The June rise followed a 558.9 percent surge in May. Although the year-on-year pace of growth in June slowed significantly from May, the gross tonnage in June was up 70.1 percent from the previous month's 934,840 gross tons.
In June, Japanese shipbuilders received orders for 33 export ships -- 30 bulk carriers, two general cargo vessels and one oil tanker. The 33 ships total 673,244 compensated gross tons. In May, 17 ships were ordered.
The robust growth figures in recent months compare with extremely low year-earlier levels.
The gross tonnage of Japanese export ship orders in June was still 32.3 percent lower than 2,350,360 gross tons in June 2008, a few months before the financial crisis erupted. And the number of ships was much lower than the 61 ships ordered in June 2008.
During the first quarter of fiscal 2010, which started on April 1, Japanese export ship orders totaled 3,358,841 gross tons, up 182.5 percent from the same three-month period of the previous fiscal year.
Japanese shipbuilders received orders for 70 export vessels -- 64 bulkers, four general cargo vessels and two oil tankers -- between April and June. The 70 ships total 1,431,982 compensated gross tons.
The figures for the April-June period still pale before those for the same period of 2008, when Japanese shipbuilders received orders for 127 export vessels totaling 5,307,780 gross tons.