Dynamic wind heeling criteria

DELFTship forum Hydrostatics and stability Dynamic wind heeling criteria

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    • #34103

      Hoi Martijn,

      How can I implement the Dynamic wind heeling criteria?

      The angle Phi c due to the windmoment has to be maximum 40 degrees or the angle of flooding when this is less than 40 degrees.
      Whit a fixed roll back angle to minus 10 degrees.

      Groetjes Jenske

    • #34108

      Which wind criterion do you need?
      There are several wind criteria available in Delftship. The screenshow below shows how to limit the upper angle to the lesser of 40 degrees or the downflooding angle (red circle).

      The blue ellipse shows the settings for the rollback angle. There are several options:

      1. Use the rollback angle as defined by the IMO
      2. Use a fixed rollback angle. Starting from the intersection of the wind heeling lever with the stability curve the ship rollsback a specified amount of degrees.
      3. Specify a “Roll back to” angle. The ship rolls back to the specified angle. I assume you need this last option.

    • #34111

      Yes I already sorted it out I needed a fixed roll back angle to -10 degrees, whit the criteria that the reaction angle should be less than 40 degrees what I couldn’t find.
      But I can work with the A/B ratio that gives the same result.

      Gr Jenske

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