of using a second harpoon to electrocute whales is now forbidden by the IWC. Environmental groups have reported whales being dragged backward and drowned. Each caught whale is secured to the side of a whale catcher with rope. Lines are later used to transfer the whales from the whale catcher to the factory ship. Whales are next winched onto the factory ship through a slipway at the stern of the vessel. On the flensing deck several workers use specialized tools to butcher the whale. Usable product is delivered to the lower decks of the ship for further processing and refrigerated storage. Non usable product is dumped back into the ocean. Additional regulations from the United Nations International Maritime Organization took effect on August 1, 2011, prohibiting ships using heavy oil from navigation in the Antarctic Treaty System area to prevent pollution. The IMO Guidelines For Ships Operating In Ice-Covered Waters also establishes requirements for a double-hull strengthened against ice-related damage. The Japanese factory ship Nisshin Maru does not currently meet these IMO standards. Small-type coastal whaling Coastal fishing fleets that hunt dolphins use many small boats in a coordinated effort. The fishermen bang metal poles in the water in order to frighten and therefore guide noise-sensitive dolphins toward the shore. A series of nets are then used to corral the dolphins in. Divers and fishermen in boats next lance or cut the throats of the dolphins and haul them away to a nearby shore station for processing. A few dolphins are selected for sale to aquariums and spared for the marine aquarium (dolphinarium) entertainment industry. The practice of dolphin drive hunting in Taiji, Japan was the subject of a 2009 documentary film entitled The Cove. Japanese whalers have hunted Baird's beaked whales on the Bōsō Peninsula, Wada, since the 17th century. Once landed just off the coast of Japan, the beaked whales are pulled onto a landing station with ropes and then butchered for sale. The meat is sold as food and the rest is sold to be used as organic fertilizer. In May 2007 the IWC rejected a proposal to expand coastal catches. The quota was limited to a total of 66 whales between four whaling towns. The whalers of Wada encourage local children to attend the first butchering of each season followed by a community event where whale meat is served. According to the Japan Fisheries Agency up