The Fubuki-class destroyers (Fubukigata kuchikukan) were a class of twenty-four destroyers of the Imperial Japanese Navy. The Fubuki class has been described as the world's first modern destroyer. The Fubuki class set a new standard not only for Japanese vessels, but for destroyers around the world. They remained formidable opponents to the end of World War II, despite being much older than many of their adversaries. The initial design for the Fubuki-class was based on a 2000-ton displacement hull with a single 12.7 cm (5.0 in) battery, two twin 24-inch torpedo tubes (as introduced in Mutsuki), and capable of 40 knots (74 km/h). Following the effective abandonment of the Washington Naval Treaty from 1923, the design was modified to 1680 standard tons with more guns and more torpedo tubes. However, their increased displacement more than offset their more powerful engines, resulting in a slower top speed than originally planned.