Capt. Mooron wrote:
"Jeff Morris" wrote in message
...

Capt. Mooron wrote:

I read it. It says that if I look/listen and see boats all around me
close
aboard then I need to maintain constant lookout. OTOH, if there is
nothing
between me an the 20-mile horizon I can sack out for an hour or so.
Right?

How do you get a "20 mile horizon"?


Climb the friggin' mast..... like I do!


I don't know about a friggin' mast, but for most masts, climbing to the
spreaders get you (maybe) 36 feet about the water, which gives you a 7
mile horizon.

Do you do better with your friggin' mast?


Jeez... you have a 6 mile horizon on an average deck .... at aprox 3 ft
above sea level....

Sorry Cap, from 4 feet above the water you have a horizon of about 2.4
miles. The formula is roughly the square root of the height in feet
times about 1.2 yields the horizon in nautical miles. Of course, if the
distant object is also 4 feet above the waterline, then you can see it
at 5 miles.


I get 49 ft on my friggin' mast!

That gives you less then 10 miles. Of course, it takes a while to get
back down (safely), so this is not a good way for a singlehander to get
a quick look around before going below.