Revision 01 north american ice service (nais) iceberg bulletin 171432Z apr

Original warning text

1. REVISION 01 NORTH AMERICAN ICE SERVICE (NAIS)
   ICEBERG BULLETIN 171432Z APR.
2. ICEBERG LIMIT ALONG TRACKLINE JOINING
   47-36N 052-41W, 48-00N 051-35W,
   52-50N 050-25W, 55-00N 051-00W.
3. ESTIMATED ICEBERG LIMIT ALONG
   TRACKLINE JOINING
   55-00N 051-00W, 60-00N 058-00W,
   60-50N 053-15W, 58-15N 044-10W,
   59-00N 039-15W, 60-30N 040-00W,
   63-20N 037-50W, 64-50N 027-40W.
4. WESTERN ICEBERG LIMIT ALONG TRACKLINE
   JOINING
   51-09N 058-38W, 50-18N 057-32W.
5. SEA ICE LIMIT ALONG TRACKLINES
   JOINING:
   A. 50-16N 059-54W, 50-42N 058-38W,
      50-42N 057-25W.
   B. 49-58N 055-30W, 50-42N 054-08W,
      53-59N 052-40W, 55-22N 053-47W,
      56-12N 056-33W, 58-03N 057-48W,
      61-47N 058-33W, 61-51N 058-19W,
      62-00N 057-49W, 62-08N 057-24W.
   C. 62-25N 040-09W, 59-54N 041-16W,
      59-22N 045-39W, 59-35N 045-18W,
      59-56N 044-25W.
6. MOST RECENT RECONNAISSANCE:
   WESTERN LIMIT GENERAL FLIGHT 16 APR 21.
7. REPORT POSITION AND TIME OF ANY ICEBERGS
   SEA ICE OR STATIONARY RADAR TARGETS THAT
   MAY LIKELY BE ICE TO THE NEAREST CANADIAN
   COAST GUARD MARINE COMMUNICATIONS AND
   TRAFFIC SERVICE STATION OR
   USING INMARSAT CODE 42.
8. FOR MORE REPORTING INFORMATION OR TO
   DOWNLOAD SHAPEFILES AND WEEKLY PREDICTIONS,
   GO TO WWW.NAVCEN.USCG.GOV/IIP.
9. CANCEL NAVAREA IV 310/21.
10. CANCEL THIS MSG 180001Z APR 21.