Diving depth (shipping)
In the official navigation rules and notices for inland navigation, diving depth denotes the sum of the draft and sinking depth of a watercraft .
Inland shipping
- Draft is the distance between the lowest point of a ship at rest and the level of the water level;
- Sink depth ( sinking ) is the amount by which a ship sinks in relation to its rest position due to internal and / or external influences. (A ship underway usually dips deeper with its stern.)
The diving depth specified in the official notices (e.g. news for inland shipping , ELWIS ) is the maximum permissible level for the use of a waterway and depends heavily on the current level of the water or the fairway. Inland shipping must therefore plan the route and loading of the ship based on the specified diving depths. If the ship has too much loaded for a certain water level, it has to call at a port to lighten . At particularly low water levels, the diving depth is also checked by the water police.
Another common official depth specification is the unloading depth ; it describes "the draft of a ship at rest corresponding to a certain loading condition."
Submarine
- In the case of a submarine , the diving depth indicates the depth of the boat below sea level when underwater.