The most probable position of the object of a search at any given time is the（）.

The purpose of storm oil in a sea anchor is to（）.

An uncontrolled flow of gas，oil，or other well fluids into the atmosphere is called a（）.

（）the visibility to reduce to one mile by heavy rain，it（）be impossible to rescue the vessel in distress.

A man was sighted as he fell overboard. After completing a Williamson turn，the man is not sighted. What type of search should be conducted?（）

The survival craft’s engine is fueled with（）.

The ship’s bearing is 145°（）the Lighthouse.

The key to rescuing a man overboard is（）.

The process of waiting a period of time before pretensioning an anchor is known as（）.

The ship touched the bottom（）the port side at 2000 hours.