单项选择题

Your vessel has a midships engine room and the cargo is concentrated in the end holds．The vessel is（）.

A.sagging with tensile stress on main deck
B.sagging with compressive stress on main deck
C.hogging with tensile stress on main deck
D.hogging with compressive stress on main deck

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热门试题

单项选择题

Why is it necessary to extend ventilators of gasoline powered vessels to the bilges（）.

A.To keep them dry，and thus easier to clean
B.To remove fuel vapors which are heavier than air
C.To provide adequate air to the engines
D.To cool the machinery areas

单项选择题

While cranking out a quadrantal davit，slippage of the quadrant due to excessive wear or failure of the teeth in the quadrant will cause the（）.

A.Davit arm to pivot on the traveling nut and the head to fall outboard
B.Traveling nut to lock up in place on the worm gear
C.Limit switch to engage and hold the traveling nut in position
D.Winch brake to lock in position and prevent lowering the boat