Many companies are putting conditions on policies that don't permit navigation in the Caribbean or south Florida during that high-risk period.

The remaining 29 dams beginning in downtown Minneapolis all contain locks and were constructed to permit commercial navigation of the upper river.

Enough exterior light leaked in to permit navigation.

But one in a scale of 1:24,000 - about one inch to a third of a mile - permits more precise navigation.

Among the the features were a "celestial time-zone clock permitting actual flight-type navigation."

The temporary bridge was fixed to the north bank and mounted to a pontoon on the south end to permit navigation of the channel.

A bridge within the causeway permits water flow and navigation between the two halves of Lake Lugano.

A new weir would raise water levels to permit navigation and an existing weir would be demolished.

A map of the city also permits point-and-click navigation.

Rebolledo selected Xcalak because two natural entrances through the barrier reef would permit navigation.