When pushing ahead，wires leading from the quarters of the after outboard barges to the bow of a towboat（）.
1、Adjust （） by means of lead wire.
Adjust （） by means of lead wire.Athe clearance of the main bearingBthe diameter of main bearingCthe gap of main beatingDthe tolerance of main bearing
2、When a vessel sees the other ahead or
When a vessel sees the other ahead or nearly ahead，by night she could see the masthead lights of the other in a line or nearly in a line...
3、In the absence of a route leading from
In the absence of a route leading from seaward，the conventional direction of buoyage generally follows（）.Aan anti-clockwise direction around lan...
4、When cutting wire rope，seizings are pu
When cutting wire rope，seizings are put on each side of the cut.The seizings prevent the wire from unlaying and also（）.AMaintain the original...
5、Measure （） by means of lead wire.
Measure （） by means of lead wire.Athe clearance of the main bearingBthe play of the miler bearingCthe gap of the main bearingDthe tolerance of the main bearing
6、When a pushing vessel and a vessel bei
When a pushing vessel and a vessel being pushed are rigidly connected in a composite unit，they shall be regarded as（）.Aa tugboatBa sailing vesselCa power-driven vesselDa vessel propelled by machinery and under sail