Pyotr Lebedev (research vessel)
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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.[2] 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.[3] Pyotr Lebedev possessed five on-board laboratories used to study hydroacoustics, hydrology, hydrobiology, hydrochemistry, and electronics.[3] The ship was active as a research vessel from 1967 until 1977.[4] She is current registered in Saint Vincent and the Grenadines.[1]
NameChapayev[1]
BuilderWärtsilä Crichton-Vulcan, Turku, Finland[1]
Yard number1002
Laid down16 April 1956
 Pyotr Lebedev alongside sister ship Sergey Vavilov | |
| History | |
|---|---|
| Name | Chapayev[1] |
| Builder | Wärtsilä Crichton-Vulcan, Turku, Finland[1] |
| Yard number | 1002 |
| Laid down | 16 April 1956 |
| Acquired | 3 April 1957 |
 Soviet Union | |
| Name | Pyotr Lebedev |
| Namesake | Pyotr Lebedev |
| In service | 1966 |
| Out of service | 1977 |
 Saint Vincent and the Grenadines | |
| Name | Pyotr Lebedev[1] |
| Identification | IMO number: 5276159[1] |
| Status | in active service |
| General characteristics | |
| Type | Research vessel/survey vessel |
| Tonnage | |
