Hildebrandt Island - an island in the Gulf of Peter the Great of the Sea of Japan , one of the islands of the Rimsky-Korsakov archipelago. Located 64 km south-west of Vladivostok and 20 km south of Slavyanka . Administratively refers to the Khasan district of Primorsky Territory . It is part of the Far Eastern Marine Reserve (FGMZ).
|Highest point||91.3 m|
|The subject of the Russian Federation||Primorsky Krai|
There is no permanent population on the island; in the summer and autumn, the island is occasionally visited by tourists and vacationers (without going ashore).
The island was first discovered in 1851 by French whalers, and in 1852 described by sailors of the French brig "Caprice". The Russians were first examined and described in 1854 by the crews of the frigate "Pallas" and the schooner " East ". It was investigated in detail and plotted on the sea chart in 1863 by the expedition of Lieutenant Colonel of the Naval Naval Corps V. M. Babkin from the board of the Kalevala corvette . It was named at the same time by the last name of the crew member of the midshipman, Y. A. Giltebrandt (over time, the spelling of the name changed slightly to a more familiar one).  .
The island of Hildebrandt has a rounded shape, the largest width of about 380 m. The top of the island has the appearance of a shock, rises to 91.3 m above sea level . The surface of the island, including the peak, is overgrown with deciduous forest ; the northern and northwestern slopes of the peak are overgrown with grass and shrubs .
The shores of the island are steep, only in the north there is a small rocky beach about 150 m. Cliffs are scattered near the southern shore. Among these rocks, 0.2 kbt from the coast, there is a kekur , connected to the island by an underwater rocky ridge. The north coast of the island is bordered by a beach . A sandbank with a depth of 5.2 m at its edge extends 1.5 kbt to the northeast from the northern shore; a bank with a depth of 4.6 m lies to the east of the shallow. The depths in the middle of the passage between the islands of Hildebrandt and Durnovo are 15–25 m.  .