FACTBOX - Ships held by Somali pirates

(Reuters) - Somali pirates have released the Greek MV Centauri, captured more than two months ago, a Kenyan maritime official said on Friday.

The Centauri had a crew of 26 Filipinos and was due to discharge 17,000 tonnes of bulk salt in Mombasa in Kenya when it was hijacked in mid-September off Somalia.

Below are some of the ships believed still to be held:

CAPT. STEPHANOS: Seized September 21. The freighter was flying the Bahamas flag. It was carrying a cargo of coal and has 17 Filipinos, one Chinese and a Ukrainian aboard.

FAINA: Seized September 24. The ship was carrying 33 T-72 tanks, grenade launchers and ammunition destined for Kenya's Mombasa port. Pirates have demanded $20 million (13 million pounds) in ransom.

AFRICAN SANDERLING: Seized October 15. The Panama-flagged, Japanese-operated, and Korea-owned bulk carrier has 21 Filipino crew aboard.

STOLT STRENGTH: Seized November 10. The chemical tanker with 23 Filipino crew aboard was hijacked by pirates in the Gulf of Aden. It was carrying 23,818 tonnes of oil products.

THE KARAGOL: Seized November 12. The Turkish ship with 14 crew was hijacked off Yemen. It was transporting more than 4,000 tonnes of chemicals to the port of Bombay.

TIANYU 8: Seized November 13/14. The Chinese fishing boat was reported seized off Kenya. The crew included 15 Chinese, one Taiwanese, one Japanese, three Filipinos and four Vietnamese.