You gotta be jokin right? No person in their right mind would take two dogs on an extended cruise. Two days at sea you'd be slippin and slidin in dog crap, not to mention sea sickness, the additional water requirements, the different entry requirements for other countries, etc., etc., etc.
The only reason to take a live animal aboard a cruising ship is to have it for dinner 2 weeks out. If you need a good recipe, I have one, stuffed with rice.