Brian:

You are right, I don't know why I bother!

Eric

Brian Whatcott wrote in message . ..
On 31 Jan 2004 08:51:40 -0800, (Eric) wrote:
Don't expect to recognize a towering cu-nim anvil at 300 nm from a low
blip on the horizon on a crystal clear day,
In fact try not to argue with fools, as a general rule.

Brian Whatcott

Your trig may be correct as far as the altitude is concerned but
practically speaking, you can rarely see anything 300 nm away.

I would agree they don't tend to come up on you in 10 minutes but it
may take a lot longer than 10 minutes to get to a safe
harbor/dock/anchorage.

Eric