When Operating a boat near another boat why should you watch your wake?

What is the plug gap for a 1975 50 horsepower evinrude outboard motor? What does the white marker with an orange diamond and black lettering mean? Which light should be shown on a power driven vessel at night? How old is a Tohatsu outboard motor serial number 97448? How did the submarines affect world war 2? How are periscopes used in real life? What is the weight of a 1990 Force 120 HP motor? What is the fuel to oil ratio in liters on two stroke outboards? What mega yacht is anchored off of Hilton head? Why do drivers of gondola boats wear stripes in Venice Italy? What agency is responsible for boat registration in Minnesota? How old must you be to rent a personal watercraft in Oregon? How does an engine propel a boat? What year is a Johnson outboard model number j175exarg? Who is considered a mandatory reporter? How many british submarines were lost in World War 2? What are boat hull fittings? Right or left side of a ship? What action should be taken when nearing a bend in a norrow channel? What does a seaplane look like?