bow line
the bow line
the bow line
one short blast
yo want to cast off the stern... and then the bow
People do not move boats up a river against the current because the boat can easily capsize.
35 mph
35 mph
Since the distance downstream (with the current) equals the distance upstream (against the current), and if we: Let B stand for the speed (rate in mph) of the boat in still water, and using the formula rate X time = distance, the equation will be: (B+7) x 3 = (B-7) x 5 3B + 21 = 5B - 35 56 = 2B B = 28 mph Traveling downstream, the current will cause the boat to go faster so the 7 mph current is added to the boat's still water speed. Traveling upsteam the current slows or decreases the boat's rate so the current's speed is subtracted from the boat's still water speed.
Always begin your dive against the current, so if you are tired or running low on air at the end of your dive you can use the current to help you get back to the boat or entry point. Of course, from the shore, this is not always possible, so budget more air if you have to to be able to stay along the bottom on the way back and avoid swimming against the current when tired.
11 mph
stern line
Water is a cheaper means of travel than overland. Mules would pull the barges against the current.