In 1986 , 30,000 more whales were killed despite the ban. Most of them were caught in Japan and Norway however IVC allowed small number of whales to be killed for indigenous communities in Canada and Greenland. In the 20th Century whaling was at an all time high. The ships were used in production of cosmetics and chemicals. Traditional whaling is used through small boats using simple harpoon. They use it for their oil meat and bones. This makes it more sustainable.