Tax extensions are allowable to October 15th for personal returns. Must send in before April 17th to request one. No more August 15th extension.

If you are out of the country on April 17th, you are granted additional time for filing, but, better to file the extension before you leave.

VOYAGER:
MC to FLL 11/07
MC/Dover 6/06
MARINER:
BCN / Ven 10/11
Alaska 2001|2006
Panama Canal 2003
NAV
Caribbean 11/06
Bermuda|New Eng/Canada 6/04
PG 5/05
OCEANIA
Nautica |Ist/Athens 6/07
Regatta|Baltics 6/08
Riviera 2013 Crossing -Istanbul to Miami