| my account | login-logout | resources | classroom help | tech support | catalog | home | get webcard |

Online Classroom


Post New Topic  New Poll  Post A Reply
search | help desk | commons
  next oldest topic   next newest topic
» Online Classroom   » Tech Support   » Inland & Coastal Navigation Course   » 6-8 and height of eye

   
Author Topic: 6-8 and height of eye
David Burch


 - posted March 28, 2011 05:11 PM      Profile for David Burch           Edit/Delete Post 
in this problem we estimate visible range in clear weather of an island 200 ft tall. Our answer given did not mention the height of eye of the observer and it should. Thus in principle with an eye height of 9 ft we would see it another 3 mile off or so... but remember these estimates are the limits, when the top is just over the horizon. At that point there is very little target to see so we need to keep that in mind when making these estimates.

see related discussion in the inland course for more details. thanks to Rich for pointing out this oversight.

From: Starpath, Seattle, WA


All times are Pacific  
Post New Topic  New Poll  Post A Reply Close Topic    Move Topic    Delete Topic next oldest topic   next newest topic
 - Printer-friendly view of this topic
Hop To:

Starpath School of Navigation

Copyright, 2003-2017, Starpath Corporation

Powered by Infopop Corporation
UBB.classicTM 6.3.1.1