Following Tropical Storm Helen in quick succession, Ida wrought tremendous damage across eastern Japan and was regarded as the worst to strike the nation since Typhoon Vera in 1959. The greatest loss of life occurred along the slopes of Mt. Fuji where two villages were virtually wiped out by massive mudslides. Nearly 700 landslides struck the region and were blamed for the majority of damage and loss of life. A total of 275 people perished, 43 were listed as missing, and a further 976 sustained injury. Disastrous landslides and strong winds destroyed more than 73,000 homes and damaged 56,000 more. Damage in the country exceeded $300 million, with crop losses being particularly heavy. The high winds also caused havoc among seagoing vessels, with 107 ships sinking. The 7,702 ton cargo liner, "City of Wellington" was grounded near Yokohama. A 10,208 ton freighter, "Ever Sureness", was stranded at the mouth of the Tsurumi River. Additionally, the 24,829 ton Liberian tanker, "Golar Jeanne-Marie", ran ashore near Shimizu. On October 6, a tropical depression was identified near Kwajalein Atoll in the Marshall Islands. Tracking generally north-northeast, little development occurred over the following several days. On October 9, the system was classified as "Tropical Storm Kathy". Its motion subsequently stalled and the system executed a small clockwise loop over the following three days. Kathy quickly intensified into a typhoon late on October 9, marked by the formation of a 45 km (30 mi) wide eye. The system reached an initial peak with winds of 150 km/h (90 mph) on October 10 before weakening slightly. Turning northeast on October 13, Kathy began reintensifying and achieved its peak strength the following day with winds of 185 km/h (115 mph) and a pressure of 947 mbar (hPa; 27.67 inHg). After maintaining its peak winds for 30 hours, Kathy began to degrade. A temporary turn to the east-northeast accompanied this weakening. The system attained its secondary peak on October 18 with winds of 165 km/h (105 mph) over the open north Pacific. Approaching 40°N, cold air began to entrain into the typhoon's circulation by October 19. Transition into an extratropical cyclone south of the Aleutian Islands on October 20 as the system turned eastward.