The PRTD data record defines the time duration and time step interval for outputting the hydrodynamic pressures/loads on elements. This data record is only valid in Aqwa-Naut analysis.

      2   5  7   11          21        31         41
    - --- -- ---- ---------- ---------- ----------
   |X|   |  |PRTD|          |          |          |
    - --- -- ---- ---------- ---------- ----------
       |  |   |       |                      |
       |  |   |       |                      |_(3) Output Load on Element Every Nth Timestep (I10)
       |  |   |       |          |
       |  |   |       |          |_(2) Finishing Time Step Number (I10)
       |  |   |       |
       |  |   |       |_(1) Starting Time Step Number (I10)
       |  |   |
       |  |   |_Compulsory Data Record Keyword (A4)
       |  |

(1) Default value is 1 if it is not defined or not positive.

(2) Default value is the number of the total time steps defined in Data Category 16: Time Integration Parameters – TINT.

(3) Default value is 1 if it is not defined or not positive.