These cruises are generally part of a repositioning cruise, generally to or from Alaska or part of a world cruise.

Examples:

• Holland America Maasdam, 39 day starting 15JAN17
• Celebrity Solstice + 2nd cruise, 20APR17
• Emerald Princess, 12 APR17, 32 days
• Holland America Noordam, 26MAR17, 36 days

Of the above the Holland America ships are better built for crossings with the Princess being top heavy so location on that ship would be critical.