2.3 Effects
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - International Codes - DSC Code - Code of Safety for Dynamically Supported Craft – Resolution A.373(X) - Annex II - Use of Probability Concept - 2. Terms Associated with Probabilities - 2.3 Effects

2.3 Effects

 An effect is a situation arising as a result of an occurrence.

  2.3.1 Minor Effect An effect which may arise from a failure, an event, or an error (as defined in 2.1.1 , 2.1.2, 2.1.3 of this Annex) which can be readily compensated for by the operating crew; it may involve:

  • (a) a small increase in the operational duties of the crew or in their difficulty in performing their duties; or

  • (b) a moderate degradation in handling characteristics; or

  • (c) slight modification of the permissible operating conditions.

  2.3.2 Major Effect An effect which produces:

  • (a) a significant increase in the operational duties of the crew or in their difficulty in performing their duties which by itself should not be outside the capability of a competent crew provided that another major effect does not occur at the same time; or

  • (b) significant degradation in handling characteristics; or

  • (c) significant modification of the permissible operating conditions, but will not remove the capability to complete a safe journey without demanding more than normal skill on the part of the operating crew.

  2.3.3 Hazardous Effect An effect which produces:

  • (a) a dangerous increase in the operational duties of the crew or in their difficulty in performing their duties of such magnitude that they cannot reasonably be expected to cope with them and will probably require outside assistance; or

  • (b) dangerous degradation of handling characteristics; or

  • (c) dangerous degradation of the strength of the craft; or

  • (d) marginal conditions for, or injury to, occupants; or

  • (e) an essential need for outside rescue operations.

  2.3.4 Catastrophic Effect An effect which results in the loss of the craft and/or in fatalities.


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