 Yi rejected that strategy as well.Yi argued that Konishi, who commanded one of the largest "wajō", would be allowed to escape if the allies were to leave and fight elsewhere.On 15 December, about 20,000 Japanese troops from the "wajō" of Sach'on, Goseong and Namhae boarded 500 ships and began to mass east of the Noryang Strait in an attempt to break the allied blockade of Sunch'on.