漂砾（drift boulder）
漂砾（drift boulder）
相关考题：
When one upbound vessel is overtaking another vessel and both are pushing a tow ahead，what reaction may you expect ________．A.Both towheads will tend to drift apart，and the overtaking vessel will be slowed downB.Both towheads will tend to drift together，and the overtaking vessel will be slowed downC.Both towheads will tend to drift apart，and the overtaken vessel will be slowed downD.Both towheads will tend to drift together，and the overtaken vessel will be slowed down
Which statement concerning current is TRUE ________．A.Current can be determined by measuring the direction and distance between simultaneous EP and DR positionsB.The drift of the current should be averaged out on a one hour basisC.After the current is determined，it should not be used for further plotting because it is an unknown variableD.The distance between a simultaneous DR position and fix is equal to the drift of the current
During the period of March and April each year salmon fishery is carried on ______ drift nets within 10 miles of the coast of Gotland.A.withB.byC.underD.Use
（）refers to the height from the waterline to the bottom of the ship.A、DraftB、FreeboardC、DerrickD、Drift
单选题The purpose of the tripping line on a sea anchor is to（）.AAid in casting offBDirect the drift of the vesselCAid in its recoveryDMaintain maximum resistance to broaching
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（）.Asteamer will drift stern downwindBtug will drift faster than the steamerCtug should approach stern toDtug should approach from downwind
单选题When one upbound vessel is overtaking another vessel and both are pushing a tow ahead，what reaction may you expect（）.ABoth towheads will tend to drift apart，and the overtaking vessel will be slowed downBBoth towheads will tend to drift together，and the overtaking vessel will be slowed downCBoth towheads will tend to drift apart，and the overtaken vessel will be slowed downDBoth towheads will tend to drift together，and the overtaken vessel will be slowed down
单选题You intend to overtake a vessel in a narrow channel.As you approach the other vessel’s stern（）Ayou will gain speedBboth vessels will gain speedCthe vessels will drift togetherDthe vessels will drift apart
单选题The winds with the greatest effect on the set，drift，and depth of the equatorial currents are the（）.AdoldrumsBhorse latitudesCtrade windsDprevailing westerlies
单选题A drift lead indicates that the vessel is dragging anchor when the line is（）.Ataut and leading forwardBslackCleading out perpendicular to the centerlineDleading under the hull
单选题Which statement concerning current is TRUE（）.ACurrent can be determined by measuring the direction and distance between simultaneous EP and DR positionsBThe drift of the current should be averaged out on a one hour basisCAfter the current is determined，it should not be used for further plotting because it is an unknown variableDThe distance between a simultaneous DR position and fix is equal to the drift of the current