a boat bucket
an air tank filled with water
an oar and canvas weighted down
All of the above
An emergency sea anchor may be constructed by using ______.A.a boat bucketB.an air tank filled with waterC.an oar and canvas weighted downD.All of the above
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Your anchor is caught under a rock .Your anchor may be （）.A、dammagedB、aweighC、upD、weight
Sea anchor是（）A、海锚B、海棉C、海水手电D、海水电池
单选题Releasing oil from the sea anchor of a survival craft may（）.A keep the propeller from being fouledB increase propeller speedC help calm the waves in the vicinity of the craftD increase the holding power of the sea anchor
单选题The fluke angle of an anchor system is the angle between the（）.A flukes and the shankB shank and the sea bottomC mooring line and the sea bottomD flukes and the shackle
单选题If you must land on a beach with an oar-propelled lifeboat through a heavy surf，the recommended method is to（）.A keep the bow directly in toward the beach，and tow the sea anchor off the sternB ride in on the back of a large breakerC keep the bow into the seas with the sea anchor out over the bow，and row to meet the breaking wavesD head directly into the beach by staying between the crests of the waves
单选题MOVING OF AN ANCHOR OVER THE SEA BOTTOM INVOLUNTARILY BECAUSE IT IS NO LONGER PREVENTING THE MOVEMENT OF THE VESSEL defines（）.A Dredging (of anchor)B Dragging (of anchor)C Weighing anchorD Walking out anchor
