Let's look at this:
Special Containment Procedures: Halp pls
You get points for admitting outright that you don't know how to write Containment Procedures. I'll give some suggestions at the end.
SCP-XXX is the name given to the wreck of the cargo ship [REDACTED], located 2km inland of the █████████ coast. The ship's exact size is unknown but it is estimated to be little over 130 meters long with a width of around 28 meters. Recovered blueprints indicate that the ship has four cargo holds, providing a maximum storage volume of over 3700 meters3, and is powered by a coal fueled steam turbine.
And you use metric! I'm liking this more and more!
SCP-XXX was discovered after Team █████████
We don't exactly have "Teams" here. We have MTFs, or Mobile Task Forces. A list of them is here.
The next couple of paragraphs pretty much say that it's a self-mobile ship, heavily degraded, and only imply that it causes desertification. I suggest changing that and outright stating it dehydrates the environment around it over a period of time. Also, keep in mind that if it "drinks" up all the water in the area… what happens to the liquids in the human body? We're 80 percent water, after all…
After Incident XX-XXX-XX, forcasted heavy rain arrived at 19:20, lasting for over 4 hours. During this time, SCP-XXX was seen to move far more frequently and far more erratically. Observation teams noted that pools of water that had accumulated in the area around SCP-XXX dissipated in a matter of seconds as SCP-XXX passed by them. The research team deduced that SCP-XXX was absorbing all of the moisture from the area, causing the desertification. Returned test results of viable plant samples from the area later confirmed this, as they were found to have an average of 11% of normal water concentration for the selected species.
This seems unnecessary. If you just explain that it causes desertification (and I'm not entirely sure it works that way), then you can just eliminate this paragraph entirely. As for the part about incident XX-XXX-XX, you can just put that in the actual incident report at the bottom.
Now, for my suggestion on the Special Containment Procedures. Firstly, limit it's movement somehow. Construct a fence around it. A big ass fence. Preferably somewhere in the middle of a desert, like the Sahara, somewhere where it won't cause too much damage, if that's even possible.
Finally, if there's no way to stop it… this might possibly be Keter, not Euclid.
And that's my two cents.