Disclosed is a self-sailing integrated vessel for carrying and mounting submerged tubes of an underwater tunnel, the vessel comprising: a first hull (1) and a second hull (2) which are parallel to each other, wherein connecting structures (3, 5) are provided between the first hull (1) and the second hull (2); traction and suspension devices are provided on the first hull (1), the second hull (2) and the connecting structures (3, 5); a loading space is located between the first hull (1) and the second hull (2) and below the connecting structures (3, 5); a member (8) to be mounted is provided in the loading space and is connected to the hulls; and a sailing power device (7) and a positioning device (9) are provided on the first hull (1) and the second hull (2). The integrated vessel has self-sailing power for a long distance, and can independently transport submerged tubes of various sizes of the underwater tunnel without being towed by other vessels, and there is no need to close shipping lanes for other vessels during transportation, thus not affecting the passage of the other vessels. The dual-hull-structure vessel type has relatively high stability, and anti-sinking and anti-capsizing properties.
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