Hoo boy. I was wondering when tonnage was going to come up. Buckle up, this is a thrill ride.
First of all, let's go to the USCG
Port State Information Exchange. If you want info on boats or ships that touch US waters, this is a great place to go. Here's the data for this ship:
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Over on the right by where I have stuff highlighted, you'll see a bunch of tonnage numbers. The top two (not highlighted) are Convention tonnage, as measured under the International Tonnage Convention. The important thing to remember any time you see Convention Tonnage, gross tonnage, or net tonnage, is that these are measures of volume and not weight. If you see a statement that a ship is a "100,000 ton ship", that is almost certainly convention tonnage. From a basic formula and the convention gross and net tonnages, you can back out the total enclosed volume of the ship (from gross tonnage) and the enclosed cargo hold volume or passenger capacity (from net tonnage). But nobody except regulators, tax authorities, naval architects, and ship owners really care about convention tonnages. At best they're a reasonable proxy for "how big is this ship?"
The next two lines are tonnages in metric tons, meaning weight (strictly speaking, mass, but ships never leave Earth gravity, so we can call it even). Displacement is the total weight of the ship when it's loaded down to its load line. Deadweight is the total displacement minus the lightship weight, which is the weight of the ship itself. In other words, deadweight is the amount of stuff (cargo, tankage, food and stores, spare parts, etc.) that the ship is carrying. The rules for calculating lightship are moderately long, involved, and can be hairsplitting.
So if it was loaded down to its load line, it would have weighed 148,000 and change metric tons. Of course, it probably wasn't since most ships are fully loaded coming to the US (bringing in the $3 plastic crap of legend) and somewhat more lightly loaded leaving. How much lighter?
We don't really know. However, lightship is around 32,000 tons, so we know it's definitely not 10,000 tons. Hazarding a guess based on where the bottom paint line is, I'd say it's likely around half loaded or around 90,000 tons.