It could be, but it’s not. Optimal speeds for cargo ships are going to be their hull speeds, which are usually between 12 and 18 knots, but these ships are typi

It could be, but it’s not. Optimal speeds for cargo ships are going to be their hull speeds, which are usually between 12 and 18 knots, but these ships are typically traveling 25+. Ships often exceed their hull speeds because short times from port to port is more profitable than saving fuel. They could save 2-4x on fuel costs, but lose far more than that in revenue.