This military support came from Washington in light of Kyiv's fears about the likelihood of a Russian attack.
The ship, carrying two island-class patrol boats, left Baltimore on November 8 for the Ukrainian port of Odesa.
Ukrainian sailors have already undergone extensive training on ships in the United States. Ukraine received two similar ships in 2019.
The U.S. embassy in Kyiv says the two new boats are part of Ukraine’s security package worth more than 2.5 billion since 2014, the year Russia annexed the Crimean peninsula and Russian-backed separatists occupied part of eastern Ukraine, the U.S. embassy in Kyiv said.
Meanwhile, American intelligence officials are warning allies that there is a short window of time to prevent Russia from taking military action in Ukraine.
Avril D. Haines, the director of national intelligence, traveled to Brussels this week to brief NATO ambassadors about American intelligence on the situation and a possible Russian military intervention in Ukraine.
Haines called on European countries to work with the United States to develop a package of economic and military measures to deter Moscow.