Seam 2 V2

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Which of the following is the point where all the vertically downward forces of weight are considered to act?

Center of Buoyancy

How would you name the geometric center of the volume of the immersed portion of the vessel's hull?

Center of Buoyancy

Which of the following below is caused by the pressure exerted by the fluid on an immersed object?

Buoyancy force

The buoyancy force always points ______ pressure of a fluid increases with depth.

upwards

According to the Law of Archimedes, a floating body displaces its own weight of water. Which of the following shall be equal to

Weight of the vessel

How would you measure a ship's height of the Center of Buoyancy (B)?

It is measured up from the baseline or keel.

Which of the following increases and decreases as draft increases and decreases respectively?

KB or VCB

When a ship is upright, where shall a Center of Buoyancy (B) be located in a transverse direction?

It will be on the centerline

Which of the following has a fundamental purpose of allotting a maximum legal limit up to which a ship can be loaded by cargo?

Load line

It is the fresh water load line in Tropical marked above the Tat an amount equal to FWA?

TF - Tropical Fresh Water

A ship designed to carry only liquid cargoes in bulk, and in which cargo tanks have only small access openings, closed by watertight gasketed covers of steel or equivalent material is known as:

Type 'A' vessel

Which of the following types of vessel has an LBP of between 100 and 150 m and required to survive the flooding of any single compartment (excluding the machinery spaces?

Type (B-60) vessel

It is marked 50mm below the Winter load line applied to voyages in North Atlantic (above 36 degrees of latitude) during winter months

WNA - Winter North Atlantic

Which of the following refers to the number of millimeters by which the mean draft changes when a ship passes from salt water to fresh water (or vice versa) when floating at its loaded draft?

Fresh Water Allowance

Which of the following is the weight that must be loaded or discharged to change a ship's mean draft in sea water by one centimeter?

Tons Per Centimeter

How would you calculate the Volume Displacement of a box- shaped vessel?

Vol. Displacement = Length * Breadth x Draft

The ________ of a ship is the number of millimeters by which the mean draught changes when a ship passes from salt water to dock water, or vice-versa, when the ship is loaded to the summer displacement.

Dock Water Allowance (DWA)

What would happen to a ship's draft when ship moves into water of greater density?

Draft decreases

A vessel floats at a drafted of 12.5 m in water density of 1,005 kgs/cu meter. If her FWA is 187 mm, calculate for her draft on passing into the salt water.

12.35 m

The vessel has a Weight Displacement of 16,800 tons with a TPC of 22.28, Find the FWA in millimeters (mm)

189 mm

Which of the following shall you use to determine the Fresh Water Allowance (FWA) in inches?

FWA = Weight Displacement/40 x TPI

A vessel is in water density of 1,022 kgs/m³ has a draft of 9.82 m, FWA of 198 mm. She is to enter a port having a density of 1,010 kgs./m³. Find the DWA in meter.

0.09504 m

Which of the following is equal to the product of the righting lever and the displacement?

Moment of Statical Stability

The force of buoyancy acts vertically upwards through the Centre of buoyancy and the weight of the ship acts vertically downwards through the Centre of gravity. What is produced by these two equal and opposite forces that may tend to right or capsize the ship?

Moment or couple

At small angles of heel (15° and below), the force of buoyancy may be considered to act vertically upwards through a fixed point called the _______.

Initial Metacenter (M)

Which of the following is known as the righting arm or lever denoting as the perpendicular distance between the vertical through G and the vertical through B₁?

Which of the following is the difference between the height of the metacenter above keel and the height of the center of gravity above the ship's keel?

Metacentric Height

Which would you use in finding the Moment of Statical Stability or Righting Moment when ship is heeled to 15° and below?

Moment of Statical Stability = W x GZ

Which of the following would you use in finding the Moment of Statical Stability when the angle of heel is 15° and below?

Moment of Statical Stability = W x GM x sin θ°

A vessel is said to be which of the following when she is inclined by an external force such as wind or wave?

Heeled

Which of the following would you use in finding the GZ when the angle of heel is more than 15°?

GZ = (GM + ½ BM tan² θ) sin θ

A box-shaped vessel of 4,200 tons displacement has a GM of 0.5 m, a beam of 15 m, and floats at a draft of 4 m. Find the Moment of Statical Stability at 25° of heel where BM = B²/12 Draft.

1,792.50 tons meter

A vessel has a Stability moment of 11,250 tons-meter and a righting lever of 0.68 m. Solve for her displacement in tons.

16,544.12 tons

Your vessel displaces 21,500 tons with her Height of Metacenter above keel of 31.4 ft. and her Height of the Center of Gravity above keel of 25 feet. What would her righting arm be at an angle of heel of 10°?

1.11 ft.

When a ship of 12,000 tons displacement is heeled by 5°25' her Moment of Statical Stability is 300 tons-meter and her KG is 7.5 m. Solve for her metacentric height (GM) and the height of the metacenter above the keel (KM)

0.265 m, 7.77 m

Which of the following is the stability at small angles of inclination up to 15° since the metacenter is considered to be fixed?

Initial Stability

Which of the following equilibrium conditions describes the ship's tendency to return to her upright condition when inclined and possesses a positive metacentric height (GM)?

Stable equilibrium

What equilibrium condition will occur when M is below the ship's G thereby having a negative GM and loll, and would tend to capsize due to capsizing moment?

Unstable equilibrium

Which of the following is not included in the criteria where ship has possessed a neutral equilibrium?

Has positive GM with M above G

What condition of the ship will occur when she has small GM and GZ, slow and easy motion, slow roll, long roll period and with high KG?

Tender

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