Stopping in ports costs time and money (port space is limited, mooring in open ocean isn‘t a good idea if you can help it), which was one of the big reasons shi

Stopping in ports costs time and money (port space is limited, mooring in open ocean isn‘t a good idea if you can help it), which was one of the big reasons ships quickly dropped coal in favor of liquid fuels. I don‘t know that putting heavy batteries on the top of the ship is a great idea. A lot of work already goes into making sure a ship is not too top heavy. Fuel costs dominate aviation and shipping. If it were physically possible to not rely on a fuel with huge price volatility it would be nice. Unfortunately battery airplanes seem right now to be limited to replacing single engine planes on small short hops like Boston to Martha‘s Vineyard.