https://youtu.be/6YmnkoMBfFQ https://youtu.be/z2mtGFXi-F0 This video serves only as a guide or reference for determining and setting safety parameters. It shows a complete guide on how to determine shallow contours, safety contours, safety depth, and deep contours. It explains the difference between safety contour and safety depth. Always follow the company procedures on how to determine those safety parameters. In Electronic Navigational Charts (ENCs), contours represent lines connecting points of equal depth or height in the water or on the sea floor. These contours provide a visual representation of the underwater terrain, helping mariners to understand the shape and characteristics of the seabed. #seamanship #maritime #seafarer #seaman #bsmt #maritimestudents #ecdis