When a ship is in tropical zone and in seawater of density 1

When is the density of the water required to be logged in the logbook of a ship?

A.Any time the vessel moves from water of one density into waters of a different density

B.Prior to getting underway when the vessel is floating in fresh or brackish water

C.Only when the vessel moves from fresh water into salt water

D.The density of the water is not required to be logged in the unofficial logbook

You are loading in the winter in Albany，N.Y.，for a voyage to a port governed by the tropical load line mark. Which of the following statements is TRUE? (Hydrometer reading in Albany is 1.000)

A.You may not exceed the winter load line mark when you finish loading except for the burnout to sea

B.You may calculate the burnout necessary to reach the tropical zone and load extra cargo to compensate

C.The freshwater allowance and burnout to sea may be subtracted from the required freeboard in Albany

D.You may load to the winter mark less the fresh water allowance if you will be at the tropical mark upon arrival in the tropical zone

When does a pilot say “ Make all lines fast”? ________

A.The ship is about to be in position

B.The ship is very close to the berth

C.The ship is on voyage

D.The ship is in position

When are fore and aft draft readings required to be entered in the unofficial logbook of a ship?

A.Once a day

B.Once a week

C.Prior to getting underway

D.Only when entering waters of different density

When a hurricane passes over colder water or land and loses its tropical characteristics，the storm becomes a（n）______．

A.High pressure area

B.Extratropical low-pressure system

C.Tropical storm

D.Easterly wave

Logbooks are used to record the events occurring when ______.

A.the ship is in a harbor

B.the ship is at anchorage

C.the ship is underway

D.all of the above