| 摘要 |
A semi-submersible oil platform comprising two pontoons (1), columns (2) extending up from the pontoons and supporting a deck structure (3), and stays (4) extending transversally of the pontoons between the columns (2), is provided with a plough-like protecting device (8) for diverting drifting objects, e.g. ice bodies which are not sufficiently large to be detected by radar, but which, nevertheless, could cause considerable damage to the horizontal stays (4) of the platform and the drill string. |
