A global seabed with a constant slope can be optionally defined for composite cables, using a reference point and the angle and direction of maximum slope.
2 5 7 11 21 31 41 51 61 - --- -- ---- ---------- --------- --------- --------- --------- --- |X| | |SBED| | | | | | - --- -- ---- ---------- --------- --------- --------- --------- --- | | | | | | | | | | | | | | | |_(4) Seabed slope (degrees) (F10.0) | | | | | | | | | | | | | |_(3) Azimuth of seabed plane (degrees) (F10.0) | | | |-------------------- | | | | | | | |_(2) (X,Y,Z) Coordinates of sea bed reference point | | | | | |_(1)Compulsory Data Record Keyword (A4) | | | |_Optional User Identifier (A2) | |_Compulsory END on last data record in data category (A3)
(2) This is a point on the seabed. |
(3) This is the direction of greatest slope relative to the global X-axis, using the same convention as for wind and current direction. |
(4) Global seabed slope must be not less than zero and not greater than 30°. A positive slope is up in the direction given by (3). The local seabed slope definition for any structure-anchor composite cable using the COMP data record will be ignored if a SBED data record exists. |