Why don't they investigate LED lights, which have become ubiquitous in the past few years?   They are not only used in lighthouses, but also used on boats (including underwater) because they don't require a lot of power.   The problem is, they generate high-pitched noise/radio frequencies and sometimes dirty electricity (depending on how they are installed and whether they are grounded properly).  These things could disrupt whale sonar, and, from what I understand, right whales tend to swim close to the surface of the water and so may be more vulnerable than most.   In addition, they can cause problems to the central nervous system function if the immune system is at all weak.   (e.g., if myelin sheath is not strong, which protects the nerves).

The blue LEDs are particularly bad because they disrupt normal circadian rhythms and hormonal cycles, so would expect these to be the focus.