Forgot to add, saw a guy on a YouTube video fill up a fast boat in Florida with a 450 gallon tank the was empty when he started. This was at a marina and it was around $2400.
It's all a matter of perspective.
Many container ships that call on the U.S. now are considered post-Panamax or New Panamax, named so because they are larger and can go through the newer, larger locks on the Panama Canal. Ships in that size range can carry between 2.5 million and 3.5 million gallons of fuel.
The amount of fuel actually be used on a sailing depends primarily on the ship’s speed. Most ship engines have been designed for top speeds ranging between 20 and 25 knots per hour. A Panamax container ship can consume 63,000 gallons of marine fuel per day at that speed. Bunker prices now are about $3 per gallon. Wouldn't take long to max my credit card on a fill up
A little over a year ago I sold my 20' bassboat with a 200hp motor and got a 14' tinny with 30 hp. I used about 7 gallons last year. I let my wife know I can buy 2 gallons of fuel for what she pays for one pack of her cigarettes . She has not complained since about my fishing.