A red pillar light-buoy, Fl(2) 5s, is to be substituted for the green conical light-buoy close S.W. of the stranded wreck. The above sentence mainly refers to_________________

All vessels should be cautious__________ to anchor ,trawl ,lay cables,________ to conductany other similar type of operation because of residual danger from mines at the bottom.

NORTHEAST TAIWAN RYUKYU PARTLY CLOUDY SKIES WITH ISOLATEDSHOWERS WIND NORTHEASTLY ZERO FIVE TO ONE FIVE KNOTS SEA MAINLYSLIGHT. The weather in this area is ____________.

When hitting a solid object such as a ship or an airplane, the radar waves are reflectedback _________________ they cam

In dense fog a vessel without operational radar may not be justified ______ at all butshould anchor if it is safe and practicable for her to do so.

It?s all right to rig the pilot ladder on lee side____________

Your vessel is port side to a pier with a spring line led aft from the bow. In calm weather ，putting the engines ahead with the rudder hard left should bring _______.

The pilotage-quarantine anchorage, _________________ between Damen Dao andQingshan Da0, is defined by the lines________________the given points.

There is something wrong with our radar. All kinds of objects can't be clearly____________ within the definite rang

MOVING OF AN ANCHOR OVER THE SEA BOTTOM TO CONTROL THE MOVEMENTOF THE VESSEL defines__________________.

The distance between the surface of the water and the tidal datum is the ______.