Final answer:
The Owner's manual or Manufacturer's website are the best sources for information on a boat's weight capacity, passenger limit, and motor size.
Step-by-step explanation:
You can find information about how much weight the boat can hold, how many people are allowed on board, and the maximum outboard motor size for the boat in the Owner's manual or on the Manufacturer's website. These sources typically provide comprehensive specifications for boat models, including safety and capacity information. The boat's capacity plate, which is physically attached to the vessel, is another crucial source that directly displays this information.