Russian battleship Petropavlovsk (1894)

After the Japanese victory in the First Sino-Japanese War of 1894–1895, both Russia and Japan had ambitions to control Manchuria and Korea, resulting in tensions between the two nations. Japan had begun negotiations to reduce the tensions in 1901, but the Russian government was slow and uncertain in its replies because it had not yet decided exactly how to resolve the problems. Japan interpreted this as deliberate prevarication designed to buy time to complete the Russian armament programs. The situation was worsened by Russia's failure to withdraw its troops from Manchuria in October 1903 as promised. The final straws were the news of Russian timber concessions in northern Korea and the Russian refusal to acknowledge Japanese interests in Manchuria while continuing to place conditions on Japanese activities in Korea. These actions caused the Japanese government to decide in December 1903 that war was inevitable.[9] As tensions with Japan increased, the Pacific Squadron began mooring in the outer harbor at night in order to react more quickly to any Japanese attempt to land troops in Korea.[10]

On the night of 8/9 February 1904, the Imperial Japanese Navy launched a surprise attack on the Russian fleet at Port Arthur. Petropavlovsk was not hit and sortied the following morning when the Japanese Combined Fleet, commanded by Vice Admiral Tōgō Heihachirō, attacked. Tōgō had expected the night attack by his ships to be much more successful than it was, and anticipated that the Russians would be badly disorganized and weakened, but they had recovered from their surprise and were ready for his attack. The Japanese ships were spotted by the protected cruiser Boyarin, which was patrolling offshore and alerted the Russian defenses. Tōgō chose to attack the Russian coastal defenses with his main armament and engage the ships with his secondary guns. Splitting his fire proved to be a poor decision as the Japanese 8- and 6-inch guns inflicted little damage on the Russian ships, which concentrated all their fire on the Japanese ships with some effect. Petropavlovsk was lightly damaged in the engagement by one 6-inch and two 12-inch shells, killing two and wounding five.[11] In return she fired twenty 12-inch and sixty-eight 6-inch shells at the Japanese battleships, but none hit.[12][13] Displeased by the poor performance of the First Pacific Squadron, the Naval Ministry replaced Stark with the dynamic and aggressive Vice Admiral Stepan Makarov,[14] regarded as the navy's most competent admiral,[15] on 7 March.[14] As a result of the damage incurred in the attack by the more heavily armored Tsesarevich and the subsequent lengthy repair time, Makarov was compelled to retain Petropavlovsk as his flagship, against his better judgement.[12][13]

A Japanese depiction of the sinking of Petropavlovsk. The original caption reads: "Picture of the Eighth Attack on Port Arthur. The Flagship of Russia Was Destroyed by the Torpedo of Our Navy and Admiral Makaroff Drowned."

Having failed to blockade or bottle up the Russian squadron at Port Arthur by sinking blockships in the harbor's channel,[16] Tōgō formulated a new plan. Ships were to mine the entrance to the harbor and then lure the Russians into the minefield in the hopes of sinking a number of Russian warships. Covered by four detachments of torpedo boat destroyers, the minelayer Koru-Maru began to lay a minefield near the entrance to Port Arthur on the night of 31 March. The Japanese were observed by Makarov, who believed that they were Russian destroyers which he had ordered to patrol that area.[17]

Early on the morning of 13 April, the Russian destroyer Strashnii fell in with four Japanese destroyers in the darkness while on patrol. Once her captain realized his mistake, the Russian ship attempted to escape but failed after a Japanese shell struck one of her torpedoes and caused it to detonate. By this time the armored cruiser Bayan had sortied to provide support, but it was only able to rescue five survivors before a Japanese squadron of protected cruisers attacked. Escorted by three protected cruisers, Makarov led Petropavlovsk and her sister Poltava out to support Bayan, while ordering the rest of the First Pacific Squadron to follow as soon as they could. In the meantime, the Japanese had reported the Russian sortie to Tōgō, who arrived with all six Japanese battleships. Heavily outnumbered, Makarov ordered his ships to retreat and to join the rest of the squadron that was just exiting the harbor.[18] After the squadron had united and turned back towards the enemy, about two nautical miles (3.7 km; 2.3 mi) from the shore, Petropavlovsk struck one or more mines at 09:42 and sank almost instantly,[19] taking with her 27 officers and 652 enlisted men, including Makarov and the war artist Vasily Vereshchagin.[20][21] Seven officers and 73 men were rescued.[8]

Makarov's arrival had boosted the morale of the squadron, and his death dispirited the sailors and their officers. His replacement, Rear Admiral Wilgelm Vitgeft, was a career staff officer unsuited to lead a navy at war. He did not consider himself a great leader, and his lack of charisma and passivity did nothing to restore the squadron's morale.[22][23][24] A monument was constructed in Saint Petersburg in 1913 to honor Makarov after Japanese divers identified his remains inside the wreck of Petropavlovsk and gave him a burial at sea.[21]