http://netvouz.com/winnipeg_oo7/tag/obstructions?feed=rss winnipeg_oo7's bookmarks tagged "obstructions" on Netvouz http://www.fedpubs.com/subject/boat/aids.htm Provided to help a mariner determine his position and course, to warn him of dangers or obstructions or to advise him of the location of the best or preferred route. exported winnipeg_oo7 Sat, 27 Jan 2007 05:13:36 GMT