A large container ship (like the one in Baltimore), which has a mass of 100,000 metric tons, moving at 5 knots has a kinetic energy of about 312 MJ.
That's about the same amount of kinetic energy a typical SUV (about 1.5 metric tons) has at Mach 1.9 (slightly more than 2300 km/h or 1437 mph).
(The ship that crashed into the bridge in Baltimore looks bigger, fully loaded it will very likely be closer to 150,000 metric tons).
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