I also suspect Ukraine is coordinating with western partners and carefully selecting which ships to strike.
I believe this is beyond suspicion and basically factual. To go further, it is the US intel that is providing not only the targeting data, but also plans the routes of attack and basically everything else.
As I wrote in one of my recent post, citing the article I am going to quote below, it is rather clear at this point that Ukraine on its own simply cannot inflict any significant damage to Russia. While they may have the tools, they lack capabilities, including intel, planning, etc. (the same is probably true for the Euros) Every year we get an excellent piece of journalism proving just that. This article from the NYT is, in my opinion, the undoubtedly best piece of journalism on the war in Ukraine in the past long while.
In the Trump administration’s first months, these strikes had been scattershot with negligible impact. Ukrainian military and intelligence agencies were competing, working off different target lists. Russia’s air defenses and electromagnetic jammers rendered energetics facilities virtually impenetrable. At oil refineries, drones were slamming into storage tanks, igniting blasts that grabbed headlines but accomplished little else.
In June, beleaguered U.S. military officers met with their C.I.A. counterparts to help craft a more concerted Ukrainian campaign. It would focus exclusively on oil refineries and, instead of supply tanks, would target the refineries’ Achilles’ heel: A C.I.A. expert had identified a type of coupler that was so hard to replace or repair that a refinery would remain offline for weeks. (To avoid backlash, they would not supply weapons and other equipment that Mr. Vance’s allies wanted for other priorities.)
As the campaign began to show results, Mr. Ratcliffe discussed it with Mr. Trump. The president seemed to listen to him; they had a frequent Sunday tee time. According to U.S. officials, Mr. Trump praised America’s surreptitious role in these blows to Russia’s energy industry. They gave him deniability and leverage, he told Mr. Ratcliffe, as the Russian president continued to “jerk him off.”
The energy strikes would come to cost the Russian economy as much as $75 million a day, according to one U.S. intelligence estimate. The C.I.A. would also be authorized to assist with Ukrainian drone strikes on “shadow fleet” vessels in the Black Sea and the Mediterranean. Gas lines would start forming across Russia.
Via the archive:
https://archive.ph/XmE5f
As to winning fast enough or altering the wars trajectory, after 4 years Ukraine still keeps hanging around so they have hope at least.
In my humble opinion, everyone understands that Ukraine is going to lose (or, rather, had already lost) this war. It is now all about inflicting as much damage on Russia as possible while trying to commit it to best (Ukrainian) capitulation terms possible. Many examples, but here are two from the article cited above since it convenient:
Now the battlefield balance had shifted, and Ukraine, Mr. Kellogg wrote, no longer had a path to victory. Still, he argued, America needed to arm the Ukrainians sufficiently to convince Mr. Putin that his territorial ambitions had hit a wall.
And
General Cavoli would be retiring on July 1, and he sent Mr. Hegseth what American officers called the “beginning of the end” memo. The Ukrainians were slowly losing, he wrote, and if the Pentagon did not provide more munitions, they would lose faster.
That is from Ukraine’s biggest supporters. Like I said, it is all about prolonging the conflict as long as Ukrainians are willing to accept the losses. And, frankly, I am not sure what they (Ukrainians) are thinking.