The delicate and painstaking task of removing cargo containers from the stricken ship 'Rena' - grounded off the coast of New Zealand - enters its second day.<br/> Workers must cut each of them free from the stack, then attach cables so the containers can be lifted by a crane onto a nearby barge.<br/> Eighteen have so far been removed from the vessel but work is expected to slow once the salvors reach the full ones.<br/> (SOUNDBITE) (English) SALVAGE MANAGER, MARITIME NEW ZEALAND, KENNY CRAWFORD, SAYING:<br/> "These are empty containers. There's no real weight in them. The weather conditions are just about perfect for this operation."<br/> And if wind speeds exceed 24 knots, the work must stop for safety reasons.<br/> (SOUNDBITE) (English) SALVAGE MANAGER, MARITIME NEW ZEALAND, KENNY CRAWFORD, SAYING:<br/> "Ultimately, the salvors' safety is paramount here as well. So they don't want to be underneath a container that's going to fall apart on them."<br/> Of the 1,200 containers, about 800 are situated below deck.<br/> Workers have said they may have to cut the ship open to reach them.<br/> Travis Brecher, Reuters