| 摘要 |
Such apparatus may consist of relatively simple elements as it comprises two clamping members (8, 9) which are connected to each of two trawl wires (2'). The one clamping member (8) is secured to prevent displacement in the longitudinal direction of the wires and a rigid connection member (10) is located between and pivotally attached to the clamping members (8, 9). The rigid connection member is connected to an electro-mechanical recording member which is constructed to record the angle setting of the connection member (10) in relation to the secured clamping member (8) and to emit an electric signal to be transmitted to a control unit for processing and display of the signal received to assess the trawl setting in the wheelhouse of the vessel so as to permit the shipmaster to read off the trawl setting continuously. |
