This data record should be input after the tether has been fully described i.e. all the previous data records have been input.
For towed tethers this should be the *last* and *only* TETH data record in Data Category 14.
For installed tethers, where in general there is more than one tether, a complete tether description may be duplicated by inputting a TETH data record immediately following another. In this case, the previous tether will be duplicated at the positions specified by the structure/node numbers.
2 5 7 11 16 21 26
- --- -- ---- ----- ----- ----- -----
|X|XXX| |TETH| | | 0| |
- --- -- ---- ----- ----- ----- -----
| | | | | |
| | | | | |
| | | | | |_(4) Node 2 (I5)
| | | | |
| | | | |_(3) Fixed position specification (I5)
| | | |
| | | |_(2) Node 1 (I5)
| | |
| | |_(1) Structure Number (I5)
| |
| |_Compulsory Data Record Keyword (A4)
|
|_Optional User Identifier (A2)
(1) The number of the structure/vessel to which the tether is attached. This must correspond to one of the structures defined in Data Category 2. If '1' is input, this will correspond to the structure defined in Data Category 'ELM1'. If '2' is input, this will correspond to the structure defined in Data Category 'ELM2', etc. Structure number '0' (i.e. a fixed node) is an illegal structure (in this position) and will produce an error.
For towed tethers, the structure number must be 1.
(2) This is the node number of the attachment point at the vessel end of the tether line on the structure specified (1). The position of this node on the vessel must have been defined in Data Category 1.
(3)-(4) Specify structure number 0 (i.e. fixed in the FRA) and its corresponding node number (4) to define the anchor/trailing end of the tether. The position of this node (4) must have been defined in Data Category 1.