| 摘要 |
A self-propelled vessel 31 for servicing mollusc cultivations or fish cages has an access bridge 43 (17)(fig.2) supported between two floatation pontoons each provided with an outboard motor 44,45, the vessel also having a variable height chair 46 movably supported on rails 52. In use, the access bridge may straddle a mussel cultivation (comprising cultivation ropes 38 suspended from head ropes 32 supported by barrels 33 and connected to a buoy 35 via a bridle 34) or overhang a fish cage (11)(fig.3). The mussel cultivation may provide a wave barrier and the floatation barrels 33 may be attached to the head ropes by means of a barrel seat arrangement (58)(fig.4). In an alternative form (fig. 2) the vessel has angled bows provided with solid rubber or air-filled fenders (20). The bridge may comprise a steel grillage and removable guard rails. |
