Attention is called to the fact that in many cases pipelines are not （） and charted depths may be decreased by up to 2 meters．

A tug is to assist in docking an oceangoing vessel on a hawser. The greatest danger to the tug is （）.

For full information regarding the current circulation of the Indian Ocean,（） Sailing Direction,Current Atlas,etc.

The distance between any two meridians measured along a parallel of latitude （）.

Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean （）.

The height of eye correction is smaller than geometrical dip because of （）.

In Admiralty Sailing Directions，bands is the word used to indicate（）marking．

A pilot vessel on pilotage duty shall show identity lights （）.

The Earth’s irregular heating is caused by （）.

As these features are not all charted，special caution should be exercised （） vessels navigating in the vicinity.