The Okean-O series were operational satellites for monitoring of ocean surfaces. They were follow-ons for the experimental Okean-E and Okean-OE satellites. achteOne spacecraft in orbit provides a full coverage of the entire Russian Arctic water surface with imagery data for 3-5 days .
The satellites were based on the Tselina-D bus and carried an X-band Side Looking Real Aperture Radar, passive MW radiometers and multispectral scanners measuring the emission radiation of the atmosphere/ocean system.
They carried following instruments:
The first two satellites were launched under the Kosmos designation, while later satellites were launched under the designation Okean. The eighth satellite was renamed Sich 1 and operated as a joint Ukrainian and Russian project.
|Nation:||USSR / Russia / Ukraine|
|Type / Application:||Ocean Observation|
|Equipment:||RLSBO (3.2 cm), RM-0.8, MWP (3.2 cm), RTVK, MSU-SK, Kondor|
|Power:||2 deployable solar arrays, batteries|
|Orbit:||650 km × 650 km, 82.5° (typical)|
|Kosmos 1766 (Okean-O1 #1)||1986-055A||28.07.1986||Pl LC-32/2||Tsiklon-3|
|Kosmos 1869 (Okean-O1 #2)||1987-062A||16.07.1987||Pl LC-32/2||Tsiklon-3|
|Okean 1 (Okean-O1 #3)||1988-056A||05.07.1988||Pl LC-32/1||Tsiklon-3|
|Okean (2) (Okean-O1 #4)||1989-F01||09.06.1989||Pl LC-32/2||F||Tsiklon-3|
|Okean 2 (Okean-O1 #5)||1990-018A||28.02.1990||Pl LC-32/2||Tsiklon-3|
|Okean 3 (Okean-O1 #6)||1991-039A||04.06.1991||Pl LC-32/2||Tsiklon-3|
|Okean 4 (Okean-O1 #7)||1994-066A||11.10.1994||Pl LC-32/2||Tsiklon-3|
|Sich 1 (Okean-O1 #8)||1995-046A||31.08.1995||Pl LC-32/2||Tsiklon-3||with FASat Alfa|