An azimuth angle for a body is measured from the（）.

An advantage of using chain lashing on heavy vehicles aboard Ro-Ro vessels is that it（）.

An inflatable liferaft is floating in its container，attached to the ship by its painter，as the ship is sinking rapidly. Which action should be taken with respect to the liferaft container? （）

An engine compartment gasoline fire requires which type of extinguisher?（）

An authorized light to assist in the identification of submarines operating on the surface is a(n)（）.

All of the following vessels are “restricted in their ability to maneuver” EXCEPT a vessel （）.

An “atoll cloud” forming over an island due to heating of the land during the daytime would be which type? （）

An icebreaker displaying a flag hoist which consists of the code letters “WO” (Whiskey Oscar) is indicating that（）.

Aids to navigation marking the intracoastal waterway can be identified by（）.

An entry of water，gas，oil，or other formation fluid into the wellbore is called a（）.