a center of gravity of 12 ft. above the keel. What would be the new center of gravity? A. 31 ft. B. 30 ft. C. 29 ft. D. 32 ft.

The vessel displacing 18,000 short tons and has a VCG of 70 ft. You dump 100 short tons of water, which had a VCG of 88 ft., what is the new KG? A. 30 ft. B. 89.9 ft. C. 69.9 ft. D. 31 ft.

Which of the following shall you use in finding the angle at the metacenter in the right-angled triangle GGHM or GG1M known as List? A. Tan θ = GM/GGH B. Tan θ = GGH/GM C. Sin θ = GZ/GGH D. Sin θ = GGH x GM

Which of the following is the formula used for finding the shift of G(GGH GG1) when a weight is shifted from the main deck to the lower hold? A. GG1 = w x d/W B. GG1 = w x d/W – w C. GG1 = w x d/W + w D. GG1 = w x d/W x w

Which of the following is the formula for finding the resultant List during the shifting of weight? A. Tan List = w x d/GM B. Tan List = w x d/Displacement C. Tan List = w x d/GM x displacement D. Tan List = w x d/GM + displacement

An upright ship displaces 12,000 tons and has a KG of 6.7 m and KM of 7.3 m. A weight of 60 tons already on board is shifted 14 m horizontally across the deck. Determine the resulting angle of list. A. 5.5˚ B. 6.7˚ C. 7.6˚ D. 8.2˚

6. Which of the following is the amount of work which must be done on a ship to heel it to some angle, and is represented by the area under the righting moment curve up to that angle? A. Damage Stability B. Transverse Stability C. Dynamical Stability D. Longitudinal Stability

Which of the following is the emphasis of the Dynamic Stability? A. Calculates the amount of work done by the righting moment given the inclination of the ship. B. Calculates the righting arm or moment given the inclination of the ship. C. Calculates the righting arm or moment given the metacentric height of the ship. D. Calculates the righting arm or moment given the metacentric radius of the ship.

A ship of 10,000 tons displacement has righting levers as follows: Heel 10º 20º 30º 40º GZ (m) 0.09 0.21 0.30 0.33 Calculate the dynamical stability to 40 degrees heel.

1,344 meters

Which of the following shall you use in finding the Dynamical Stability?

Dynamical Stability = Weight Displacement x Area under the Stability Curve

Which of the following is the formula for finding the Area under the Stability Curve? A. Area under the Stability Curve = 2/3 x Common Interval x Sum of Functions B. Area under the Stability Curve = 3/8 x Common Interval x Sum of Functions C. Area under the Stability Curve = 5/8 x Common Interval x Sum of Functions D. Area under the Stability Curve = 1/3 x Common Interval x Sum of Functions

It is defined as the work done in inclining a ship. A. Dynamical Stability B. Damage Stability C. Transverse Stability D. Longitudinal Stability

Which of the following tests details the method of determining the lightship GM in accordance with the Annex 3 of the Code on Intact Stability for all Ships ? A. Rolling Period Test B. GM Test C. Heaving Period Test D. Pitching Period Test

The time required to incline from port to starboard and back to port again is called__________. A. Pitching period B. Rolling Period C. Heaving period D. Surging period

Which of the following shall you use in finding the Rolling Period or T when beam is in meter/s?? A. T = 0.44 x Beam/GZ B. T = 0.44 x Beam/√GM C. T = 0.797 x Beam/√GM D. T = 0.797 x Beam/√KG

The metacentric height of your vessel is 3.4 meter. Her displacement at summer draft is 35,000 tons and her beam is 18.3 meters. Solve for her rolling period. A. 10 seconds B. 25 seconds C. 30 seconds D. 38 seconds

Which will you use in finding the GM when Beam is in meter/s? A. GM = ( 0.797 x Beam/T )2 B. GM = ( 0.44 x Beam/T)2 C. GM = (0.44 x GZ/T)2 D. GM = 0.797 x KG/Beam)2

Your vessel with a beam of 72 feet has an average rolling period of 18 seconds. Find her metacentric height(GM). A. 1.10 feet B. 2.10 feet C. 3.10 feet D. 4.10 feet

Your vessel has a beam of 110 feet and a GM of 4.8 feet. What will be her rolling period? A. 12.1 seconds B. 22.1 seconds C. 32.1 seconds D. 42.1 seconds

In T = 0.797 x Beam/√GM, what does the letter T represent as a rolling period? A. Minutes B. Degrees C. Seconds D. Milliseconds

Your ship’s rolling period is 10 seconds, and a beam of 50 feet. Solve for the GM. A. 2.84 feet B. 3.84 feet C. 4.84 feet D. 5.84 feet

Which of the following shall you use in finding Rolling Period(T) when Beam and GM are in meters? A. T = 0.44 x Beam/GZ B. T = 0.44 x Beam/√GM C. T = 0.797 x Beam/√KG D. T = 0.797 x Beam/√GM

Which of the following types of vessel is not covered by the Intact Stability Code? A. Cargo ship B. Timber carrier C. Ship of war D. Grain carrier

It refers to a mechanically self-propelled ship carrying > 12 special personnel, engaged in research, survey, expeditions, and training of marine personnel as decided by the Flag State. A. Semisubmersible B. Training vessel C. Multi-purpose vessel D. Special purpose ship

In Intact Stability Code, the following are the criteria mandatory for passenger and cargo ships constructed on or after 1st January 2010, except the:

The area under the righting lever curve (GZ curve) should not be less than 0.065 meter-radians up to 30° angle of heel.

Which of the following fields of study deals with the stability of a surface ship when the intactness of its hull is maintained, and no compartment or watertight tank is damaged or freely flooded by seawater? A. Damage stability B. Intact Stability C. Reserve stability D. Inherent stability

In GZ curve, what does the GZ refer to? A. Righting arm B. Center of floatation C. Moment of trim D. Righting moment

In what year was the Intact stability Code revised and now in its the latest version? A. 2020 B. 2008 C. 2010 D. 2012

What is the formula used in finding GZ in the GZ curve? A. GZ = GM – KG Cos θ B. GZ = KN – KG Sin θ C. GZ = BM – KG Sin θ D. GZ = KN – KG Cos θ

Which document contains sufficient information to enable the master to operate the ship in compliance with the applicable requirements contained in the IS Code? A. Stability booklet B. Deadweight booklet C. Ship’s general plan D. Maneuvering booklet

What is the IMO Code on Intact Stability? A. IS Code 1993 rev 2008 B. IS Code 2008 rev 2010 C. IS Code 2008 rev 2020 D. IS Code 1993 rev 2019

How many criteria are laid out as per the International Code on Intact stability, 2008? A. 8 B. 5 C. 6 D. 7

Which of the following results when the weight of the shifted grain is multiplied by the horizontal Distance between the initial and final centers of gravity? A. Volumetric Heeling Moment B. Grain Upsetting Moment C. Grain Heeling Moment D. Grain Stability Moment

The residual area between the righting arm curve and heeling arm curve shall not be less than__________. A. 0.075 meter-radian B. 0.045 meter-radian C. 0.035 meter-radian D. 0.025 meter-radian

The angle of heel due to the shift of grain shall not be greater than what angle? A. 5˚ B. 10˚ C. 12˚ D. 15˚

The initial metacentric height (GM), after correction for the free surface effects of liquids in tanks, shall be not less than________. A. 0.50 m B. 0.40 m C. 0.30 m D. 0.20 m

Which of the following shall you use in calculating the Heeling Arm(λo)? A. Heeling Arm(λo) = Volumetric Heeling Moment/displacement B. Heeling Arm(λo) = Volumetric Heeling Moment/Stowage factor C. Heeling Arm(λo) = Volumetric Heeling Moment/(Stowage factor + displacement D. Heeling Arm(λo) = Volumetric Heeling Moment/(Stowage factor x displacement)

Which among the documents is issued to many ships accepted as an evidence that the ship is capable of complying with the requirements of the International Grain Code (IG Code)? A. Document of Compliance (DOC) B. Document of Authorization (DOA) C. Certificate of Authorization (COA) D. Certificate of Compliance (COC)

28. Which of the following shall the master ensure as part of the intact stability requirements compliance detailed in the IG Code before proceeding to sea after loading the grain cargo? A. The ship must be well-trimmed B. The ship must be upright C. The ship has met the minimum GM D. The has a satisfactory Heeling Moment

Which of the following is not included in the Intact Stability Requirements of any ship carrying bulk grain? A. The initial metacentric height (GM), after correction for the free surface effects of liquids in tanks, shall be not less than 0.30 meter. B. The angle of heel due to the shift of grain shall not be greater than 12˚. C. In the Statistical Stability diagram, the residual area between the righting arm curve and heeling arm curve shall not be less than 0.075 meter-radian. D. After unloading, the master shall ensure that the ship is well-trimmed before proceeding to sea

Which of the following shall you use in calculating the Heeling Moment? A. Heeling Moment = Volumetric Heeling Moment/Stowage Factor B. Heeling Moment = Volumetric Heeling Moment/Displacement C. Heeling Moment = Volumetric Heeling Moment/Stowage Factor x distance D. Heeling Moment = Volumetric Heeling Moment/Stowage Factor - Displacement

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