SEAM 2 Finals Reviewer

"Maximum Righting Arm: The largest separation between the forces of buoyancy and gravity. This is where the ship exerts the most energy to right itself."

• It's a fact

• It depends on the breath of the ship

• It's just an opinion

• It's not true at all

"Angle Of Maximum Righting Arm: The angle of declination where the maximum righting arm occurs."

• it's a fact

• it depends on the degree of declination

• it's just an opinion

• it's not true at all

The ships center of gravity is located above the metacenter, as the ship is inclined, positive righting arms (called upsetting arms) are created which tend to capsize the ship.

• it's a fact

• it depends on the breadth of the ship

• it's not true at all

• maybe true

The Centre Of Buoyancy (B) ______________.

• is the centre of the underwater volume of the ship

• acts vertically downwards

• does not change location when the ship heels

• does not change when the ship trims

Which of the following is the point of intersection of successive buoyancy force vectors as the angle of heel increases by a small angle?

• transverse metacenter

• longitudinal metacenter

• keel

• center of buoyancy

How could you determine that free surface effect is apparent without using any formula

• any tank or compartment that you have partially filled, the motion of the liquid (due to the ship's rolling and pitching motions) would reduce the stability of the ship.

• any tank or compartment that you have fully filled, the motion of the liquid (due to the ship's rolling and pitching motions) would reduce the stability of the ship.

• any tank or compartment that is empty would cause racking motion thereby reducing the stability of the ship

• none is true

In a listed condition ________________________________.

• the range of stability of the ship is reduced

• the range of stability of the ship is increased

• trimming moment is increased

• trimming moment is reduced

What outcome would you predict for a ship-owner of a tanker shipping company deciding to provide 2 longitudinal bulkheads for every vessel that he owns?

• free surface moment and loss of GM will be significantly reduced to 1/4 of the original value

• free surface moment and loss of GM will be significantly reduced to 1/9 of the original value

• free surface moment and loss of GM will be significantly reduced to 1/5 of the original value

• free surface moment and loss of GM will be significantly reduced to 1/6 of the original value

How would you check to see the FSE in a rectangular shaped vessel?

• use the formula W= V x DS to determine the FSE

• use the formula GGV= LB^3 x DT/ 12V to determine the FSE

• use the formula GGV= LB^3 x DT/ 12W to determine the FSE

• none of the above

What outcome would you expect for a vessel transiting polar areas and carrying unheated liquid cargo?

• icing will occur but the vessel's cargo will not be affected

• there will be no icing effect on the vessel because the temperature of the ship's internal system will prevent it from happening

• icing will occur and a rise in the center of gravity will happen

• rise in the center of gravity will happen but not because of icing but because of the free surface effect