When calculating the current hull drag on a structure, this data record defines a position on the structure at which the current is "measured".
2 5 7 11 16 21 26 31 41 51 61
- --- -- ---- ----- ----- ----- ----- --------- ---------
|X| | |DPOS| | | | | | |
- --- -- ---- ----- ----- ----- ----- --------- ---------
| | | |
| | | |_(1) Node number
| | |
| | |_ Data Record Keyword(A4)
| |
| |_Optional User Identifier (A2)
|
|_Compulsory END on last data record in Data Category (A3)(1) This is a node on the structure defined by the HLD* data category (Hull Drag Coefficients and Thruster Forces - HLD* (Data Category 10)). When calculating the hull drag force on the structure using coefficients defined on the CU** data records, the current at this point will be used.
Note:
The drag force is still applied at the center of gravity.
The node moves with the structure.
The current used is the total of uniform + profiled current.
If the node is zero or omitted, the current at the center of gravity of the structure will be used.
Both current profile and constant current extend above the water surface, so if the node is above the water surface there may still be a drag force. See the CPRF data record (CPRF Data Record - Profiled Current Velocity).
This data record does not apply to Morison-type hull drag using coefficients specified on the MDIN data record.