A towing vessel 30 meters in length is pushing barges ahead.

A tug is best positioned for towing and maneuvering on rivers and other restricted waters where wave action is limited when ______.

A.directly astern and pushing the tow

B.towing on a hawser

C.towing alongside and parallel to the vessel it is towing

D.towing on the hip

There is a ______ when one or more vessels are towing or pushing another vessel or vessels，provided that they are all involved in commercial activities and not in a salvage operation．

A.private safety

B.private maritime adventure

C.common safety

D.common maritime adventure

A. 33 Feet (10 meters)

B. 100 Feet (30 meters)

C. 328 Feet (100 meters)

D. 1200 Feet (366 meters)

You are in charge of a towing vessel that operates exclusively on inland waters. You regularly tow barges that provide services (cargo lighters，fuel barges，etc.) to foreign flag vessels in port. What will be accepted as proper credentials for you and your crew?

A.No credentials are required since you operate on inland waters only

B.Social Security card

C.State driver's license with photo ID

D.Merchant Mariner's Document

A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of ______．

A.A vessel towing by pushing ahead

B.A power-driven vessel，not towing

C.A barge being pushed ahead

D.Either answer A or answer B

As operator of a 199 GT towing vessel sailing foreign，it shall be your duty to enter in the Official Logbook or other permanent record ______.

A.all information contained on the barge's Certificate of Inspection

B.the condition of all towing gear to be used

C.all navigational aids to be used

D.the barges load line and draft readings