ANNEX – I : POSITIONING & TECHNICAL
DETAILS OF LIGHTS & SHAPES
Vertical Spacing Of Lights
V/l > 20m Masthead Lt not < 6m above hull
V/l > 20m Masthead Lt. not > 12m above hull
V/l breadth > 6m Masthead Lt. not < the breadth
V/l < 20m but > 12m Masthead Lt not < 2.5m above gunwale
V/l < 12m highest Lt < 2.5m above gunwale but not < 1m above Side Lts.
V/l > 50m Aft Masthead Lt not < 4.5m above for’d Masthead Lt
V/l > 20m Side Lts not > ¾ of the height of the for’d Masthead Lt.
V/l > 20m Other Lights except Towing Lt. not < 4m above hull
V/l > 20m Spacing between Lts not < 2m
V/l < 20m Spacing between Lts not < 1m
For’d anchor lt whhen 2 are carried, not < 6m above hull
Horizontal Spacing Of Lights
Dist. Between for’d & aft Masthead Lt not > 100m & not < ½ the L.O.A. of v/l
For’d Masthead Lt not > ¼ the length of v/l from stem
Other Lts not > 2m from fore & aft centreline in athwartship direction
Fishing v/l outlying gear indicating lt not < 2m but not > 6m from all round R/W lt.
Shapes
Ball dia not < 0.6m
Cone dia of base not < 0.6m
Cylinder dia not < 0.6m Height not < dia.
Diamond à Assume 2 cones with common base
Distance between shapes not < 1.5m
Vertical Sectors Of Lights
All v/l 100% intensity 5 deg. above & below horizontal
V/l except sailing v/l 60% intensity 7.5 deg. above & below horizontal
Sailing v/l 50% intensity 25 deg. above & below horizontal
Horizontal Sectors Of Lights
Side Lts from for’d 1 ~ 3 deg. outside prescribed limit
Side Lts; Stern Lt; Masthead Lt. 22.5 deg. abaft beam 5 deg. outside prescribed limit
Side lts; Stern lt; Masthead lt 100% intensity 5deg within prescribed limit
Side lts; Stern lt; Masthead lt 50% intensity upto prescribed limit & 5deg beyond prescribed limit
All round Lts sector of obstruction not > 6 deg.
