Originally Posted by jannw
I can guarantee you that eyeballing it as the hypotenuse of a right angled triangle doesn't work reliably or effectively ;-)
I can guarantee you that that hypotenuse is only 1% longer than the base of your triangle. A few inches for the OP.
You can mark the rode if you want. But an observant person, a sailor perhaps, can easily do without. The end of the chain is one big hint. Watching lengths run out is another. Looking at a nearby boat and the shore another. Counting windlass turns or counting seconds works too.
Is there a problem if the scope
is 6.9 or 7.1 instead of 7.0 ???