| 摘要 |
<p>The present invention relates to a drillship to convey pipes such as a riser pipe and a drill pipe to be vertical to a moon pool without using a large derrick arrangement protruding from the top of the hull of the drillship; to easily pass under a bridge, traveling inland and to coastal areas with restriction on the height of a ship passing by without a derrick arrangement on the top; and to reduce the number of workers required for ship production, and the weight and production costs of the ship by eliminating the installation of the derrick arrangement.</p> |
