航海英语(甲类船长)船舶结构与设备单选题练习1
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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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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
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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
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Which space（s）is（are）deducted from gross tonnage to derive net tonnage ________．
- A.Galley fitted with range or oven
- B.Open structures
- C.Passenger spaces
- D.Boatswain's stores
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Which statement about the hospital space on a cargo ship is TRUE ________．
- A.The hospital may be used for disciplinary confinement if it is not being used for treatment
- B.The hospital space must have both a bathtub and shower
- C.A hospital is required on all vessels with a crew of 12 or more if it makes overnight voyages
- D.If a ship has a crew of forty-five who do not have their own room，the hospital must have four berths
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Which term refers to a transverse curvature of the deck ________．
- A.Deadrise
- B.Camber
- C.Freeboard
- D.Flare
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Which space（s）is（are）deducted from gross tonnage to derive net tonnage ________．
- A.Boatswain's stores
- B.Companions and booby hatches
- C.Passenger spaces
- D.All of the above
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Which space cannot be deducted from gross tonnage when calculating net tonnage ________．
- A.Crew messroom
- B.Forepeak ballast tank
- C.Master's cabin
- D.Chain locker
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Which of the following tensioning devices is used with webbing to secure light vehicles aboard Ro-Ro vessels ________．
- A.Chain lever
- B.Buckle tensioner
- C.Adjust-a-matic tensioner
- D.Turnbuckle
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Which arrangement of shell plating is used most in modern shipbuilding ________．
- A.Clinker
- B.Flush
- C.In-and-Out
- D.Joggled
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