The correction to KG for longitudinal free surface effects f

An upright vessel has negative GM．GM becomes positive at the angle of loll because the ______．

A.Free surface effects are reduced due to pocketing

B.KG is reduced as the vessel seeks the angle of loll

C.Effective beam is increased causing BM to increase

D.Underwater volume of the hull is increased

Which statement about the free surface effect is TRUE ________．

A.It increases in direct proportion to the length of the tank times the breadth squared

B.It decreases at increased angles of heel due to pocketing when a tank is 90% full

C.It decreases in direct proportion to increasing specific gravity of the liquid in the tank

D.In practice，the correction is considered to be a virtual reduction of KG

When the________is large, the ship is stiff;and when it is small,she is tender.

A.GM

B.Free surface

C.Longitudinal center of gravity

D.transverse center of gravity

Floors aboard ship are ______．

A.frames to which the tank top and bottom shell are fastened on a double bottomed ship

B.transverse members of the ships frame which support the decks

C.longitudinal beams in the extreme bottom of a ship from which the ship's ribs start

D.longitudinal angle bars fastened to a surface for strength

The free surface effects of a partially full liquid tank decrease with increased ______．

A.Density of the liquid

B.Placement of the tank above the keel

C.Displacement volume of the ship

D.Size of the surface area in the tank

The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel's displacement into the ______．

A.Transverse free surface correction for the vessel

B.Sum of the vertical moments of the vessel

C.Sum of the longitudinal free surface moments of the vessel

D.Longitudinal centerline of the vessel

The free surface corrections depend upon the dimensions of the surface of the free liquids and the ______．

A.volume of liquid in the tank

B.displacement of the vessel

C.location of the tank in the vessel

D.height of the center of gravity of the vessel

Repairing damage to the hull of a ship at or above the waterline reduces the threat of ______.

A.free surface effects

B.capsizing the ship

C.continued progressive flooding

D.wind overturning moments

When displacement increases，the free surface corrections for slack tanks ______．

A.increase

B.decrease

C.are directly proportional

D.remain unchanged

A vessel’s KG is determined by ______.

A.dividing the total longitudinal moment summation by displacement

B.dividing the total vertical moment summation by displacement

C.multiplying the MTl by the longitudinal moments

D.subtracting LCF from LCB