The hours would be long and the work hard, but spending a year as a fisherman seemed like a good option to Samart Senasook.

Previous jobs as a security guard in Bangkok had been sporadic, so when a man known as Vee promised the 40-year old decent wages on a fishing boat he decided to take the chance.

Vee turned out to be a broker, a link in the chain of human trafficking that supplies the Thai fishing industry with thousands of migrant workers and turns many of them into virtual slaves.

Instead of a year on board a Thai fishing vessel, Senasook said he spent six, and was made to work 20-hour days in life-threatening conditions.

His unwanted odyssey only came to an end last month, thousands of miles from Thailand, on the eastern Indonesian island of Ambon.

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