| 摘要 |
An anchor for use with gear in a tideway is formed from two mating parts 1 and 2, one part 2 permanently fixed to the seabed and the other part 1 removable when required. The two parts are positively locked together during periods of tidal flow and unlocked during the tidal change period. This allows the parts to be separated at the tidal null points to allow the recovery of devices attached to the other part. The two parts may also be sealed together when locked together. A locking means may be actuated by movement of a component 7 in the tidal stream, by means of a timer, or in response to a remote signal. |
