Donalex..
The rule IS required lights "OR" shapes! It does NOT require both lights AND shapes. If they ARE showing the proper all rounds, side and stern lights shapes are NOT required. I worked as 1st mate on a very large sport fishing yacht fishing for blue fin tuna back in college. We spent LOTS of time trolling the banks, with the large commercial fishermen, and rarely if ever came across a commercial boat not displaying the proper lights. Perhaps things are different in New England than England..??
The rule IS required lights "OR" shapes! It does NOT require both lights AND shapes. If they ARE showing the proper all rounds, side and stern lights shapes are NOT required. I worked as 1st mate on a very large sport fishing yacht fishing for blue fin tuna back in college. We spent LOTS of time trolling the banks, with the large commercial fishermen, and rarely if ever came across a commercial boat not displaying the proper lights. Perhaps things are different in New England than England..??