PI have a 12v (plug into the Consul) hand held Lumens waterproof search (Spot) light has helped me Big time in the past!.....Homeward passage Bristol Chanell in BIG Seas on a winter moonless night springs to mind
Its surprising how well white Crests are illuminated in the Dark!...which are otherwise invisible...a very confused steep Sea in 5m+ pluss RIB can be quite stressful in Total Darkness ....and certainly saved me a lot of potential trouble.
I also have an A-frame LED search light ( 1500+ lumens helm switch) I've used plenty of times to help set up my camping Tarp and sleeping stuff when I've camped on board ....also handy drooping people off on to the Beach or steps/Ladder at night.
Natural Light ....and more importantly planning is good!.....
Artificial light helps on unforeseen occasions when you may be caught out ...or you're timings are off.....and would surly be a boon in a rescue situation at night.
At least if you have them as Back up!...if the need arises you can use them!...if you don't YOU CANT!
I also have and carry a couple of water resistant re-chargeable QUALTY Flashlights (with spare Batteries) ...."Fenix" and "O-light" "Wolf eyes" ECT are unbelievably good these days!!...with small pocket models available with adjustable output levels peaking at of 600 Lumens or more!!
.....The Fenix models also comewith a Head Band which is often a great addition.
A well protected USB Chargeing point for Phone Torches IPad ect (mine is in a waterproof Glove Box in the Consul) is a really good idea