Boat capacity is misleading. A Jon boat has a rating that will float it, a motor, and X amount of weight, full of water. A canoe has a rating of how many pounds of anything will sink it to the half way mark.
Basically what its saying is that if you fill your boat up with water, it will sink, unless you get out of it.
I said Halogens, should have said Mercury vapors or Sodiums.