Hotmail
United States Coast Guard Cutter Polar Star |
||||||
 |
||||||
 |
||||||
| The United States Coast Guard cutter Polar Star clears a navigable path through the ice in Antarctica. The Polar Star and other Polar-class icebreakers are capable of breaking ice more than 6 m (20 ft) deep. Their primary mission is to assist scientific research missions and to escort United States government shipping interests in ice-bound waters. | ||||||
|
||||||
| Bruno P. Zehnder/Peter Arnold, Inc. | ||||||
|
||||||
|
||||||
| Appears in these articles: | ||||||
|
||||||
| United States Coast Guard; Icebreaker | ||||||
|
||||||
|
||||||
|
Advertisement
|
|||||||||||||||||||
| |
|||||||||||||||||||
© 2009 Microsoft
  |