Its really all going to depend on the clarity of the water. ive tried to take pictures of mine but none ever turn out good enough to see anything.
Im pretty sure those lights are the lumitec seablaze 3, and from the brief researching i did they seamed to be the best around -lighting and quality.
heres a link http://lumiteclighting.com/seablaze3.html
I have 2 of them on a 2002 Tige 20V, install was pretty simple and they perform very well. In somewhat murky water they still look really cool, pretty similar to the yacht but Id say my boat is a scaled down version of the picture you posted, in terms of light emission, hopefully that gives you a good idea.
they also make a dual color version of the seablaze 3, but i think the single white option is brighter than the 2 color option white, if that makes sense.