A semisubmersible rig under tow should be ballasted down if ______.A.motion begins to be excessiveB.water begins to break over the pontoonsC.period of roll exceeds 12 secondsD.forward progress is halted by head wind

题目

A semisubmersible rig under tow should be ballasted down if ______.

A.motion begins to be excessive

B.water begins to break over the pontoons

C.period of roll exceeds 12 seconds

D.forward progress is halted by head wind

相似考题

1.A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started?A.When the towing vessel enters the fogB.When the drilling rig enters the fogC.When the towing vessel can no longer be seen from the rigD.Immediately

2.To determine what navigation lights and day-shapes must be displayed on mobile offshore drilling units under tow，you should check the ______.A.American Bureau of Shipping classification rulesB.International Regulations for Preventing Collisions at SeaC.Safety of Life at Sea ConventionD.Minerals Management Service rules

3.You intend to tow a barge with one tug and expect continuous high winds from the north．To reduce the yaw of your tow，you should ______．A.reduce the draft of the bargeB.shorten one leg of the bridleC.place bulky deck loads as far aft as possibleD.trim the barge down by the bow

4.If a man falls overboard from a rig under tow，you should FIRST ______.A.notify the tugB.deploy life bouysC.launch a boatD.sound the general alarm

参考答案和解析
正确答案：A
更多“A semisubmersible rig under tow should be ballasted down if ______.A.motion begins to be e ”相关问题

  • 第1题：

    When a winch breaks down，or some similar occurrence makes only one winch available at a hatch，which alternate rig would provide a temporary solution while repairs are made ________．

    A.Frisco Rig

    B.Split fall rig

    C.West Coast Rig

    D.Yard and stay jury rig


    正确答案：D

  • 第2题：

    单选题
    For operations in pack ice，a vessel should（）.
    A

    be on an even keel

    B

    be trimmed slightly by the head

    C

    have a drag of not more than 60 - 90 centimeters

    D

    be ballasted so the forefoot is near the surface


    正确答案： B
    解析： 暂无解析

  • 第3题：

    单选题
    If a man falls overboard from a rig under tow，you should FIRST（）.
    A

    notify the tug

    B

    deploy life bouys

    C

    launch a boat

    D

    sound the general alarm


    正确答案： B
    解析： 暂无解析

  • 第4题：

    单选题
    If a single cylinder relief valve on a main propulsion diesel engine begins to lift, but it is not possible to secure the engine, which of the following actions should be taken?（）
    A

    Increase the cooling water flow to the engine

    B

    Secure or reduce fuel to that cylinder

    C

    Screw down on the pressure adjusting spring to decrease to decrease popping pressure

    D

    Readjust the injection timing


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    If the freeboard is more than 9 meters, we should rig（）.
    A

    gangway

    B

    ladder

    C

    pilot ladder

    D

    gangway combined with pilot ladder


    正确答案： D
    解析： 暂无解析

  • 第6题：

    单选题
    In observing rig motion while under tow，the period of roll is the time difference between（）.
    A

    zero inclination to full inclination on one side

    B

    full inclination on one side to full inclination on the other side

    C

    full inclination on one side to the next full inclination on the same side

    D

    zero inclination to the next zero inclination


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    After deploying the anchor，a permanent chain chaser is（）.
    A

    removed from the anchor chain

    B

    connected to a buoy at the anchor

    C

    stripped back to the rig and secured

    D

    connected to a buoy halfway down the chain


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    When steering a tow downstream around the shape of a sand bar，and staying on the proper side of the buoys，an operator should be cautious of（）.
    A

    eddies under the bar

    B

    swift current under the bar causing loss of control

    C

    cross-currents pushing the tow away from the bar

    D

    cross-currents pushing the tow into the bar


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    A ballasted vessel sinks enroute to a drydock. Under these circumstances，the vessel’s owner can claim（）.
    A

    actual total loss

    B

    constructive total loss

    C

    general average

    D

    particular average


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    To determine what navigation lights and day-shapes must be displayed on mobile offshore drilling units under tow，you should check the（）.
    A

    American Bureau of Shipping classification rules

    B

    International Regulations for Preventing Collisions at Sea

    C

    Safety of Life at Sea Convention

    D

    Minerals Management Service rules


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    You intend to tow a barge with one tug and expect continuous high winds from the north. To reduce the yaw of your tow，you should（）.
    A

    reduce the draft of the barge

    B

    shorten one leg of the bridle

    C

    place bulky deck loads as far aft as possible

    D

    trim the barge down by the bow


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    A semisubmersible rig under tow should be ballasted down if（）.
    A

    motion begins to be excessive

    B

    water begins to break over the pontoons

    C

    period of roll exceeds 12 seconds

    D

    forward progress is halted by head wind


    正确答案： B
    解析： 暂无解析

  • 第13题：

    Apparent wind speed blowing across a vessel under tow can be measured by a(n)______．

    A.barometer

    B.wind vane

    C.anemometer

    D.Thermometer


    正确答案：C
    视风是通过安装在船上的风速仪测得的。

  • 第14题：

    单选题
    A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started? （）
    A

    When the towing vessel enters the fog

    B

    When the drilling rig enters the fog

    C

    When the towing vessel can no longer be seen from the rig

    D

    Immediately


    正确答案： D
    解析： 暂无解析

  • 第15题：

    单选题
    The four-stroke cycle begins with the piston （）.
    A

    coming up from the BDC

    B

    coming up from the TDC

    C

    coming down from the BDC

    D

    coming down from the TDC


    正确答案： A
    解析： 暂无解析

  • 第16题：

    单选题
    You have a large，broken-down vessel in tow with a wire rope and anchor cable towline. Both vessels have made provision for slipping the tow in an emergency; however，unless there are special circumstances（）.
    A

    the towing vessel should slip first

    B

    the vessel towed should slip first

    C

    they should slip simultaneously

    D

    either vessel may slip first


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    A tug is approaching a broken down steamer in moderately heavy weather preparing to take it in tow. In most cases the（）.
    A

    steamer will drift stern downwind

    B

    tug will drift faster than the steamer

    C

    tug should approach stern to

    D

    tug should approach from downwind


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    If a vessel under tow starts jumping on its tow line，the most appropriate action to alleviate the condition is to（）.
    A

    change course

    B

    slow down

    C

    heave to

    D

    adjust tow line length


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    What is NOT suitable for use in making up the towing rig for a heavy，long ocean tow?（）
    A

    Chain

    B

    Ring

    C

    Solid thimble

    D

    A fishplate


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    Apparent wind speed blowing across a vessel under tow can be measured by a(n)（）.
    A

    barometer

    B

    wind vane

    C

    anemometer

    D

    thermometer


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    A ballasted vessel sinks enroute to a dry dock. Under these circumstances，the vessel’s owner can claim（）.
    A

    actual total loss

    B

    constructive total loss

    C

    general average

    D

    particular average


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    Under what condition are you allowed to depart from the rules of the road（）.
    A

    To avoid immediate danger

    B

    When authorized by the rig superintendent

    C

    To comply with an operator's requirement

    D

    Under no conditions


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    A towing vessel should be on the crest of a wave at the same time as its tow and in the trough at the same time. The term used to describe this is（）.
    A

    tow strain

    B

    catenary length

    C

    being in step

    D

    Williamson's Tow


    正确答案： B
    解析： 暂无解析

相关内容