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German submarines, or "U-boats", did not CONTROL the shipping lanes, but they were able to intercept and sink a large number of cargo vessels sailing between North America and Europe.
You may be talking about navigable waters, which are waterways that can be used as shipping lanes or for recreational vessels. You could be talking about potable water, which is water that is fit for human consumption.
Troop movement and trade were both accomplished by the roads and the shipping lanes. The good roads made moving legions to wherever they were needed quickly and the same went for the ships that could carry troops across bodies of water if necessary. The roads and shipping lanes were also used for trade and communication.
The US to Mexico shipping lanes cross much of the Gulf of Mexico. They begin at ports in Louisiana, Mississippi, and in Florida. The largest shipping lane exits the US from Miami.
i am sailing a small sail boat from the California coast to the Philippines, and would like to stay clear of the comm. shipping lanes to avoid a collision
Clearing the Atlantic shipping lanes from the threat of Nazi U-boats and raiders allowed the flow of supplies and personnel to England for the buildup in preparation for the invasion of Europe.
for control of shipping lanes.
There are multiple lanes offshore, the majority of the traffic stays 30+ miles offshore
vagina lubrication
Ice Breakers
cut off there shipping lanes
The water and weather conditions, and the amount of shipping in the area. Also, in inland waters, harbours, etc. speed limits may be in force. keeping to marked channels and buoyed shipping lanes may be compulsory.