Elections and congress were built upon the idea of shame. As in, no one could possibly do that and still expect to be reelected. A felon with a fraud conviction and a history of naked nepotism isn’t going to ask people to donate money with a straight face.
Which ocean? Do you care where you start and/or end your journey? Miami to Barcelona is going to be very different than Long Beach to Shanghai.
You can find some repositioning cruises for close to the price of a flight, but you’ll be in a shitty cabin and you would need to get to the departure port.