Brendino,
I am afraid that Internation Shipping Laws require your ship to be outfitted with navigation lights. A red one, a green one, and a white one for starters anyway, you can think about adding on the extra red and white one indicating hazardous cargo later.
Just having a throw rope is not enough and is irresponsible. Be safe and observe international shipping laws. You do have your master mariner's ticket don't you?
Any canoeists on the river should bear in mind, that whilst Brendino is subject to the normal rules regarding right of way on the water, his turning circle will be several miles long and thus true observance of the rules may be impractical.