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Details
Item Type : Complex Attribute
Domain : IHO Hydro
AlphaCode : Unspecified
Complex AttributeName: Underkeel allowance
Alias : Unspecified
CamelCase : underkeelAllowance
Sub Attributes :
No Attribute Lower Upper Ordered
1 [Attr.] Underkeel allowance fixed 0 1 False
2 [Attr.] Underkeel allowance variable beam based 0 1 False
3 [Attr.] Underkeel allowance variable draught based 0 1 False
4 [Attr.] Operation 0 1 False

Definition : A fixed figure, or a figure derived by calculation, which is added to draught in order to maintain the minimum underkeel clearance taking into account the vessel's static and dynamic characteristics, sea state and weather forecast, the reliability of the chart and variance from predicted height of tide or water level.
Reference :
Definition Source : Unspecified
Similarity to Source : Unspecified
Int1 :
S4 :
Remarks : Unspecified
Management Details
Proposal Type : Addition
Submitting Organization : IHO (NIPWG)
Proposed Change : new attribute
Justification : to be used by S-127
Proposed : 2018-07-18
Accepted : 2018-07-19
Amended :
Successor : -
Predecessor : -


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