| 摘要 |
When fitting a mast the mast is cranked out with the vertical articulated crane arm (1) using a wire winder (3) so that the lift centre coincides with the mast foot on the boat. Then the mast is cranked up with the wire winder (4). When removing a mast, the vertical articulated crane arm (1) is cranked in until it is over the bridge. Then the mast is cranked down with the wire winder (4). |
