On the Application of Nautical Chart Depth Data in Navigation Practice
Vessels shall maintain sufficient under-keel clearance to avoid grounding during navigation at sea.In practice,the navigation team usually converts the depth data read from the nautical chart into the actual depth or the depth under the keel and combines the depth data from the echo sounder to judge whether the depth of navigation waters is sufficient and safe.The accuracy of nautical chart depth data depends on the measurement and annotation of depth data.Reading and understanding the depth data on nautical chart correctly is a basic skill for vessel navigators.By analyzing the application of nautical chart depth data in navigation practice and the points for attention in the use of chart depth data,it aims to help vessel navigators correctly evaluate and reason-ably use chart depth data to ensure the safety of vessel navigation.
nautical chart depth datadepth annotationdepth data readingnavigation safety
万方数据
维普
