Kerch Strait incident

Kerch Strait incident
Part of the Ukrainian crisis and the Russian military intervention in Ukraine
Yani Kapu tugboat attacked by Don patrol boat.png
Yany Kapu tugboat attacked by Don patrol boat as seen by Ukrainian Gyurza-M artillery boat
Date25 November 2018
  • Russian Border Guard captures three Ukrainian naval vessels.
  • Ukraine declared regional martial law for 30 days starting on 28 November 2018[1][2]
  • Ukraine bans entry to all male Russian nationals aged 16-60 for the period of the martial law with exceptions for humanitarian purposes.[3]
  • Ukraine claims that Russia blocked vessels from sailing to Ukrainian ports (denied by Russia).[4]
 Russia Ukraine
10 ships:
Sobol patrol boats
PS Izumrud
PS Don
2 Ka-52
2 Su-25
24 crew
2 Gyurza-M artillery boats Berdyansk and Nikopol
1 tugboat Yany Kapu
Casualties and losses
2 ships slightly damaged24 crew captured[5] (3 of them injured), 3 ships captured (2 gunboats, 1 tugboat; two of the ships damaged, lost engines)[6][7][8][9]
Kerch Strait is located in Black Sea
Kerch Strait
Kerch Strait
Location within Black Sea

An international incident occurred on 25 November 2018 when the Russian Federal Security Service (FSB) border service coast guard fired upon and captured three Ukrainian Navy vessels attempting to pass from the Black Sea into the Sea of Azov through the Kerch Strait on their way to the port of Mariupol.[6][10] In 2014, Russia had annexed the nearby Crimean Peninsula, which is internationally recognised as Ukrainian territory. It later constructed the Crimean Bridge across the strait. Under a 2003 treaty, the strait and the Azov Sea are intended to be the shared territorial waters of both countries, and freely accessible.[6][11][12]

As the flotilla, which consisted of two gunboats and a tugboat, approached the Kerch Strait, the Russian coast guard said they repeatedly asked the Ukrainian vessels to leave what they referred to as "Russian territorial waters". They said that the vessels had not followed the formal procedure for passage through the strait, that the Ukrainian ships had been manoeuvring dangerously, and that they were not responding to radio communications.[6][13][14] Ukraine said that it had given advance notice to the Russians that the vessels would be moving through the strait, that the ships had made radio contact with the Russians, but received no response, and cited the 2003 treaty against the assertion that the ships had entered Russian territorial waters.[15][16][17] When the Ukrainian Navy ships refused to halt their journey, and continued toward the bridge, the Russian coast guard fired on them. Following a chase, the Russians seized the Ukrainian vessels off the coast of Crimea while they were attempting to return to Odessa.[6][18] Six Ukrainian crew members were injured in the clash, and twenty-four Ukrainian sailors from the captured ships were detained by Russia.[6][5][19]

The Ukrainian government characterised the incident as a potential precursor to a Russian invasion, and declared martial law along the border with Russia and in Black Sea coastal areas.[20][21] The incident took place a few days before the 2018 G20 Buenos Aires summit. Western leaders referred to it when they spoke of sanctions against Russia.


Russia annexed Crimea in 2014.[22] The annexation is not officially recognised by the United Nations.[23][24]

The Kerch Strait connects the Sea of Azov with the Black Sea, and is formed by the coasts of the Russian Taman Peninsula and disputed Crimea. It is the sole access point for ships travelling to and from Ukraine's eastern port cities, most notably Mariupol. While both Ukraine and Russia agreed to the principle of freedom of movement through the strait and the Sea of Azov in 2003 following the Tuzla Island incident,[25] Russia has controlled both sides of the strait since the Crimean annexation.[9] By May 2018, Russia had completed the construction of the Crimean Bridge, which is 19 kilometres (12 mi) long and spans the strait, providing a direct land connection between Crimea and Moscow.[26] The bridge's construction was criticised by Ukraine and many other countries, which called it illegal.[27] Furthermore, the Ukrainian and American governments have said that the bridge is being used by Russia as part of a creeping hybrid blockade of Ukrainian ports in the Azov Sea, and that Russian inspections of ships have risen sharply since the bridge opened in May 2018, with some being forced to wait between three and seven days before being allowed through.[28][29][30][31] Under the 2003 treaty, both Russia and Ukraine have the right to inspect vessels sailing into or out of the Sea of Azov.[32] Ukraine has said that the increase in inspections by the Russian coast guard following the opening of the bridge represents an abuse of that right.[12]

In late September, the Ukrainian Navy launched an operation to move the Donbas search and rescue ship and the Korets tugboat from Odessa to Mariupol.[33] The operation was the first deployment of Ukrainian Navy ships to the Kerch Strait area since the Russian annexation of Crimea.[34] Commanded by Dmytro Kovalenko, the ships radioed their intention to enter the Azov Sea via the Kerch Strait as they approached it on 23 September, but did not follow the official procedure to request permission. According to Kovalenko, this was an intentional form of "naval diplomacy", carried out with the aim of asserting the Ukrainian claim to the surrounding waters. While the ships received pilot services from the Kerch port authority free of charge, they were also tailed by at least 13 Russian vessels, and flown over by Russian aircraft.[33] Ultimately, Russia did not hinder the ships' passage under the Crimean Bridge, and they successfully reached Mariupol. In an interview with the Kyiv Post, Ukrainian naval expert Taras Chmut said that he thought that Russians had not expected the Ukrainian operation, and so decided to take the least risky option by allowing them through. He also said "For the first time, we didn’t just react to the Russians’ steps, but started to set our own game rules".[34]

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