The threat to maritime vessels is likely to increase as various extremist groups anticipate U.S

Original warning text

1. THE THREAT TO MARITIME VESSELS IS LIKELY TO INCREASE AS VARIOUS
   EXTREMIST GROUPS ANTICIPATE U.S. RETALIATION FOR THE 11 SEPTEMBER
   ATTACKS. THIS INCLUDES THE ENTIRE SPECTRUM OF THREATS - FROM CIVIL
   UNREST/DEMONSTRATIONS THAT MAY NOT BE ABLE TO BE CONTAINED BY PORT
   SECURITY, ESPECIALLY IN PORTS OF COUNTRIES WITH SIZEABLE RADICAL
   ISLAMIC COMMUNITIES, TO ATTACKS SIMILAR TO WHAT THE MARITIME
   COMMUNITY SAW WITH THE USS COLE LAST YEAR. WHILE WE HAVE NO
   SPECIFIC THREAT INFORMATION AGAINST U.S. COMMERCIAL SHIPPING,
   SHIPS ARE URGED TO REVIEW THEIR SECURITY PROCEDURES AND DISCUSS
   WITH LOCAL PORT AUTHORITIES WHAT SECURITY MEASURES ARE IN PLACE TO
   PROTECT SHIPS AT ANCHOR OR PIERSIDE FROM SURFACE THREATS, THREATS
   FROM LAND OR UNDERWATER THREATS.
2. CRUISE SHIPS AND U.S. MERCHANT VESSELS SHOULD BE ON A HEIGHTENED
   STATE OF ALERT, AND SHOULD CLOSELY MONITOR THE NATIONAL IMAGERY
   AND MAPPING AGENCY'S (NIMA) BROADCAST WARNINGS.
3. COMMENCING IMMEDIATELY ALL U.S. FLAG SHIPS REQUIRED BY REGULATION
   TO FILE AMVER POSITION REPORTS AND OPERATING IN THE NORTH ARABIAN
   SEA, GULF OF OMAN, PERSIAN GULF, GULF OF ADEN, RED SEA AND THE
   SUEZ CANAL SHALL FILE AMVER REPORTS EVERY 24 HOURS VICE EVERY 48
   HOURS.
4. THIS INCREASE IN POSITION REPORTING IS A PRECAUTIONARY MEASURE DUE
   TO THE CURRENT SITUATION. THE CHANGE IS DIRECTED BY THE MARITIME
   ADMINISTRATOR IN ACCORDANCE WITH 46 CFR PART 307.11. THIS IS NOT
   TO BE CONSTRUED AS A WAR ZONE DECLARATION.
5. ALL U.S.-FLAG OPERATORS WITH SHIPS IN THE AFFECTED AREAS ARE
   REQUESTED TO FORWARD THIS ADVISORY TO THEIR SHIPS BY THE MOST
   EXPEDIENT MEANS. THIS ADVISORY WILL SUBSEQUENTLY BE PUBLISHED IN
   THE "WEEKLY NOTICE TO MARINERS" AND MARAD WORLDWIDE WEB SITE.
6. FOR FURTHER INFORMATION REGARDING THIS ADVISORY CONTACT THE
   MARITIME ADMINISTRATION, OFFICE OF SHIP OPERATIONS, CODE MAR-613,
   ROOM 2123, 400 7TH STREET SW, WASHINGTON, DC 20590,
   PHONE: 202 366 5735, FAX: 202 366 3954.
7. CANCEL THIS MSG 24 NOV.