http://www.qsl.net/w4sat/horizon.htm

I think that you can take the antenna height of 1 meter but availability 
1/2 (when the small boat is in a trough its horizon is zero).

Peter
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist