Should we call seafarer abandonment modern-day slave labour?

...The maritime trade union [Nautilus International] has lodged protests with the Turkish owners of the...cargo ship Seccadi and the Panama registry over "terrible conditions" on board the vessel. The ship was detained in the UK port of Runcorn on 22 June and the nine crew on board were found to have no fresh fruit or meat and were owed almost USD43,000 in back pay...Nautilus International/International Transport Workers' Federation (ITF) ship inspector Tommy Molloy said the organisation hoped that by referring to such incidents as slave labour, the shipowners and flag states involved could be brought to justice so the crews are paid what they are owed and repatriated quicker. According to Nautilus, some of Seccadi's seafarers had to take out loans or pay money to get a job on the ship, including paying for their own flights from their homes to and from Turkey so the company could then fly them to the ship. The Turkish and Indian crew were also found to have wages below International Labour Organisation minimums, ranging between USD250 and USD700 per month for able seamen (ABs)...Voda Shipping also recently had another two abandoned ships in the United Kingdom, Tashin in Sharpness, near Bristol, and Reggae in Port of Leith, Scotland. "They are exactly the same stories and the same situations," [Molloy] said. Thankfully the crew of Seccadi have since been paid their back-wages and repatriated...Since the start of March 2014 there have been 159 cases of seafarer abandonment according to the International Labour Organisation...