MOS) phosphate fertilizer from Tampa, Fla., to India, according to reports. Pirates attacked the ship 200 nautical miles east of the Seychelles island chain in the Indian Ocean. It was a busy day for Somalia's pirate gangs. First, they surrendered a container ship from Singapore, the Kota Wajar, but not before obtaining a reported $4 million in ransom. Then, another vessel, a chemical tanker called the St. James Park and flying a U.K. flag was seized on Monday. Between 10 and 12 ships are now being held for ransom by Somali pirates in the Gulf of Aden and surrounding waters. Recently, the gangs have grown more daring in their attacks, targeting ships as far as a thousand miles offshore. Navios, based in Greece, isn't the first publicly traded dry-bulk shipper to have a vessel successfully hijacked. In February, pirates seized DryShips' ( DRYS) Saldanha, a panamax-size coal carrier, which the company has since retrieved, presumably by paying a ransom. DryShips has refused to comment on the incident since. Navios couldn't immediately be reached for comment. --Written by Scott Eden in New York Follow TheStreet.com on Twitter and become a fan on Facebook.