UKALNS

FEATURE OBJECT ATTRIBUTES

Attribute: Underkeel Allowance

Acronym: UKALNS Code:

Camel case: underkeelAllowance

Attribute type: Complex

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, information from real time sensors and weather forecast, the reliability of the chart and variance from predicted height of tide or water level.

Reference:

Decision SNPWG 13

Sub-attribute	Camel Code Identifier	Multiplicity	Sequential
UKAFIX	underkeelAllowanceFixed	0..1	n/a
UKAVAR	underkeelAllowanceVariable	0..1	n/a
OPERAT	operation	0..1	True

Remarks:

Under keel allowance is either a fixed allowance in feet or metres or a variable allowance calculated from a percentage of the vessel's draught or beam.

Distinction:

Nil

Justification:

New attribute

Comments:

No comments.

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David	Raphael	Jens
Y	Y	Y