Re: Safe Boating,, how close is too close
I think Bondo has posted the most acurate answer to date. Keep in mind that each law will vary by state. I looked up the boating regs for NH and Mass (because that is what I happen to have in my office). These came directly from the rule book and copied verbatum.
NH:
"Unsafe passage is not maintaining a proper speed or distance while operating a vessel of while towing a person on water skis or any similar device. Specifically, the following operations are illegal:
Operating a vessel at greater than headway speed if within 150 ft. of:
swimmers in the water
other vessels
floats or rafts
permitted swimming areas
docks or mooring fields
the shoreline
Massachusetts:
Improper Speed or Distance is not maintaining a proper speed and/or distance while operating a vessel. Specificall, it is illegal to operate any vessel:
At a distance from other vessels or at a speed that exceeds safe and reasonable limits: given the waterway traffic; marked speed limits; visibility, wind, water, and current conditions; and the proximity of navigational hazzards.
At greater than 45 miles per hour on any inland waters of Massachusetts, except areas posted otherwise
At any speed within:
150 ft. of shorelines used as swimming areas
75 feet of floats or markers that designate swimming areas
At a rate of speed that creates a wake that causes damage, injury or excessive rocking to other vessels, rafts or floats.
"Headway Speed" is the minimum speed at which a vessel may be operated and maintain steering, but not to exceed 6 MPH.
At more than headway speeed if:
Within 150 - 300 feet of shorelines used as swimming areas
Within 150 of Marina's, ramps, rafts or floats
Within 150 ft. of swimmers
Vision is obscured by bridges, bends in the waterway, or by any other reason
Operating in a channel, unless channel markers state that higher speeds are allowed.
So, to address a couple of comments/questions. No, it does not seem to matter if the boat is smaller, in a channel, anchored, moored or drifting. You cannot be closer than the distance in the rule book at greater than headway speed. This applies to all bodies of water (fresh and salt). It doesn't matter if the shoreline is habited or not.
The best answer is to refer to the section of boating rule book for the state you're boating in called "Unlawful Operation".