30 years ago today, on April 27, 1995 (March 28, 1995 lunar calendar), our country's new generation of aerospace ocean-going survey ships were completed and launched. Our country's new generation of aerospace ocean-going survey ships - Yuanwang No. 3 was completed and launched today at Shanghai Jiangnan Shipyard. Yuanwang No. 3 integrates our country's highest level of shipbuilding, aerospace measurement and control, electronics, communications, optics and other technologies in the 1990s. The ship has a full-load displacement of more than 10,000 tons and a endurance of 18,000 nautical miles. The main technical indicators have reached the international level. Yuanwang No. 3 served as the measurement and control Chang'e-1 mission last year