An item referred to the magazine Le Yacht dated 17 April 1937 reporting that Japan built between 1923-1928 10-615 ton minesweepers with a horsepower of 2.000 hp, a speed of 20 knots and an armament consisting of 2-12cm guns and 1-8,6cm gun. Between 1931-1935 were 6-492 ton minesweepers built with a similar armament and speed but with a draught less then 1,85 metres.
