According to the design data, after modification again and again, the final confirmed tonnage of the spacecraft remained at 12000 tons.


    After all, the place where the spacecraft is assembled is on the moon. Although the gravity of the moon is only one sixth of that of the earth, it still has gravity. Therefore, after the construction of the spacecraft is completed, it needs to be separated from the gravity of the moon.


    With human civilization and current technology, it is already the greatest ability to send a spacecraft of more than 10000 tons from the moon into space. If the tonnage of the spacecraft continues to increase, with the current technology of human civilization, it is simply impossible to send it into space. Even if the moon has no atmospheric resistance, its gravity is only one sixth of that of the earth.


    What''s more, with the current technology of China, although it has the ability to build ships of 100000 tons or even larger, it has not built submarines of more than 10000 tons in terms of submarine construction, and the technology of this spaceship is based on submarines. Naturally, even if it is built with more than 10000 tons, there is already a great risk for China, Not to mention the bigger one.


    In addition, there is another situation, that is, in the past, what Wang Bin wanted to build was a purely military spacecraft. After all, for today''s human civilization, the most important thing is a military spacecraft. After all, the threat of alien civilization is at hand.


    However, considering that the current technology is not mature enough, and compared with military spacecraft, there is another kind of spacecraft, which is more important for human civilization, that is, scientific research spacecraft.


    Therefore, after high-level discussions between Wang Bin, Qin Lao and other officials, it was finally decided that the spacecraft in the military model could be built slowly first, but the scientific research-based space exploration and measurement ship should be built first.


    After all, in the plan for the next few years, warm civilization will build a large-scale base on Mars, but now human civilization''s understanding of Mars is very limited, or even no chance.


    Therefore, before human civilization builds a Mars base, it must carry out large-scale exploration and understanding of Mars before construction.


    If we don''t use large-scale space research exploration and measurement ships, but use ordinary small spacecraft to explore Mars, according to the situation, it will take at least 20 or 30 years for human civilization to build Mars.


    After all, the small space vehicle can carry only one or two kinds of equipment and instruments, and the function of the equipment is also very limited due to the limitation of the aircraft volume.


    The large spacecraft is different. It can not only carry a large number of equipment and large equipment, but also a large number of scientists to study Mars on the spacecraft for a long time.


    In addition, since human civilization wants to build defense facilities in the asteroid belt, it is natural to have a certain understanding of some basic data of the asteroid belt, such as magnetic field, celestial bodies and ambient temperature.


    These require large space research ships to be competent.


    It was for this reason that Wang Bin, their relevant departments of Tiangong science and technology and the relevant official departments finally confirmed the construction of the space scientific research and exploration survey ship after discussion.


    "Mr. Wang! Our research ship was named Dijiang class according to multi-party negotiation, and the first ship was naturally named Dijiang according to convention.


    Dijiang class scientific research ship, which is designed and manufactured by culture, industry and technology, is the first generation of our human civilization and can really be used for deep space navigation. The ship is 195 meters long, 11 meters wide and 9 meters high.


    According to the previous design requirements, the spacecraft can not only carry the living materials consumed by nearly 1000 people for more than two years, but also carry a large number of the top scientific research equipment of human civilization.


    Of course, at present, no equipment has been installed on the spacecraft, including large-scale scientific research equipment.


    After all, according to the design, the empty weight of the spacecraft has reached 12000 tons. Such a weight is already the maximum weight of the spacecraft taking off from the moon into space. If various equipment are added, it is impossible to take off with the maximum take-off weight of the spacecraft.


    Therefore, all scientific research equipment can only be outfitted after the spacecraft construction is completed and enters space. In this way, no matter how heavy the weight of these equipment is, it will not affect the takeoff of the spacecraft on the moon.


    In addition, because this spacecraft is specially developed for exploring the universe, it has a very strong ability of space exploration.


    But this can only be in the solar system. For technical reasons, the spacecraft does not have the ability to achieve the speed of superluminal and subluminal. Even if it sails at full speed, it can not reach one thousandth of the speed of light.


    In addition, the size of the spacecraft is still too small compared with the navigation outside the solar system, and the materials it carries are very limited. It can''t leave the solar system at all.


    Of course, as a spaceship that wants to engage in dangerous missions such as exploration in the universe for a long time, it will certainly encounter various dangers, such as asteroid belt impact, so this spaceship not only has strong armor, but also has strong attack power. It is not even worse than the firepower of the professional military escort spaceship we designed earlier.


    First of all, only the thickness of the armor of the ship body itself, even the weakest place, has reached 500 mm, and there are also mounting points for external armor outside the ship body. If necessary, thicker external armor can be installed.


    In terms of attack, the spacecraft is not only equipped with four bow large missile launch units and more than 100 small missile launch units, but also equipped with a number of guns, railguns and laser guns of various types. At the same time, it also has a large number of ammunition. With these firepower, it is enough to destroy an asteroid several times larger than the spacecraft.


    It can be said that the safety of this spaceship in the solar system is completely guaranteed by. " In the video, Professor Dai, the person in charge of the spacecraft, introduced Wang Bin.


    Although Wang Bin has long been very clear about Professor Dai''s introduction and the data of the spacecraft, Wang Xu beside Wang Bin is not clear. Therefore, after listening to Professor Dai''s introduction, he was stunned.


    You know, this is a research ship! It''s not a combat space warship to fight against alien civilization, but only a research ship has such a powerful firepower configuration, which makes him doubt his life.


    "Mr. Wang! This is a research ship? You won''t lie to me! Even the most powerful warship on earth can''t be defeated with such a force configuration!" said Wang Xu.