With which sovereign state in the Lesser Antilles is the Pyotr Lebedev registered?
Pyotr Lebedev (research vessel) Pyotr Lebedev is a research vessel, built at Wärtsilä Crichton-Vulcan in Turku, Finland, originally as a merchant vessel "Chapayev" in 1957. She was subsequently acquired for the Soviet Union and refitted as a research ship. The vessel was owned and operated by the Andreev Acoustics Institute, and was used to make hydrophysical observations of the Atlantic Ocean such as during the Polygon experiment. "Pyotr Lebedev" possessed five on-board laboratories used to study hydroacoustics, hydrology, hydrobiology, hydrochemistry, and electronics. The ship was active as a research vessel from 1967 until 1977. She is current registered in Saint Vincent and the Grenadines.
Navassa Island Navassa Island ( ; French: "l'île de la Navasse" ; also "La Navasse") is a small, uninhabited island in the Caribbean Sea. The island is subject to an ongoing territorial dispute and is claimed as an unorganized unincorporated territory of the United States, which administers it through the U.S. Fish and Wildlife Service; and Haiti which claimed sovereignty over Navassa since 1801 through its constitution, as the basis of its objection over the later 1850s' U.S. claim.