A.continue ahead at slow speed
B.continue ahead at half speed
C.stop your engines
D.back down on your engines
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A.Jack down one leg at a time
B.Jack up first，then down
C.Undog doors to the engine room
D.Assemble all personnel on the main deck
A.Ensure the bight is not fouled by taking up slack
B.Pay out the line smartly and keep it free for running
C.Secure the line by adding more turns
D.Surge the line so it maintains a strain without parting
A.Using a medium graphite grease as a lubricant
B.Operating a winch too slow
C.Using a sheave with an undersized throat
D.A sheave diameter of 24 times the wire's diameter
A.Detachable
B.Open
C.Pear shaped
D.Stud link
A.Single whip
B.Gun tackle
C.Luff tackle
D.Twofold purchase
最新試題
When hoisting a boat on gravity type davits using an electric motor driven winch，the davit arms should be brought up（）.
The process of lowering a boom to a horizontal position and onto its deck support is called（）.
What（）to him is whether the job of a deck officer allows him to pursue his studies.
What danger is presented if a waterspout passes over a ship?（）
Fueling activities（）waste liquids and vapor releases to air.
What is TRUE about hoisting operations?（）
Any Works completion date quoted by the Repairer is an estimate only and the Repairer shall not be（）liable for any failure to complete the Works by that date.
The vessel or other goods upon which the Works have been carried out must be（）from the Repairer’s worksite within 3 days after the invoice date or in accordance with other written notification by the Repairer to the Customer.
When lowering lifeboats in heavy seas，a good practice is to rig frapping lines（）.
Which tackle arrangement has the LEAST mechanical advantage（）.