In small-angle stability,when external forces exist,the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the().
A、center of gravity
B、center of flotation
C、metacenter
D、metacentric height
A、center of gravity
B、center of flotation
C、metacenter
D、metacentric height
A、the limit of positive stability B、the limit of small-angle stability C、maximum offset D、downflooding
A、KG is minimum B、angle of inclination is a maximum C、small-angle stability applies D、KM is a minimum
A、small an angle B、large an angle C、either small or large an angle D、neither small nor large an angle
A、at as small an angle as possible B、as nearly as practical at right angles to the general direction of traffic flow C、only in case of an emergency or to engage in fishing within the zone D、never
A、only in case of an emergency or to engage in fishing within the zone B、as nearly as practical at right angles to the general direction of traffic flow C、at as small an angle as possible D、only to anchor within the zone
A、only in case of an emergency or the engage in fishing within the zone B、as nearly as practical at right angles to the general direction of traffic flow C、at as small an angle as possible D、only to anchor within the zone
A、is found in the hydrostatic tables for a level vessel B、multiplied by the displacement yields the righting moment C、is always positive D、is calculated by subtracting KG from KM