Originally Posted by Larry M
I don't know about Ranger tugs but I would think most boat manufacturers of vessels less than 20 meters, meet the requirements of NAVRULES Annex 1 or Title 33 84.09 Screens with out having to go to mat black or we would have mat black.
...On vessels of less than 20 meters in length, the sidelights,if necessary to meet the requirementsof §84.17, shall be fitted with mat black inboard screens.
True...in wording only...
The average nav light barely meets the sector requirement (and it only meets it by where the filament is placed...not where the brightly lit lens can be seen from)...and the rules also require that if you do something in the rules, though not specifically required by the rules, every attempt shall be made to conform to the rules.
The Hella 2984 series we have on our assistance towboats illuminate the colored lenses so brightly...you can see them from asterm a long ways (maybe up to a mile on a clear dark night. They are so bad my boss had me make light boards to eliminate the lighting shining aft so we couldn't be found at fault in legal issue.
The red/green screens are showy marketing bling...they are NOT EVEN CLOSE to the spirit of the nav rules because the light reflected on them only magnifies any sector discrepancies.