Modern ships use the electromagneticLog have been less.
现代船舶上使用电磁计程仪的已较少。
2
With the electromagneticLog compared with high accuracy, to measure absolute speed, range, to measure the ship horizontal speed advantages.
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。
3
ElectromagneticLog 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.