Park Hyun-yeol said he and his three Korean colleagues livedlike animals in cages and did not have access to clean water.
The Glory Ship Management crew were seized on the 30,000–dwttanker Gemini (built 1986) in April 2011.
The ship and its non-Korean seafarers were released in November last year, but the Koreanquartet were retained by the pirates.
Park told the Yonhap news agency: "We drank rainwater after filtering out red worms, tadpoles and caterpillars with ourundershirts."
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