Mr. Kays,
Owner may in fact own the land under the water, but it sounds like city ordinances don't allow docks over 30 feet. If this is the case, then if owner were to build a 47 ft dock it would be illegal (a code violation). The exact location of the channel and whether the state of FL has reserved any rights to channel as a "navigable water" could also be relevant.
Answered on Apr 08th, 2013 at 5:07 PM