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EA:  LIGHT_FUNCTION

Status: STD 2005/06/07
Code: 573
Concept definition: The function of a <LIGHT>.
 
Attribute value type: ENUMERATION
Reference type: IR
Reference: [FACC, Annex B: LFC]
Supplemental references:  
Enumerants (presented in a natural order)
Status Attribute label Enumerant label ▾ Concept definition Code Ref type Reference Supplemental references
STD
2005/06/07		 LIGHT_FUNCTION AEROLIGHT Established for aeronautical navigation and may be of higher power than marine <LIGHT>s and visible from well offshore; aerolight. 1 PR [S57A, Attribute, CATLIT:5]  
STD
2005/06/07		 LIGHT_FUNCTION AIR_OBSTRUCTION Marks an obstacle which constitutes a danger to air navigation; air obstruction. 2 PR [S57A, Attribute, CATLIT:6]  
STD
2005/06/07		 LIGHT_FUNCTION BEARING Enables its approximate bearing to be obtained without the use of a compass. 3 PR [S57A, Attribute, CATLIT:18]  
STD
2005/06/07		 LIGHT_FUNCTION DIRECTIONAL Illuminates a sector of very narrow angle and intended to mark a <DIRECTION> to follow; directional. 4 PR [S57A, Attribute, CATLIT:1]  
STD
2005/06/07		 LIGHT_FUNCTION EMERGENCY Available as a backup to a main <LIGHT> that will be illuminated should the main <LIGHT> fail; emergency. 5 PR [S57A, Attribute, CATLIT:17]  
STD
2005/06/07		 LIGHT_FUNCTION FLOOD A broad beam <LIGHT> used to illuminate a <STRUCTURE> or <TRACT>; flood. 6 IR [S57A, Attribute, CATLIT:8] [FACC, Annex B, LFC:8]
STD
2005/06/07		 LIGHT_FUNCTION FOG_DETECTOR Used to automatically determine conditions of visibility that warrant the turning on or off of a sound signal; fog detector. 7 PR [S57A, Attribute, CATLIT:7]  
STD
2005/06/07		 LIGHT_FUNCTION FRONT In a <NON_EMPTY_SET> of leading <LIGHT>s, describes the relative <LOCATION> of this <LIGHT> in the lead as being in front as viewed from seaward. 8 PR [S57A, Attribute, CATLIT:12]  
STD
2005/06/07		 LIGHT_FUNCTION FRONT_OR_LOWER <<<FRONT>>> and/or <<<LOWER>>>. 9 IR [FACC, Annex B, LFC:3]  
STD
2005/06/07		 LIGHT_FUNCTION LEADING Associated with other <LIGHT>s to form a <MARINE_LEADING_LIGHTS_LINE> to be followed. 10 IR [S57A, Attribute, CATLIT:4] [FACC, Annex B, LFC:4]
STD
2005/06/07		 LIGHT_FUNCTION LOWER In a <NON_EMPTY_SET> of leading <LIGHT>s, describes the relative <LOCATION> of the <LIGHT> in the lead as being lower as viewed from seaward. 11 PR [S57A, Attribute, CATLIT:15]  
STD
2005/06/07		 LIGHT_FUNCTION MIDDLE In a <NON_EMPTY_SET> of three or more leading <LIGHT>s, describes the relative <LOCATION> of the <LIGHT> in the lead as being in the middle as viewed from seaward. 12 IR [FACC, Annex B, LFC:15]  
STD
2005/06/07		 LIGHT_FUNCTION REAR In a <NON_EMPTY_SET> of leading <LIGHT>s, describes the relative <LOCATION> of the <LIGHT> in the lead as being in the rear as viewed from seaward. 13 PR [S57A, Attribute, CATLIT:13]  
STD
2005/06/07		 LIGHT_FUNCTION REAR_OR_UPPER <<<REAR>>> and/or <<<UPPER>>>. 14 IR [FACC, Annex B, LFC:2]  
STD
2005/06/07		 LIGHT_FUNCTION SPOTLIGHT Powerful and focused so as to illuminate a small <REGION>; spotlight. 15 IR [S57A, Attribute, CATLIT:11] [FACC, Annex B, LFC:11]
STD
2005/06/07		 LIGHT_FUNCTION STRIP Has a linear form, generally horizontal, that can reach a <<LENGTH>> of several metres; strip. 16 PR [S57A, Attribute, CATLIT:9]  
STD
2005/06/07		 LIGHT_FUNCTION SUBSIDIARY Placed on or near the support of a main <LIGHT> and having a special use in navigation; subsidiary. 17 PR [S57A, Attribute, CATLIT:10]  
STD
2005/06/07		 LIGHT_FUNCTION UPPER In a <NON_EMPTY_SET> of leading <LIGHT>s, describes the position of the <LIGHT> in the lead as being upper as viewed from seaward. 18 PR [S57A, Attribute, CATLIT:14]  
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