| 摘要 |
A subsea landing base (10) including a plurality of guide posts (14) interconnected to a housing support structure (12) including an upper annular plate (30), a lower annular plate (22), an annular control plate (32) supported on said upper annular plate and rotatable thereon, means connecting said control plate to a landing ring (28) to actuate said landing ring between housing supporting position and expanded position, rotation of the control plate to one of its positions of running, released and landed and locked, and means for engaging the landing base for rotation of the control plate and retrieval of the base. |
