I. I know also that ice-breaker of Astrakhan fishing port "Sergo Ordzhonikidze" (steamer, built by "Krasnoe Sormovo": laid down in 1936, launched in 1938, accepted 18.01.1941) was used in North Caspian for ice reconnaissance and meteorological observations as well as usual port ice-breaker. 08.08.1941 mobilized and reequipped into gun boat (since 02.10.1941 - in Caspian flotilla). 26.03.1943 - the ship was disarmed and returned back to Astrakhan fishing port. Scrapped in 1970s.
Specifications: 1220 t, 58.1x12.6x2.95 m, 1300 hp steam engine, 12.5 knots, 5600 miles, armament - 2x130mm + 4x45mm + 1x37mm + 4x12.7mm + 3x7.62mm, crew 117 men.
http://sovnavy-ww2.by.ru/gunboats/pic/sergo.jpg
http://sovnavy-ww2.by.ru/gunboats/pic/sergo_ld.jpg
Was that ship the same "Sergo Ordzhonikidze" you've mentioned - I don't know. But it served under the name "Sergo Ordzhonikidze" during WWII, not renamed as "Sikhali"; also the ship was built by "Krasnoe Sormovo" (Nizhnij Novgorod, Volga river) not by Sevastopol Marine Works (Sevastopol, Black Sea). And it was ice-breaker, not cargo ship. Probably, they were differ ships
Also
diesel cargo ship "Sergo Ordzhonikidze" was used for transporting and testing new torpedos offshore Baku which were produced in Makhachkala and Krasnovodsk during WWII, also that ship with towed barges made navigations to Iranian Pehlevi for Lend-Lease supplies.
II. Minelayer (ex-cargo ship) "Syzran".
Specifications: 2625 t, 79.9x12x5.2 m, steam engine 700 hp, 6.5 knots, armament - 2x76.2mm + 4x45mm + 1x20mm + 2x12.7mm.
Laid down in 1931, launched 07.1932, accepted 01.1936. Since 08.07.1940 in Black Sea Navy. Under emergency repair 17.05.1941 - 23.06.1941. Mobilized again 07.07.1941, since 22.07.1941 - in Black Sea Navy.
I believe this is differ type (but with quite similar dimensions) than Caspian "Kujbyshev"/"Osetin".