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Canadian maritime law requires 15 meters minimum for a buoyant device heaving line. The U.S. Coast Guard does not specify a need for a heaving line. The UK Broads Authority does not specify a length for heaving lines. U.S. Coast Guard approved heaving lines come in lengths of 70 ft. and 100 ft. with an attached soft ball weight.
It means trailing a device attached to a line that measures the ship's speed. :)
There is no reason that the length of a line segment can't be measured.There is no reason that the length of a line segment can't be measured.There is no reason that the length of a line segment can't be measured.There is no reason that the length of a line segment can't be measured.
One characteristic of a line is that the length continues on forever.You can only find the length of a line segment.
Select any point in the plane as the origin. From the origin, draw a line of unit length. At its end draw a perpendicular line, also of unit length. This is the first line of the spiral. Join the end of this second line to the origin - this will be a line of length sqrt(2). At the end of this line draw a perpendicular line of unit length. This is the second line of the spiral. Join the end of this new line to the origin - this will be a line of length sqrt(3). At the end of this line draw a perpendicular line of unit length. This is the next line of the spiral. Continue until you have had enough! Or, follow the link.