它与电磁计程仪比较具有测量精度高;能够测量绝对航速、航程;能够测量船舶横向移动速度等优点。
With the electromagnetic Log compared with high accuracy, to measure absolute speed, range, to measure the ship horizontal speed advantages.
当水深较深超过其跟踪水深时,计程仪只能对水层跟踪,测量相对水层的航速、航程。
When water deeper than its depth tracking, Log on only water tracking, measuring the relative speed of the water layer, the voyage.
电磁计程仪是一种相对计程仪,且为单轴计程仪,只能测量船舶相对水的纵向航速、航程,不利于大型船舶的操纵。
Electromagnetic Log is a relatively Log, and for single Log, the only measurement of the vertical ship relative speed of water, range, not conducive to the manipulation of large ships.
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